5^th World Congress on Materials Science & Engineering June 13-15, 2016 Alicante, Spain

Piedad N de Aza studied Chemistry at the Autonoma University of Madrid and Ceramic at the Santiago de Compostela University where she received her doctoral degree in 1995. She did a postdoctoral stage at the IRC in Biomaterials at the Queen Mary & Wetsfield College, University of London (U.K.) working on in vitro and in vivo behavior of bioceramics. At this moment, she is the Chair of the Materials Science, Optic and Electronic Technology Department, Professor of Materials Science and Metallurgical Engineering and Researcher at the Bioengineering Institute at the Miguel Hernandez de Elche University.

The subsystem Nurse´s A-phase- silcocarnotite within the system Ca3(PO4)2–Ca2SiO4 was conducted as a preliminary step toward obtaining new biomaterials with controlled microstructures. The subsystem have been investigated, via annealing and quenching in the experimental method, direct observation of the phase composition of the resulting ceramics was studied by X-ray diffraction, differential thermal analysis and scanning electron microscopy with attached wavelength dispersive spectroscopy. The results showed that the sub-system presents an invariant eutectoid point at 1366 ±4°C with a composition of 59.5 wt% Ca3(PO4)2 and 40.5 wt% Ca2SiO4. These results are in disagreement with the previous reported data, which locate the invariant point at 1250±20ºC and a composition of 55 wt% Ca3(PO4)2 and 45wt% Ca2SiO4. In addition, cell attachment test showed that the new eutectoid material supported the mesenchymal stem cells adhesion and spreading, and the cells stablished close contact with the ceramic after 28 days of culture. These findings indicate that the new ceramic material with eutectoid microstructure of lamellae morphology possesses good bioactivity and biocompatibility and might be a promising bone implant material.

DDs. Granada University, Spain 1996 (Odontology),PhD. Murcia University, Spain 2009 (Implant Dentistry), MSc. Murcia University, Spain 2009 (Implantology and Biomaterials), MSc. Granada University, Spain 2011 (Animal Care and Research in Biomedical Sciences), MSc. Murcia University, Spain 2013 (Advanced Implantology), Research Assistant. International Cathedra of Research Implantology and Biomaterials. UCAM. San Antonio Catholic University of Murcia. More than 40 papers published in journals with JCR. Actually I´m doing my second Ph.D in (Biomaterials) in the Miguel Hernández University, Elche, Spain. 2008-First Prize, II International Congress of Bone Regeneration, Madrid, Spain. 2009-First Prize, III International Congress of Bone Regeneration, Madrid, Spain. 2010-First Prize, III National Meeting, Spanish Society of Oral Surgery. Zaragoza, Spain 2011-Special Award Doctorate in Dentistry from the University of Murcia. 2011-First Prize, Spanish Society of Oral Surgery (SECIB), Zaragoza, Spain. 2011-First Prize, IX National Meeting, Spanish Society of Oral surgery.

Some studies have demonstrated that osteointegration and degradation processes are influenced by physical and chemical properties of the material.The present study compares two hidroxyapatites (HAs) and how the physico-chemical properties like chemical composition and particle morphology influence the material performance in vivo. The biological behavior of both (HAs) was evaluated with a histomorphometric study of the newly forming bone and mineral degradation, in retrieved bone biopsies following maxillary sinus augmentation, in 10 clinical cases. The HAs were characterized thorough powder X-ray diffraction XDR analyses, gas pycnometry and scanning electron microscopy SEM. Quantitative analyses were made by an Electronic Dispersive X-ray Spectroscopy (EDX) system. Ten patients were selected who required bilateral sinus augmentation. Following elevation of the lateral sinus walls, one material was placed in the right sinus and the other in the left sinus, as determined by randomized choice. Nine months after sinus lifting, a trephine bone core was harvested from the previously elevated maxillary sinus and sent for histomorphometric analysis. The specimens were processed for observation under a scanning electron microscope with backscattered electron imaging (SEM-BSE). The X-ray diffraction showed that both HAs were composed of single phase HA. Both HAs are porous and exhibit intraparticle pores (35-60%) around 0,03 μm. The particles size range varied (250-1000μm). Strong differences were observed in term of crystallinity the HA (B) granules exhibit low crystallinity, crystal size is 732 nm, while (HA) A structure consisted of a highly crystallinity and the crystal size is 325nm. Scanning electron microscopy revealed that newly formed bone had become closely attached to both HAs. Histomorphometric measurements on the bone biopsies showed that for the HA (B), the newly formed bone represented (23.5±2.4%), residual graft material (25.1±2.3%) and for connective tissue (51.4±3.4%), while for the HA (A) newly formed bone (28.5±2.4%), residual graft material (31.3±2.3%) and non-mineralized connective tissue (40.2±3.4%). The HAs assessed in the study were shown to be biocompatible and osteoconductive when used for maxillary sinus elevation. The HA (A) was not complete resorbable material over the time period covered by this study. Despite the similar characteristics of the two HAs the differences found in terms of crystallinity may determine different behavior of this material. Detailed information about graft material characteristic is crucial to evaluate their clinical outcomes.

