6^th Edition of International Conference on Polymer Science and Technology April 01-02, 2020 Paris, France

Biography:

Dr PADAYODI Essolé is Associate Professor at University of Technology of Belfort-Montbéliard (UTBM, France) and has his expertise in biosourced materials and passion in sustainable design. He is a header of the “Eco-materials” platform in the pole ERCOS of ELLIADD (EA. 4661, France) laboratory where he led technology research projects for developing sustainable and lightweighting materials for automotive companies.

Abstract:

The marine pollution of plastic wastes is one of the severe impacts of the human activities on the planet. Main treatments of plastic wastes include landfilling and incineration with or without energy recovery. A sustainable management is transforming such wastes into value-added products. This study aims to reinforce recycled plastics with unusable agricultural wastes so to meet requirements of added value use of recycled plastics. In this study, recycled polystyrene (R-PS) is reinforced with cottonseed hulls (CS-H). Grinded CS-H fillers were melting mixed with grinded polystyrene at filling contents of 10 %wt, 20 %wt and 30 %wt. The effect of CS-H fillers adding and their content on physical and mechanical properties of R-PS is determined using tensile test (ISO 527-2), low velocity impact tests (ISO 6603), FTIR spectroscopy, DSC and SEM analysis.

Up to 20 %wt, CS-H fillers adding improves the yield stress of R-PS by 40% (from 15 MPa to 22 MPa). Beyond 30 %wt content, the non-adhesion of fillers to the plastic acts likely as a high porosity and decreases the tensile resistance of R-PS. Regardless of the content of CS-H fillers, the addition of these increases the Young modulus of R-PS (from 1600 MPa up to 3600 MPa at 20% wt of CS-H content) and decreases it impact resistance by -20% (the peak impact force decreases from 1 KN to 0,8 KN and the absorbed energy from 2,72 J to 2,25 J).

Results showed that CS-H fillers adding not only increases the tensile resistance of R-PS but lowers the weight and the cost of recycled plastics to meet footprint requirements, thanks to the availability (in cotton producing countries), renewability, light weight and low cost of cottonseed hulls.

Biography:

Farhad A. Boroumand was born in Tehran, Iran, in 1964. He received his B.E. degree from Mashad University, Iran, in 1988 and the M.Tech. degree from Indian Institute of Technology (IIT), Delhi, India, in 1992. In 2000 he received his Ph.D. degree from King’s College, London, U.K.

During 2000 and 2006 he worked on four postdoctoral research projects in Sheffield and Surrey Universities concerning nano and organic devices.

Currently he is working as an assistant professor in KNTU teaching courses such as Nanotechnology, Organic Electronics.

He has published more than 100 journal and conference papers and his research interests are in the area of Nano-Organic Layers, Detection, Solid State Physics and Optoelectronic Devices.
 

Abstract:

The aim is to investigate the influence of a buffer layer on the performance of polymer solar cells with ITO/buffer layer/MEH-PPV:C60/Al structure where indium tin oxide (ITO) was used as anode, poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) as donor, fullerene molecule (C60) as acceptor and aluminium (Al) as cathode. At first step, polyaniline (PANI) was prepared by an aqueous oxidative polymerization reaction. In the next step, the synthesis PANI was used as buffer layer in polymer solar cells and results were compared with fabricated device by using PEDOT:PSS. The fabricated device with polyaniline (PANI) demonstrated a significant increment in the short circuit current density ( J_sc) ,open circuit voltage (V_oc ) and fill factor (FF), as compared to fabricated device with PEDOT:PSS.

Biography:

Hamad Al-Matar is Associate Professor in Organic Chemistry at Kuwait University, Kuwait. In the year 2009, he completed PhD in Organic Chemistry from University of Sussex, Brighton, UK. In the year 1997, he completed his MSc in Organic Chemistry from Howard University, Washington DC, USA. he has published more than 25 research articles in SCI(E) journals.

