5^th Edition of International Conference on Polymer Science and Technology July 30-31, 2019 Holiday Inn Amsterdam – Arena Towers. Amsterdam Netherlands

Biography:

Luiza Epure has completed his Ph.D. in 2012 at Gheorghe Asachi Technical University of Iasi. She works at the Department of Natural and Synthetic Polymers from Faculty of Chemical Engineering and Environmental Protection. She does research in polymer and computational chemistry.

Abstract:

Azo-polymeric films constitutes the ideal candidates for cell cultures. Polysiloxanes and linear poly(p-chloromethyl) styrene with azobenzene unit attached to the lateral chains were synthesized and characterized. Due to the presence of photo-responsive azobenzene moieties, the films of these polymers showed different responses under UV light by matter reorganization at the nano level. A surface relief grating was obtained under controlled light irradiation. The SRG process is highly complex and depends on a variety of factors.

The nanostructured azopolymeric films (deposed on glass or polymethylmethacrylate surfaces) are suitable for cell culture applications. The cell response has been evaluated for different azopolymers having various film thicknesses and topographies.

The film elasticity is influenced by the chemical structure of the main polymer chain, while the adhesion properties are adjusted by the type of grafted azo-phenol. The surface relief, elasticity, and adhesion properties control the bio-cultures development.

Biography:

Alessandra Valentini is pursuing her PhD in Chemical Engineering at the University of Birmingham. She is part of a Marie Curie-Sklodowska ITN project called Bioclean, which aims to achieve deep down and long lasting clean surfaces via surface modification and photocatalytic approaches. She has completed her Master’s in Analytical Chemistry at the University of Bari (Italy). In her Master’s thesis, she developed a new UHPLC-ESI-MSMS approach to characterize the composition of free fatty acids in mussels and how this could be affected by thermal treatments. She has six months experience with the use of plasma etching treatments for silica biosensor applications.

Abstract:

Anti-fouling coatings find several applications in biomedicine, water treatment and material science, preventing microorganism’s attachment to the surface and biofilm development. Different strategies have been adopted to release anti-fouling properties on substrate and they are based on chemical and physical methods. Among the chemical methods, the use of soil release polymers (SRP) to modify hydrophobic textile surfaces (e.g. polyester) is gaining interests. In fact, hydrophobic soil adhesion is enhanced on hydrophobic fabrics, which are more difficult to clean as a consequence. SRP deposition on fabric surface leads to an increase of fabric surface energy, delivering soil release benefits. In this work, the deposition of a range of SRPs on polyester and the influence of deposition parameters, such as agitation, pH and SRP concentration, have been investigated. Streaming potential measurements have been used to assess changes in surface charge due to SRP deposition. The remaining concentration of each SRP in solution, after the deposition, has been assessed via UV/vis spectroscopy, leading to the determination of adsorption isotherms for the polymers. The observed changes in streaming potential were found to depend strongly on the polymer’s charge and on the concentration of SRP deposited. Moreover, the importance of SRP charge for determining its affinity with polyester was highlighted. Benefits on soil removal were identified when SRPs coating has been effectively deposited. Fabric surface characterization has also focused on identifying changes in porosity, roughness and wettability due to SRPs deposition via SEM, BET and contact angle measurement.

Biography:

JiÅ™í Zedník has completed his PhD in 1999 from Charles University in Prague (organic chemistry) and Post-doctoral studies in 2005-2006 form University of Liege (Center for Education and Research on Macromolecules (CERM) – prof. Robert Jerome group). He works as a Researcher in the Department of Physical and Macromolecular Chemistry, Charles University in Prague. He has published 57 articles in highly reputed journals.

Abstract:

This contribution reports the synthesis and post-polymerization modification of highly regioregular polymer precursor poly[3-(6-bromohexyl)thiophene] (PHT-Br), prepared by nickel- catalyzed Grignard metathesis polymerization (GRIM). Modification of PHT-Br into corresponding cationic polyelectrolytes using simple quaternization reaction with tributylamine or tributylphosphine respectively was used as the first approach for introducing functionality allowing sensing of selected metal ions. Used procedure allowed preparation of luminescent conjugated polyelectrolyte bearing simultaneously both phosphonium and ammonium pendant groups in the same polymer main-chains. Transformation of pendant bromide groups into azides ones followed by Huisgen 2+3 dipolar cycloaddition (“click” reaction) with luminophore N-(prop-1-yne-3-yl)-4-(morpholine-1-yl)-1,8-naphthalimide coded as NF was used as a second approach. Luminescence quenching has been evaluated quantitatively using Stern-Volmer methodology (using potassium ferrocyanide and ferricyanide as model pollutants). Polyelectrolyte-approach appeared promising although it is worth to mention a partial lack of selectivity. Click-based approach increased the sensor selectivity. Although free NF provided high luminescence yield (around 80%) as well as parent polythiopehene (18% luminescence quantum yield) product of “click” reaction exhibited only 4% of quantum luminescence yield. This observation represented a main drawback of “click” approach. In contrary sensing abilities of nahpthalimide-based polythiophene increased about two orders.