Camurlu received her B.Sc. (1999), M.Sc (2001) and Ph.D. (2006) degrees from Department of Chemistry at Middle East Technical University in Ankara, Turkey. Dr. Camurlu has been working as an associated professor in Department of Chemistry at Akdeniz University (Antalya, Turkey) since 2010. Her research is focused on the design and synthesis of functional conjugated polymers and their applications such as; electrochromic devices, light emitting diodes, biosensors and chemisensors. She has published more than 45 papers in SCI journals and took part as a co-author for three international scientific book chapters.

Herein we disclose synthesis of a azide containing, soluable 2,5-dithienylpyrrole (SNS) based polymer and provide a pioneer study which demonstrates capability and versatility of click chemistry in efficient functionalization of the polymer. For this purpose, Chem-PSNS-N3 was synthesized via chemical polymerization of 1-(2-azido-ethyl)-2,5-dithiophene-2-yl-1H-pyrrole (SNS-N3) in the presence of FeCl3. The resultant polymer was shown to be electroactive which could also be chemically doped via addition of SbCl5. A versatile synthetic protocol for the post-functionalization of Chem-PSNS-N3 with two different terminal alkynes was developed. The alkynes having ferrocene and fluorescein functionalities were deliberately chosen in order to manipulate the redox, optoelectronic, florescence and doping properties of poly(2,5-dithienylpyrrole)s. We are grateful to TUBITAK (Project No: 110T640) for the support of this

H. Erdem Çamurlu has completed his PhD in 2006 from Middle East Technical University, Ankara, Turkey. Currently, he is an Associate Professor in the Mechanical Engineering Department of Akdeniz University, Antalya, Turkey. He has published more than 35 papers in reputed journals.

Glass coatings, which were composed of SiO2-K2O-Li2O were obtained through sol gel technique, starting from TEOS, MTEOS, LiOH and KOH. Hexagonal boron nitride (hBN) nanoparticles (average diameter 70 nm) were added into glass coating solutions by mixing at 2000 rpm with zirconia beads. Coatings were formed on steel plates by spin-coating at 500-1000 rpm. Curing of the coatings was conducted at 500 oC, 400 oC and 300 oC in air. Coatings were examined by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) and thermo-gravimetric analysis (TGA). Adhesion tests were performed by using a multi-cross cutter. Thicknesses and Newton hardness values of the coatings were determined and friction coefficients were measured by an oscillating tribometer. Water contact angles were measured with a goniometer. Thicknesses of the coatings were in 0.6 µm-2.9 µm range. Friction coefficients were seen to increase with decreasing curing temperature. Water contact angle increased abruptly from 9o to 50o, when curing temperature was decreased from 500 oC to 400 oC. This was attributed to the presence of hydrophobic groups on the surface of the coatings, which was revealed by FTIR analyses, when curing was performed at 400 oC or 300 oC.