Abstract:

Biopolymers were used as supports for the preparation of palladium-based nanoparticles (pd- NPs). The chitosan-based Pd (II) catalyst (non-toxic, cheap, eco-friendly) were structurally characterized using a range of methods such as Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), Differential scanning calorimetry (DSC), Differential thermal analysis (DTA), Xray photoelectron spectroscopy (XPS ), transmission electron microscopy

(TEM), scanning electron microscopy (SEM).( Fig 1,2) palladium is commonly known as best catalyst in the Suzuki–Miyaura coupling reactions due to its very high efficiency therefore, using the recently chitosanbased Pd (II) catalyst in the Suzuki–Miyaura coupling reactions, will be described. The reaction optimization and substrate scope will be discussed, and role of rapid catalyst activation in achieving mild reaction conditions will be emphasized.

Fig 1. SEM spectra of (a) chitosan, (b) chitosan-schif base (c) chitosan-pd

Fig. 2. EDS spectra of chitosan-based Pd (II) catalyst

Audience Take Away:

• I think the audience will surely get benefited by the work presented herein as the methodology developed is quite simple, advantageous and easy to handle.
• The researchers will be able, after my talk, do their own catalyst preparation using similar method.
• The different applications in industry, medicine and ecology will be discussed.
• The chitosan-based Pd (II) catalyst can be applied to Suzuki–Miyaura coupling reactions.

Biography:

Paul O. Ayegba is a PhD student at Ahmadu Bello University Zaria and a Fulbright Scholar at University of California Berkeley. He completed a Masters and Bachelors degree in Engineering from the Federal University of Technology Minna. He has published more than 5 papers in reputed journals. 

Abstract:

This study investigates the effect of U-bend on polymer drag reduction (DR) and flow patterns for oil-water flows. The test section consisted of 19-mm ID clear polyvinyl chloride (CPVC) straight pipes and U-bend (R = 100 mm). Measurements were carried out under different flow conditions at hydrodynamically developed flow section before the bend, in the bend and at two redeveloping flow sections after the bend. Observed flow patterns at various test sections were similar though mixture velocities at transition sometimes varied between the test sections.  In general, the addition of polymer imposed partial or complete flow stratification. Pressure losses differed at the various test sections and this difference was strongly related to the superficial velocity of the phases and flow patterns.  At high mixture velocities, pressure losses at the redeveloping section after the bend were higher than those at other two sections while at low mixture velocity, they were higher at the bend than in the straight pipe sections. DR at all test sections generally increased with water superficial velocity and reduced with oil fraction in the region of strong turbulence. At high mixture velocities, DR upstream of the bend was highest while the least was recorded at the bend. A reverse behaviour was recorded at low mixture velocities. The highest DR upstream of the bend, in the U-bend and at the two downstream redeveloping sections were 40% (U_SO = 0.12 ms^-1), 34% (U_SO = 0.48 ms^-1), 28% (U_SO = 0.12 ms^-1), and 29% (U_SO = 0.12 ms^-1) respectively. 

Biography:

Seena K. Thomas is an Assistant Professor at Sree Sankara College, Kalady for last five years. Before that, she had two years of teaching experience in higher secondary and collegiate levels. She completed her M.Phil. in Chemistry from Cochin University of Science and Technology, Kochi in 2013. After that she is continuing her M.Phil. work as Ph. D work till now as part time research with teaching.

Abstract:

Biopolymers are polymers produced by living organisms. They are polymeric biomolecules and the monomeric units in the Biopolymers are covalently bonded to form larger structures. Biopolymers like Cellulose nano crystals were prepared from Acacia Caesia and chitin nanocrystals are prepared from Shrimp shells by the combination of chemical and mechanical treatments. In this work biofillers like nanocrystals of cellulose and chitin were incorporated into Natural Rubber through latex stage mixing. Mechanical properties and thermal properties of composites are analysed. A substantial improvement in mechanical and thermal properties was observed by the addition of nanocrystals. The improvement was dependent upon the efficiency of filler dispersion. Hybrid fillers gave the total sum properties of individual fillers is a double advantage.

Biography:

He is a Professor at Lviv Polytechnic National University, Lviv, Ukraine. Education: 1972 MS Chem. Eng., Lviv Polytechnic National University, Lviv, Ukraine; 1980 PhD Macromolecular Science, Institute of Polymer Chemistry, National Academy of Sciences, Kyiv, Ukraine; 2006 D. Sc. Macromolecular Science, Lviv Polytechnic National University, Lviv, Ukraine. Sabbatical, Fellowships and Grants: Clarkson University, Potsdam, NY, USA; Taiwan Textile Research Institute, Taipei, Taiwan; Institute for Polymer Research, Dresden, Germany; Royal Institute of Technology, Stockholm, Sweden. He has published more than 40 papers in reputed journals and earned more than 50 patents.