Biography:

Dr. Zhancheng Guo is professor and director of the State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, China. He engaged in research on metallurgical engineering for 30 years.            
 

Abstract:

The essence of metallurgical processes consists mainly of the reaction and separation. Generally, mass transfer and phase separation are the restrictive links in high-temperature metallurgical processes. To effectively separate solid phases from melt mixtures or inclusion phases from metal melts, an innovative approach of super-gravity technology was proposed, which has the characteristics of enhancing the processes of mass transfer and phase migration. Super-gravity technology may be applied in pyro-metallurgy process, such as concentration of valuable resources from molten slag, purification of metallic melts, recovery of metal from molten slag, separation of valuable metals from electronic wastes, and so on. For instance, super gravity is an effective method to separate rutile (TiO₂) phase from molten Ti-bearing slag, vanadium spinel [Fe₂VO₄] phase from molten V-bearing slag, suanite (Mg₂B₂O₅) phase from molten B-bearing slag, and rare earth phases from molten Re-baering slag, and so on. In addition, the inclusions in liquid metal such as liquid steel could be efficiently removed by super gravity. Driving by a centrifugal super-gravity force, metals such as Fe, Cu and Zn could be rapidly recovered from steelmaking molten slag, copper-making molten slag and zinc-coating molten slag, respectively. Moreover, super-gravity technology can be used to separation of Pb,Sn,Al,Zn,Cu and precious metals from waste printed circuit boards in heating process. Therefore, separation of the precipitated phase from its containing melt can be improved immensely in super gravity field, and the metallurgical processes can be achieved green and high-efficient. 

Biography:

XIAOCHUN WEN is studying his PhD at the age of 27 years and majoring in Metallurgical Engineering with the State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Xueyuan Road 30, Haidian District, Beijing 100083, China. (Up to 100 words)        
 

Abstract:

The Pb-Sb alloy was obtained during the pyrometallurgical processing of jamcsonite (Pb₄FeSb₆S₁₄). To effectively separate lead and antimony metals from the Pb-Sb alloy, a novel approach of super-gravity technology was introduced in the current study. Super-gravity technology plays a significant role in enhancing mass transfer and phase migration of heterogeneous phases as the interfacial tension between the two different phases became insignificant. The effect of the super-gravity field on Pb-Sb alloy was remarkable, and the corresponding mechanism of filtrating was discussed in detail. With the help of scanning electron microscopy-energy dispersive spectroscopy, metallographic microscopy and X-ray diffraction methods, the results demonstrated that the lead phase migrated to the bottom of the sample along the super-gravity direction, whereas almost of the antimony-rich phase accumulated along the opposite direction. The Pb-Sb alloy was separated effectively by the filter in the super-gravity field, and the separating efficiency increased with the increasing of the gravity coefficient with the range of G ≥ 100, After the separation of super-gravity at 533K (260℃), the gravity coefficient G = 600 and t = 5 minutes, the mass fraction of Pb in the filtrated lead phase reached 85 wt pct, which was close to the theoretical value 88.8 wt pct based on the Pb-Sb alloy’s phase diagram, and the mass fraction of Sb in the residued antimony-rich phase exceeded 90 wt pct.

Biography:

Chernyshev Andrei Alekseevich has received  his  MSc  degree  from  Institute  of  Chemistry,  Saint  Petersburg  State University  in  2018.  Presently, he is a PhD student in the Chemistry department at Charles University. Topic of his PhD project is: “Metalo-supramolecular systems for photonic and electronic applications”.