Nanostructured materials have gained great importance into nowadays society due to the advantages offered in a variety of fields of application: biomedical, sensors, .... In particular, organic materials, since they present great advantages over their inorganic equivalents, such as: low cost, easy chemical modification and biocompatibility. Polymers and, especially conductive polymers, are very interesting structured materials. In this sense, there are several methods for preparing conductive polymers with a specific architecture. They can be organized into two groups: lithography (optical and electron beam), hard and soft template. All they aim to obtain structured polymers in the three dimensions: 0D, 1D, 2D and 3D. The hard template procedure is a versatile process to obtain structured polymers, because it employs a rigid substrate. Anodized alumina membranes are one of the most interesting templates because different porous morphologies can be obtained by selecting the appropriate anodizing conditions. In the case of 3D templates, pulsed anodizing is used. This process generates 3D networks of porous over a large area. The 3D template is used as a template for the PEDOT synthesis. PEDOT (poly (3, 4-ethylenedioxythiophene) has been synthetized by electrochemical polymerization and subsequently the organic network has been released by removing the template. The ordered 3D interconnected PEDOT nanowires can play an important role in the development of: transistors, OLEDS, solar cells, thermoelectric modules and supercapacitors. For that reason their properties and characteristics: morphology, electron properties and Seebeck coefficient have been studies. To conclude, employing anodic alumina oxide templates to obtain nanowires of conductive polymers by electropolymerization is a feasible route for prepare 3D nanostructures.

Antonio García-Barberá obtained a degree in Chemical from the University of Valencia in 2014 and in 2016, he obtained a Master in Molecular Nanoscience and Nanotechnology.

The assembly of metal surfaces, minerals, hydrogels, and biological systems can be significantly influenced by the presence of metal and nonmetal ions. Parameters for monovalent and divalent ions in molecular simulations have remained somewhat poorly rationalized and incomplete to date. We will discuss the development and validation of force field parameters for common mono- and di-valent cations (Li+, Na+, K+, Rb+, Cs+, Be2+, Mg2+, Ca2+, Sr2+, Ba2+, Zn2+) as well as anions (F-, Cl-, Br-, and I-). The parameters reproduce experimental hydration energies, coordination numbers of water, and are consistent with trends in crystallographic size as well as approximate polarizability across the periodic table. They are compatible with the INTERAFCE force field, CHARMM, PCFF, and CVFF, including common water models such as SPC and TIP3P. Further validation also includes the densities of solid salts and their cleavage energies, providing consistent insight into solids and solid-liquid interfaces during dissolution and crystallization. The parameters can be used to explore morphologies and thermodynamic stability of inorganic and organic nanostructures.

Ivan Plaza is a Geologist by University of Granada (2003-2008), where he also completed his academic formation with Post-degree in Geological Engineering in Civil Engineering (2009-2010). Currently, he is doing his PhD in University of Jaen (student) where his research is about surface properties of materials (Graphene, Soils and Volcanic ash) in Physics Department. He has several publications on this subject in important journal as Geoderma, Soil and Tillage, Catena and Dyes and Pigments.

Research on graphene has captured the attention of different fields in science and industry. The properties of this material, high flexibility, thermal and chemical stability, and high thermal and electrical conductivity permit a great variety of applications. The adsorption of conductive substances onto both natural (cotton) and artificial (polyester, Lycra) textile materials appears promising for use in industrial applications because several important characteristics are produced, namely, conductivity, elasticity, lightness and flexibility. The importance of polyester fibers to the textile industry, researchers are very interested in improving their properties. Because polyester fibers normally contain no reactive chemical groups, they are not easily penetrated by dyes, and even dyeing polyester with disperse dyes is very difficult. Many phenomena that occur at solid liquid interfaces, such as wettability, particle aggregation, flotation, and dyeing, depend to a large extent on the type and magnitude of the surface and the interfacial free energy involved. In this work, we examine the adsorption properties of graphene onto synthetic polyester (PET) fibers. These adsorption processes depend on the surface properties of both materials. Determination of the surface free energy, together with studies of the zeta potential, assists in understanding the physical-chemical mechanisms that govern the interactions between textile fibers and particles or surfactants. We then describe an experimental investigation of the adsorption process of GO onto PET and how the process is improved when the PET is pretreated with surfactants substances.

M A López is studying dentistry in Granada in his final year of degree. He also worked few days per week in a dental clinic like as an Assistant. He also visits laboratory in the Physics Department to investigate new properties of the Chlorhexidine since he is interested in a PhD research work in collaboration with this department.