Abstract:

The specially designed reactive copolymers with pendant peroxide groups (RPC) and poly(ethylene glycols) of various molecular weights (PEG) were used for obtaining the cross-linked reactive polymer matrices useful for in-situ synthesis of semiconductor nanocrystals. The networks in the polymer matrices were formed by annealing the mixtures of RPC and PEG owing to both a sequence of radical reactions (decomposition of the RPC peroxide groups, hydrogen abstraction, and recombination reactions) and acylation reactions yielding ester linkages between macromolecules of RPC and PEG. The network formation was accompanied with an increase in the matrix hydrophobicity owing to transformation of some hydrophilic groups in macromolecules of the initial polymes RPC and PEG. The cross-linked polymer matrices obtained with nanopores of controlled size can serve as nanoreactors for in-situ synthesis of semiconductor nanocrystals (NCs). 

The new method for obtaining the nanocomposites based on the cross-linked polymer matrices with embedded undopped and dopped semiconductor nanocrystals of controlled size was developed. The size of NCs and the nanocomposite optical properties depended on several factors, among which the most important were the nature of RPC, MW of PEG, PEG/RPC ratio, concentration of precursor (metal salts). The notable benefit of the method developed is feasibility of obtaining the nanocomposites with a high concentration of NCs (up to 20 wt% and more). It is very important that, in spite of high NC concentrations, the nanocomposites were transparent, not opaque evidently because of formation of NCs inside of the swelled polymer gel matrix that avoids their aggregation.

Biography:

Sepehr Haghighi is currently Master of Science degree in the major of Food Safety at Islamic Azad university, Science and Research Branch. He is Also Occupied at a food and pharmacetutical raw material supplier company. He intents to continue his goal in the biodegradable packaging.

Abstract:

The aims of the present study was to evaluate the effects of Gelatin reinforced by Nanocelluluse particles incorporated Buninum persicum and Ziziphora clinopodioides essential oil on chemical (TVN, pH and PV), microbial (Total mesophilic and psychrotrophic bacteria, Pseudomonas spp. and Enterobacteriaceae family) and sensory properties (odor, color and overall acceptability) of chicken fillet during storage at refrigerated temperature (4±1ºC) for 9 days. The chemical compositions of the Ziziphora clinopodioides and Buninum persicum essential oil were identified by gas chromatography coupled with mass spectrometer detector (GC-MS. Based on the results of the present study, incorporation of Gelatin- cellulose nanoparticle , ZEO and BEO improved the water vapour permeability coefficient (WVPC). The lower lightness (L*) and higher redness (a*) and consequently a darker color was found in the film incorporated with GFL. According to our results, the antibacterial activitiy of Gelatin-nanocelloluse particle film incorporated with BEO and ZEO minimize the bacterial effects, improve the quality and finally extend the shelf life of the product. Based on studied microbial and chemical indices, the shelf life of chicken fillet samples were inhanced for 9 days. In general, introducing higher concentrations of the ZEO and BEO had not adverse effect on the organoleptic properties of treated samples compared to those of control sample during times of storage. Due to higher chemical and microbial growth, untreated samples of chicken meat had lower odor, color and overall acceptability. Based on our findings, gelatin-nanocelloluse film together BEO and ZEO could be a good method to keep meat during cold storage without any significant bacterial growth and lipid oxidation as well as without remarkable loss of the overall quality.

Biography:

Abdul Majeed currently works at the Faculty of Pharmacy, Bahauddin Zakariya University. Abdul does research in Pharmaceutics, controlled drug release and clinical pharmacy Their most recent publication is 'Acute Respiratory Distress Syndrome: Bench-to-Bedside Approaches to Improve Drug Development'.