Abstract:

Conjugated metallo-supramolecular polymers (MSP) attract attention of many researchers, as  a  new  type  of  better  processable  materials  for  applications  in  optoelectronics  and  electronics. Research  in  this  field  combines  the  covalent  polymer  chemistry  and  organometallic  chemistry  of coordination  compounds.  A  typical  MSP  consists  of  organic  building  blocks  (called  unimers) capped  with  at  least  two  chelating  end-groups,  through  which  unimer  molecules  are  reversibly linked into supramolecular chains by coordination to metal ions (“ion couplers”). Numerous ditopic unimers bearing two 2,2′:6′,2″-terpyridine-4′-yl end-group (tpy) are described in literature. Specific configuration of nitrogen atoms provides fac-mer (facial-meridional) coordination of tpy end-groups to the ion couplers that gives MSPs with a well-defined stereochemistry representing an important feature for the charge transport in organic semiconductors. The properties of MSPs can be easily tuned by modifying the central block of unimer or ion couplers. Since 2011, number of α,ω-bis(tpy) unimers with oligothiophene and other central blocks and related MSPs have been developed and studied  as  to  their  properties  in  our  group.  Recently,  the  singlet  fission  (SF)  phenomenon  was revealed in thin films of the MSP formed by self-assembly of α,ω-bis(tpy)terthiophene with Zn2+  ion couplers. The present work concerns unimers containing thieno[3,2-b]thiophene-diyl units in central block and related MSPs with various ion couplers. Introduction of thieno[3,2-b]thiophene-diyl unit to unimers seems to be a good way to decrease the conformational disorder, increase the extent of π-electron  delocalization  and,  as  a  result,  to  reduce  the  bandgap  energy  in  resulting  conjugated systems. Study of photophysical properties of obtained MSPs with focus on the SF phenomenon is envisaged.

Biography:

Prof. Mona E. Ossman is the Head of Department of Computer-Based Engineering Applications, Informatics Research Institute, City of scientific Research and Technology Application, SRTA City, Alexandria, Egypt. I have got my Ph.D. in Chemical Engineering from Wayne University, MI, USA (2005). I have got my Ph.D. from Wayne University, MI, USA (2005). I have got my M.Sc. and B.Sc. in Chemical Engineering (with highest honors) from Alexandria University, Alexandria, Egypt (1991 and 1997). I have published over 50 papers in the field of water treatment. Prof. Ossman has attended many conferences in the field of waste water treatment.

Abstract:

Oily wastewater presents noteworthy dangers to the soil, water, air and individuals as a result of the perilous idea of its oil substance. Without a doubt, powerful treatment of oil tainted water is basic before its release into nature, keeping in mind the end goal to counteract contamination issue for biological communities and in addition for human wellbeing. For that reason, two distinctive ceramic membranes have been synthesized using bentonite and with expansion of melamine. The manufactured membranes have been characterized and the outcomes demonstrated that the addition of melamine to the bentonite enhanced the porosity and water permeability of membranes. The membrane discs created are steady in corrosive media. The most noteworthy level of decrease in COD (94.7%) is acquired for the feed grouping of 200 ppm with saturate flux of 4.63 E-05 (m3/m2. s)  utilizing (B+M) membrane. An increase in the oil concentration results in increase in permeates flux. The cost of the two manufactured membranes was assessed based on raw materials used in the present investigation. From the cost estimation, it can be finished up that the prepared membranes are modest when compared with ceramic membranes in the literatures.  In general, the displayed work recommends the competency of the melamine - ceramic membranes towards the treatment of oily wastewater emulsion.

Biography:

Ponkratov Denis Olegovich has completed his PhD from A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS) and continues to work in the laboratory of High-Molecular Compounds in the field of Polymeric Ionic Liquids.

Abstract:

In recent years, research efforts have been focused on development of solid polymer electrolytes with the goal to enhance the intrinsic safety and to replace flammable liquid electrolytes in Li batteries. However, application of this technology is still limited due to the insufficient ionic conductivity of the known polymers or by low tensile properties of gel electrolytes. The alternative approach is to incorporate covalently lithium salt moieties into the main polymer chain and to create the so-called single-ion conducting polymers (SICs). These all-in-one solid electrolytes are formed by a main polymer chain carrying anionic functional groups and lithium ions as the mobile counterpart. The rational design of SICs emerges as a primary strategy for enhancing the performance of lithium ion batteries. In this work, two methods were proposed for obtaining SIC with high ionic conductivity. In the first case, ion-conducting random copolymers were obtained using free radical polymerization of methacrylate-ionic monomers with a lithium cation (Li-monomers) with poly (ethylene glycol) methyl methacrylate ether. The second approach consisted in sequential RAFT-polymerization of Li-monomers and non-ionic monomers to produce block copolymers