Results of dynamic and equilibrium of sorption of a reactive dye Remazol Brilliant Blue, and a bactericidal agent, Digluconate of Chlorhexidine over Polyamide fibers are presented with the aim of supplying the fiber with bactericidal properties, However, adsorption of Chlorhexidine onto Polyamide is scarce due to the lack of interactions between the reactive groups of the fiber and the antiseptic molecule, Therefore, in order to provide the fiber surface with anionic groups, fiber has been previously dyed with Remazol Brilliant Blue which increases the negative charge of the fiber surface due to the presence of its sulfonate end groups. Thermodynamic parameters of equilibrium sorption in the two situations, fiber/dye and fiber-dye/Chlorhexidine, has been analyzed, as function of the temperature, pH and concentration of the dye in the pretreatment. Results show that when sorption of RBBR reaches the value of about 50 mmol/kg at higher temperature and concentration tested the amount of CHX adsorbed onto fiber/RBBR system is 6 mmol/kg. Both processes, adsorption of RBBR and adsorption of CHX, fit well to Langmuir adsorption model, suggesting the existence of some kinds of specific interactions between adsorbent-adsorbate. Thermodynamic functions show that the interaction is endothermic and spontaneous in all the rage of temperature tested. The kinetic studies show that sorption of RBBR are better described by pseudo-first order model even the fit of second order exhibits high correlation coefficient, because of the coincidence between theoretical and experimental values of amount of dye adsorbed at equilibrium. Sorption of CHX fits better to pseudo second order model, being this last one quicker that RBBR process, and diffusion coefficient is also higher in this last situation. According to the obtained results chemical interaction between vinyl-sulphone group of RBBR and the amine groups of Polyamide fiber, followed by electrostatic interactions between the guanine group of the Chlorhexidine and the sulfonate groups of the dye could explain the adsorption process.

Deok-Won Lee is currently working as an Associate Professor in the Department of Oral and Maxillofacial Surgery at Kyung Hee University Dental Hospital at Gangdong (Kyung Hee Neo Medical Center).

A buccal delivery system provides a much milder environment for drug delivery compared to an oral delivery which presents a hostile environment for drugs, especially proteins and polypeptides, owing to acid hydrolysis. Local delivery in an oral cavity has particular applications in the treatment of toothaches, periodontal disease, and bacterial infections. Poly(acrylic acid) (PAA)-based hydrogels prepared using a chemical initiator have been attempted for a mucoadhesive system owing to their flexibility and excellent bioadhesion. In this experiment, PAA and polyethylene glycol (PEG) were selected to prepare using a radiation process a bioadhesive hydrogel for adhesion to mucosal surfaces. PAA and PEG were dissolved in purified water to prepare a homogeneous PAA/PEG solution, and the solution was then irradiated using an electron beam at dose up to 70 kGy to make the hydrogels. Their physical properties, such as gel percent, swelling percent, and adhesive strength to mucosal surfaces, were investigated. In this experiment, various amounts of PEG were incorporated into the PAA to enhance the mucoadhesive property of the hydrogels. The effect of the molecular weight of PEG on the mucoadhesion was also examined.

Aleksey Vasiliev has completed his PhD from the Institute of Bioorganic Chemistry & Petrochemistry in Ukraine. His main field of expertise is materials chemistry, in particular, chemistry of mesoporous and microporous materials. He continued his professional career in the National Technological University in Argentina, and further moved to Rutgers University. Currently, he is working as an Associate Professor in East Tennessee State University.

The objective of this work is the synthesis of a novel superacidic mesoporous adsorbent for immobilization of radioactive caesium-137 in contaminated waters and soils. The project is based on the hypothesis that heteropolyacid-containing porous materials can selectively adsorb caesium due to the presence of highly acidic adsorption sites in their structure. Silica gel containing embedded phosphotungstic acid was synthesized by co-condensation with tetraethoxysilane in acidic media using the sol-gel technique. Pluronic 123 was added as a pore-forming agent. Content of tungsten in the obtained sample was 7.7%. The material was mesoporous with BET surface area above 1000 m2/g, however, it also contained micropores. Presence of bands of Keggin’s structure in the FT-IR spectra at absence of XRD patterns of crystalline HPAs confirmed their fine incorporation into silica network. SAXS study and TEM imaging showed highly agglomerated particles with disordered porous structure at the average pore size of 16 nm. This material was studied in the adsorption of caesium ions from aqueous solutions. Isotherms of caesium adsorption were obtained at various temperatures. These data demonstrated a possibility to use the adsorbent in different climatic conditions. The selectivity of the adsorbent was studied at the competitive adsorption of caesium in the presence of potassium ions. High effectiveness of this material makes it potentially applicable for cleanup of contaminated areas after a nuclear incident.