Abstract:

The aim of this work was the development and evaluation of controlled release formulations consisting of methacrylate derivatives and ethyl cellulose (EC) were synthesized using oil-in-oil (O/O) solvent evaporation method. Drug release studies were performed in different dissolution media. Maximum drug released was observed at pH 7.4. Fourier transform infrared spectroscopy (FTIR) spectra, SEM, and thermal analysis showed compatibility between drug and polymers. Pharmacokinetic parameters were calculated by Phoenix WinNonLin® Version 6.3 software. The average AUC_0-t was found to be 2483.71 ± 13.173 ng/ml.h, 5954.37 ± 12.110 ng/ml.h, 6400.82 ± 19.131 ng/ml.h and 7427.4 ± 49.322 ng/ml.h for group 1-4 respectively. The maximum concentration (C_max) of IBH for all groups predicted from pharmacokinetics data were 880.38 ng/ml, 718.43 ng/ml, 721.87 ng/ml and 805.11 ng/ml respectively. Thus, in-vitro and in-vivo drug release studies of polymeric microspheres proved their controlled release behavior with preferential delivery for an extended period of time. 

Biography:

L’Hachemi AZOUZ was born on February 25, 1983 in Bejaia. He holds a doctorate degree in chemistry option chemistry and environment at Abderrahmane Mira – Bejaia University (Algeria). Currently teach as a research professor at the same university. I work on the development of biodegradable polymers of therapeutic interest. I participated in many national and international seminars. I am author of two publications in two renowned  international journals.

Abstract:

A biodegradable triblock poly(ε-caprolactone)–poly(ethylene glycol)–poly(ε-caprolactone), denoted PCEC, copolymer was successfully synthesized by ring-opening polymerization of ε-caprolactone, and was characterized by intrinsic viscosimetry, ¹H nuclear magnetic resonance, infrared spectroscopy and X-ray diffraction. Copolymer microparticles loaded with ibuprofen were prepared by an oil-in-water (o/w) emulsion solvent evaporation process. In this work, four selected process parameters (shaking speed, time of contact, poly(vinyl alcohol) concentration, and ibuprofen concentration) were adjusted at two different values. For each of the sixteen experimental conditions, repeated twice, the drug encapsulation efficiency of the microspheres was determined. A two level full factorial design method was applied to evaluate the effect of the four factors on the observed responses (encapsulation efficiency) and to determine the optimal conditions for the microencapsulation of the ibuprofen through an accurate statistical protocol. The JMP 7 software was applied for analyze all the results and optimize the experimental conditions. The results showed that the ibuprofen concentration and the shaking speed had a great influence on encapsulation efficiency. The interaction plots of the four selected factors were also studied, and the results showed that a significant interaction is observed between shaking speed vs. IBF concentration, and between PVA concentration vs. IBF concentration. According to the electron micrographs the PCEC microparticles obtained exhibit a spherical shape as shown by electron microscopy. The mean diameter of the microspheres ranged from 90 to 236 μm. Finally, PCL based copolymers has a great interest in the field of microencapsulation of hydrophobic drug such as ibuprofen.

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Biography:

Kiana Entezami is the R&D Specialist at Arsamplast Co. at the same time prior Master student of Polymer Engineering at Science and Research Branch of Islamic Azad University of Iran where she works to improve her knowledge on Compounding industry and polymer processing  In 2015-2020 with Arsamplast Co., Entezami has run few projects regarding polymer compounds such as developing new products for automobile applications such as ESD PE, Anti-hydrolysis PA and etc. 

A graduate from Science and Research Branch of Islamic Azad University, Kiana holds a master degree in polymer engineering. Parallel with working at Arsamplast, Kiana investigates her master thesis at Science and Research Branch of Islamic Azad University of Iran under the supervision of Dr. Milad Mehranpour a professor at Science and Research Branch of Islamic Azad University of Iran with consultant of Dr. Hossain Nazockdast, professor at Amirkabir Technical University. While there, they achieved an improvement in extrusion processing of polypropylene by using a combination of PPA using Organoclay.