Biography:

Professor Jian Pan recieved his Master and PhD degree in Mineral Processing Engineering from Central South University in 2000 and 2007, respectively. He joined Commonwealth Scientific and Industrial Research Organization (CSIRO) as a visiting scientist from 2015 to 2016. His research currently forcuses on: 1) fundamentals and technologies of iron ore agglomeration; 2) short-process technology of ferrous metallurgy; and 3) separation and recovery of metal values from metallurgical wastes. He has published more than 40 journal papers and has been serving as an editorial board member of Mineral Process and Extractive Metallurgy (Transactions of the Institutions of Mining and Metallurgy).

Abstract:

Zinc-bearing dust was generated in the steel industry from iron and steel companies, which contains many valuable and haezardous elements, such as iron, zinc and lead. Currently, approximately 40 million tons of Zinc-bearing dust is estimated to be produced and dumped in the China annually, resulting in rescoruce wastes and potentially damages to the ecological environment. It is therefore extremely urgent to develop appropriate technology for comprehensive utilization of dust from both economic and environmental perspectives. In our previous papers, an innovative process of updraft pre-reductive sintering process was proposed to treat Zinc-bearing dust. Thus, to better understand the mechanism of redution and volatilizaiton behaviors of Fe, Pb and Zn in the new process,  in this study, an investgate on reduction kinetics of realted oxides in the Zinc-bearing dust was conducted by simulating pre-reductive sintering process. The results show that the reactions are controlled by chemical reaction, and the calculated activation energier are 43.88 and 72.33KJ.mol^-1, respectively, for the reductions of iron oxides and ZnO. Meanwhile, the reducing reaction of PbO is controlled by gas diffusion and its activation energy is determined as 18.22KJ.mol^-1. Based on the dynamic analysis, high temperature and strong reduction atmospher is beneficial to reduciton of iron oxides and removal of Pb and Zn.

Biography:

Dina A.El Mously is an assistant lecturer in the analytical chemistry department at faculty of pharmacy, Cairo University.She had her bachelor of pharmaceutical sciences from the same university. Her research interests are focused on developing the new analytical methods for the determination and quantification of different analytes. She has recently published two scientific papers in different reputed journals.

Abstract:

Two simple and sensitive chromatographic methods were developed for the simultaneous determination of chlorpheniramine maleate, pseudoephedrine hydrochloride and propyphenazone in their combined dosage form. The first method was a reversed-phase high performance liquid chromatography using methanol: 0.02 M phosphate buffer pH 3.0: triethylamine (60: 40: 0.1, by volume) as a mobile phase. Separation was carried out using RP C18 analytical column (250 × 4.6 mm, 5µm) and a flow rate of 1.0 mL/min. The separated peaks were detected at 215 nm. The second method was a thin layer chromatography-densitometric method, where the three drugs were separated on silica gel F254 plates using ethyl acetate: methanol: toluene: 30% ammonia solution (7.5: 1: 1.5: 0.5, by volume) as a developing system. The separated bands were scanned at 215 nm. The suggested methods were validated according to the International Conference on Harmonization guidelines with good results and they were successfully applied to pharmaceutical formulation without interference from excipients. The proposed methods could be used for routine analysis of the mentioned drugs in quality control laboratories.

Biography:

Luiza Epure has completed his Ph.D. in 2012 at Gheorghe Asachi Technical University of Iasi. She works at the Department of Natural and Synthetic Polymers from Faculty of Chemical Engineering and Environmental Protection. She does research in polymer and computational chemistry.

Abstract:

Azo-polymers are part of the “intelligent materials family” because they are able to change the configuration, elasticity, or other mechanical parameters using only the light as an external stimulus.

Using of a polarized laser source can generate surface relief gratings on the film surface used as cell culture support. Azobenzenes undergo an isomerization process, passing from the stable trans configuration, toward the less stable geometric isomer, cis. Large conformational changes are associated with the trans-cis photochemical isomerization of azobenzenes.

Understanding and manipulating these reordering phenomena at the molecular level is beneficial for the applications of azopolymers in the bio-field. Valuable information can be obtained through molecular modeling studies. Using this method we are trying to understand the mechanism that originates from the mass transport process which takes place in azobenzene materials.