Joel Diaz-Reyes obtained his PhD at the Center for Research and Advanced Studies of the National Polytechnic Institute, sited at Mexico City, and postdoctoral studies from Polytechnic University of Madrid, Spain. He is a researcher at the Center for Applied Research in Biotechnology of the National Polytechnic Institute, sited at Tepetitla, Tlaxcala, Mexico. He has published more than 65 papers in reputed journals.

Controlled synthesis of nanoparticles of InP/ZnS type with core/shell structure is reported using the colloid chemistry method called "one-step injection precursors without hot" at different temperatures. Varying the conditions of reaction temperature (100-320°C), it was possible to control the formation of the shell and average particle sizes (2-10 nm). Color changes were clearly observed in the colloidal dispersions according to the reaction temperature. The obtained semiconductor nanoparticles presented crystalline structure core/shell, uniformity in size and exhibit a dependence of emission in the range of 450-650 nm. The formation, size, structure, composition and optical properties of the samples were characterized using techniques transmittance, HRTEM, XRD, EDS. UV-Vis spectroscopy and room-temperature photoluminescence.

Lyutakov Oleksiy is a researcher at the University of Chemistry and Technology Prague from 2009 – present. He has done his PhD from Institute of Chemical Technology, Chemical Engineering, Prague, Czech Republic during the year 2005 – 2009.

Surface-modified gold multibranched nanoparticles were prepared by chemical reduction of gold chloride aqueous solution followed by in vivo modification using water soluble arenediazonium tosylates. Results of NPs synthesis and their functionalization were checked using the TEM, SEM-EDX, SERS and UV-Vis spectroscopy techniques. The antibacterial effect of the surface-modified AuMs was evaluated using Escherichia coli and Staphylococcus epidermidis bacteria under the IR light illumination and without the external triggering. Prepared NPs exhibited law antibacterial activity, which was significantly increased by the grafting of carboxyl and amino functional groups on their surface. Moreover, light triggering of these functional NPs further increase their efficiency in the killing of bacteria. This significant increase of NPs bioactivity was achieved under the illumination with “tissue-favorable” IR wavelength and very mild illumination conditions. It is proposed, that strong plasmon resonance, occurred on the AuMs cups allows to significantly reducing the light power and achieves apparent bacteria killing under mild conditions of continuous illumination. This type of NPs with a wide range of attached functional groups has huge potential for application in antibacterial treatment and cancer therapy.

Elashnikov Roman is currently a PhD student at the University of Chemistry and Technology, Prague, Czech Republic, from 2014 – present. He did his Master's degree in Nanomaterials, from University of Chemistry and Technology, Prague, Czech Republic in the year 2012-2014. He did his Master's degree in Polymer Science and Engineering, from Belarusian State Technological University, Minsk, Republic of Belarus, in the year 2010 – 2011. He did his Bachelor degree in Polymer Science and Engineering, from Belarusian State Technological University, Minsk, Republic of Belarus in the year 2005 – 2010. He has published 5 papers in reputed journals.

The creation of an antibacterial material with triggerable properties enables us to prevent the emergence of resistant bacterial strains. As a potential light-activated antibacterial material, polymethylmethacrylate (PMMA) nanofibers doped with silver nanoparticles (AgNPs) and meso-tetraphenylporphyrin (TPP) were prepared by electrospinning. Upon light irradiation at the wavelength corresponding to the TPP absorption peak two processes take place: the creation of reactive oxygen species and the enhanced elimination of AgNPs from polymer matrix. Furthermore, under prolonged light irradiation the AgNPs/ TPP/PMMA nanofibers displayed enhanced longevity and photothermal stability. Depending on the light source and its power the light irradiation leads to the migration of the AgNPs to the surface and their release from nanofibers or to growth of AgNPs aggregates on the nanofibers boundaries. Antibacterial tests on Staphylococcus epidermidis and Enterococcus faecalis showed the excellent light-triggerable antibacterial activity of the doped materials. The observed effect of light-induced AgNPs release and the increased TPP stability, open the way for design of new generation of antibacterial materials with combined antibacterial activity.