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Abstract:

Product quality and, in general, processing windows and rates of production in the extrusion of molten polymers are limited by various flow instabilities (mainly melt fracture) that are observed at high production rates. While there still are unresolved issues in comprehending these phenomena, industry demands for process optimization dictate the employment of processing aids for product quality improvement and energy requirement reduction. In this review paper, most commercially used processing aids are discussed, the purpose of this work is to investigate the effect of Boron- nitride, Nano-clay and Fluoropolymer PPA on the polypropylene (PP) flow instabilities. In this work, the Capillary rheometer is used in order to simulate the flow behavior and to determine the shear rate at which smooth extrudates can be produced. Moreover, the Parallel-plate rheometer is used in order to study of the effect of PPAs on the linear viscoelastic behavior of the PP. The results indicate that using the combination of PPAs reduces the flow instabilities more effectively and improve the extrusion process

Biography:

Dr PADAYODI Essolé is Associate Professor at University of Technology of Belfort-Montbéliard (UTBM, France) and has his expertise in biosourced materials and passion in sustainable design. He is a header of the “Eco-materials” platform in the pole ERCOS of ELLIADD (EA. 4661, France) laboratory where he led technology research projects for developing sustainable and lightweighting materials for automotive companies.

Abstract:

The properties of biosourced composite materials depend not only on the properties of the individual components but also on their interfacial adhesion. But the incompatibility between the hydrophilic natural fibers and the hydrophobic polymer matrix weakens the fiber-matrix adhesion. The objective of this study is to improve the compatibility between flax fibers and polyester matrix by a preliminary treatment of cellulosic fibers by Corona discharge. Two types of composites were produced by infusion with a stacking of [0/90] layers oriented in both warp and weft directions: the composite made of a flax fibers reinforced polyester resin (Vf ~ 61± 2 vol. %) and the composite made of a glass fibers fabric reinforced polyester resin (Vf ~ 63 ± 2 vol. %). The flax fibers and the glass fibers were previously dried at 60°C during 24 hours and treated by the Corona discharge by means of a low frequency high voltage generator.

The mechanical properties of composites reinforced with treated and untreated flax fibers and glass fibers are compared: the longitudinal elastic modulus EL and the yield stress XT of the flax/polyester composite increase significantly (+20% to +38%) whereas those of glass/polyester composite increase less importantly. FT-IR spectra analysis, topography analysis and SEM analysis revealed a compatibilization effect on treated flax fibers. New C=O and C-H linkages are created and fibers are more impregnated by the resin. Results showed that the Corona discharge treatment of flax fibers in particular leads to C=O and C-H linkage creation that lowers the fabric surface tension and its better impregnation. This improves the adhesion of fiber-matrix interface and thus the mechanical resistance of the composite.

Biography:

Samantha Borja is 22 years old, she is studying the last semester of Chemical Engineering at the National Polytechnic School in Quito, Ecuador. She has specialized in the mention of Food Technology and Environmental Remediation. Currently, she is part of a research project to obtain adhesives from Polyvinyl Alcohol (PVA) and chemically modified starch, which comes from different botanical sources such as oca (Oxalis tuberosa) and achira (Canna edulis). She has previously participated as speaker at the CONEIQ 2018, carried out at the San Francisco of Quito University, with the subject of degradation of azoic dye Direct Blue BRL through two absorption techniques:Fenton and Persulfate ions

Abstract:

The development of adhesives from renewable raw materials attract the attention of the scientific community, due to it promises the reduction of the dependence with materials derived from oil. This work proposes the use of modified “oca (oxalis tuberosa)” starch and polyvinyl alcohol (PVA) in the elaboration of adhesives for lignocellulosic substrates. The investigation focused on the formulation of adhesives with 3 different PVA:starch (modified and native) ratios ( of 1:0,33; 1:1; 1:1,67 ). The first step to perform it was the chemical modification of starch through acid hydrolysis and a subsequent urea treatment to get carbamate starch. Then, the adhesive obtained was characterized in terms of instantaneous viscosity, fourier-transform infrared spectroscopy (FTIR) and shear strength. The results showed that viscosity and mechanical tests exhibit data with the same tendency in relation to the native and modified starch concentration. It was observed that the data started to reduce its values to a certain concentration, where the values began to grow. On the other hand, 2 relevant bands were found in the FTIR spectrogram. The first in 3300 cm-1 of OH group with the same intensity for all the essays and the other one in 2900 cm-1 , belonging to the group of alkanes with a different intensity for each adhesive. On the whole, the ratio PVA:starch (1:1) will not favor crosslinking in the adhesive structure and causes the viscosity reduction whereas in the others ones the viscosity is higher. It was also observed that adhesives made with modified starch had better characteristic, but the adhesives with high concentrations of native starch could equals the properties of the adhesives made with low