Guselnikova Olga has completed her Bachelor and Master degress in Tomsk Polytechnic University, Russia and now she is PhD Student in University of Chemistry and Technology, Prague. She has published 4 papers in reputed journals.

Plasmon-active noble metals nanostructures based on Ag, Au thin films become widely applied in the field of plasmonics and related sensing technologies. Moreover, surface modification by the attachment of organic groups to plasmonic surafces is a subject of current interest in material science and sensor design.We proposed a method for development of new SERS based sensor systems for the heavy metal ions and organic contaminants detection. Proposed systems consist of plasmon-active periodical metal surfaces decorated with immobilized organic chelator or thermo-regulated polymer. Firstly, we developed a method for covalent modification of Au plasmonic thin films via interaction with arenediazonium tosylates. Further, grafting of 4-carboxypheyl and 4-aminophenyl groups enabled to create a strong covalent linker between the surface and active functional grops. Thermo-regulated polymer (PNIPAAM) and chelator molecule DTPA were grafted to the plasmonic films via interaction with active amino and carboxyl on the surafec. The molecular recognition of contaminants resulted in the shift of SERS peaks position or arising of the new peaks in the latter case. As model solutions we used solutions of heavy metal ions (Pb2+, Cu2+, Cd2+) for capturing by chelator and solutions of azo-dyes (crystal violet, metanil yellow, disperse red I) for thermos-regulating capturing by PNIPAM.

Kalachyova Yevgeniya is a PhD student at the University of Chemistry and Technology, Chemical Engineering, Prague, Czech Republic, on the topic, “Preparation of polymer optical metamaterials” from 2012 – present. She did her Internship at University of Memphis, Department of Chemistry Tennesse, USA, from May - June 2011. She did her Master's degree in Natural Science, Scientific & Pedagogical direction, at Al-Farabi Kazakh National University, Almaty, Kazakhstan, GPA: 3.96/4.00 in the year 2009 – 2011. She is did her Bachelor degree in chemistry, with honours Al-Farabi Kazakh National University, Almaty, Kazakhstan, in the year 2005 – 2009. She has published more than 10 papers in reputed journals.

The systematic research of structures with gold and silver nanoparticles (MeNPs) of various shapes and dielectric functions immobilized onto the silver grating is performed. These structures may serve as double resonance SERS (Surface-enhanced Raman spectroscopy) substrates with coupling between surface plasmon polariton (SPP) supported by the silver grating and localized surface plasmons (LSPs) excited on the grafted metal nanoparticles (MeNPs). The silver grating supports SPP excitation under the 785 nm wavelength illumination. Spherical silver and gold nanoparticles, triangular silver nanoprisms and gold nanorods are prepared and used with the aim to gradually cover the LSP excitation in the 400-800 nm wavelength range. MeNPs are grafted through the 4,4'-biphenyldithiol (BFDT) linkers. Rhodamine 6G (R6G) molecules are added onto SERS substrates and located above and between the MeNPs. Our experimental and theoretical results exhibit that the enhancement can be explained by multiple couplings between the MeNPs, as well as between the Ag film and MeNPs. LSP-SPP interplay leads to the plasmon focusation in the different volumes (between MeNPs or between the MeNPs and silver grating). Several wavelengths (470, 532, and 785 nm) are applied to probe the SERS response. Depending on the nanoparticles type and excitation wavelength a significant SERS signal is produced by R6G or BFDT molecules.

Kristina Bastekova has been a postgradual student in the UTC, department of material engineering since 2015 focusing to the biomedical section to prepare the surface polymer scaffolds integrated in biomedical devices focusing to the medical section of the tissue engineering. At the present she is preparing papers for publishing in journals.

This year, for the first time, we will introduced in this conference our topic and highlights from our research developing the present biomedical area focusing on the modification of bioresorbable polymers. At present, there exists a plenty of scientific groups researching the improvement of essential characteristics of biomaterials applying in tissue engineering. Modern trends are requesting the universality of implanted materials implanting in the body environment in different conditions of the tissues. Therefore, our research is focusing to the tuning the surface parameters of current polymer biomaterials in desired properties, primary forming the surface wettability to mediate appropriate degradation rate. Within the surface modification of bioresorbable polymer is the main question to forming the hydrophobic/hydrophilic surfaces (repellent and adhesive surface properties, as well as nanomechanical and biodegradation characteristics). Modification processes were included two independent approaches - firstly, activation of the polymer surface by only plasma treatment, following by the chemical activation by grafting with diazonium salts. Moreover, it was demonstrated that the described technique can be used for the spatially selective modification of biopolymer, i.e. achieving of quite different properties on the two opposite sides of polymer films. The technique allows one to vary of the polymer surface properties in the wide range. So that it would be important for biopolymer use in medical applications where spatial tuning of surface properties such as biorepellent or bioadhesive ones, polymer degradation rate or mechanical characteristic are highly required.

Wowro Sonia Rosine Lago is currently working as a researcher at Univ Paris-Sud, France.

This study is an overall view of the study of aging the Ethylene Norbornene Copolymers (ENC) induced by ionizing radiation and photodegradation, that mimicking sterilization and storage ageing of medical devices. It is therefore, performed on different ENCs of different norbornene rates. These copolymers have interesting physicochemical properties for pharmaceutical and medical applications, due to their transparency similar to glass, good chemical resistance and low permeability to gas and water. The results presented here put in evidence the modifications of the physicochemical properties of the aged ENCs, using experimental techniques such as FTIR (Fourier Transformed Infrared spectroscopy), DSC (Differential Scanning Calorimetry), ATG (Thermogravimetry analysis) and SEC (Steric Exclusion Chromatography). ENCs stability is influenced by several parameters including the rate of norbornene present in the structure. Nevertheless, the effect of treatment (ionizing radiation or photooxidation), has a real impact on the oxidation induction time of ENCs. It is also highlighted in this study, the presence of oxidations compounds that can act as oxidation protector. It would now be interesting to identify them and determine their specific toxicity.

Young-A Son is currently working as a Professor at Chungnam National University, Daejeon, South Korea. He has attended many international conferences and published several papers in many international journals.

The popularity of organic dye molecules in material science and chemical engineering has been rapidly growing, being enjoyed in the science and engineering field for various applications. The opto-based absorption and emission properties of organic chemosensor and LCD color filter dyes were prepared and discussed in terms of their model calculation approaches and empirical results in electron transfer systems. Studies on attractive absorption changing property of dye chromophore and fluorophore have been greatly enjoyed in the related industrial and research fields such as optoelectronics, chemosensor, LCD color filter and so on. The optical property based on intramolecular charge transfer system of dye molecules can be utilized as suitable sensing probes for checking media polarity and determining colorimetric chemosensing effect, especially hazardous parts detection. In this work, electron pushing-pulling system dye materials were designed and synthesized with the corresponding donor and acceptor groups. The selected donor moieties might be provided prominent amorphous properties which are very useful in designing and synthesizing functional polymeric molecules and in fabricating devices. Other reasons to choose are commercial availabilities in high purity and low price. Dye materials can produce impressive optical-physical properties, yielding them potentially suitable for applications in the synthesis of small functional organic molecules. Small organic functional molecules have unique advantages, such as better solubility, amorphous character and represent an area of research which needs to be explored and developed. Currently, their applications in metal organic compounds is rapidly expanding and becoming widespread in self-assembly processes, photoluminescence applications, chiral organocatalysts and ingrafts with nanomaterials.

S Seghir Mechaour has completed his Master from Mechanical Department, Batna University. Since 2013, he is preparing for his PhD. In addition to its training materials, he has skills in the study of dynamic phenomena. He was a trainee mechanical production in S.N.S. factory. He is an expert in Matlab and RDM6 software. He has participated in many conferences and workshop. The last conference was ICMCTF 2014, San Diego, USA.

Herein, we report a handy method to synthesize nanowires of Ag/AgCl commonly used as reference electrodes. Indeed, the wires about 500 nm diameters are produced by anodisation process under a potential of 2V. The results show that the initial variation in potential is due to the establishment of equilibrium at the surface, which is typical of many industrial reference electrodes. After 15 min, the potential remains constant even if the diameter of the wire decrease. These results are confirmed only when the surface morphology of the wire is covered by nanosheets. In this work, we tried to make use of the theory of physical crystallization available in the literature, seeking a correlation between the new morphology observed and measurable physical parameter, in this case the potential.