Biography:

Álvaro Santana-Mayor is a PhD student at the Department Unit of Analytical Chemistry of the University of La Laguna (ULL) located in Tenerife (Canary Islands, Spain). In 2016 and 2017, he finished his Bachelor and Master’s degrees in Chemistry, respectively, at the same university. Nowadays Álvaro is developing his PhD studies about the determination of compounds with endocrine disrupting activity by advanced analytical techniques combined with conventional and/or alternative extraction techniques in environmental and agri-food samples.

Abstract:

Plastic migrants are substances present in plastic materials which are non-chemically linked to the polymeric matrix and, therefore, can be released to the environment or food samples. Due to their harmful effects on health and ecosystems, it is necessary to develop environmentally friendly analytical methods for their determination in samples of interest, even at low levels of concentration. In this sense, deep eutectic solvents (DESs), based on a mixture of a hydrogen bond donor (HBD) and a hydrogen bond acceptor (HBA), represent an interesting alternative to conventional extraction solvents. Introduced by Abbott et al. [1] in 2003, they are generally composed of quaternary ammonium or phosphonim salts, as HBAs, and carboxylic acid, amines, amides or alcohols, as HBDs. In this work, a new, simple, fast and efficient method based on the use of a choline chloride-based DES, as green solvent, has been developed for the extraction of a group of eight plastic migrants in different beverages. Separation and quantification were carried out by high performance liquid chromatography coupled to a diode-array detector system. The extraction procedure was successfully validated obtaining recovery values in the range 85-120 %, as well as limits of detection of the method in the range 5.1-17.8 µg/L. With the aim of evaluating the applicability of the develop methodology, the presence of target analytes in beverages such as tea drinks, apple soft drinks and pineapple juices was evaluated. The analytes detected in samples were confirmed by mass spectrometry.

Biography:

Ruth Rodríguez Ramos is a PhD student at the Department Unit of Analytical Chemistry of the University of La Laguna (ULL) located in Tenerife (Canary Islands, Spain). In 2017 and 2018, she finished her Bachelor and Master’s degrees in Chemistry, respectively. Ruth is developing her PhD thesis about the development of new analytical methodologies for the determination of endocrine

Abstract:

Phthalic acid esters (PAEs) are widely used as plasticizers in the manufacture of consumer and industrial products to improve their flexibility as well as other handling properties. These subtances are not chemically bound to the polymeric matrix and they can be easily released to the environment as well as food samples that can produceimportant toxic effects on humans even at very low levels of concentration. For these reasons, it is especially relevant to develop highly sensitive analytical methodologies to determine PAEs in food matrices, since they constitute an important via of human exposure to these contaminants.

In this sense, the QuEChERS (Quick, Easy, Cheap, Effective, Rugged & Safe) method developed by Anastassiades et al. [1] for the determination of pesticides in fruits and vegetables, can be applied as sample pretreatment for both the extraction of PAEs from beverage samples and the clean-up of the matrix.

The aim of this work is to develop a new methodology based on the original QuEChERS method [1] for the determination of a group of twelve phthalates in beverage samples, including beer, cider and grape juice. The separation and quantification was carried out using an ultra-high performance liquid chromatography-tandem mass spectrometry system. The methodology was validated obtaining recovery values in the range 75-120 % and limits of quantification between 0.034 and 0.809 µg/L. In addition, twenty five real samples were evaluated to demostrate the applicability of the developed procedure for the analysis of PAEs in real drink samples.

Biography:

Aymen Khalid AL-Suwailem is a professor in pharmaceutical analytical chemistry, Prince Sultan Cardiac Centre. His research interests are pharmaceutical chemistry, High performance liquid chromatography, and capillary electrophoresis                                                                                                                                                                                                      

Abstract:

A stereoselective high-performance liquid chromatographic (HPLC) method was developed and validated to determine S-(-)- and R-(+)-propranolol in rat serum. Enantiomeric resolution was achieved on cellulose tris(3,5-dimethylphenylcarbamate) immobilized onto spherical porous silica chiral stationary phase (CSP) known as Chiralpak IB. A simple analytical method was validated using a mobile phase consisted of n-hexane-ethanol-triethylamine (95:5:0.4%, v/v/v) at a flow rate of 0.6 mL min^-1 and fluorescence detection set at excitation/emission wavelengths 290/375 nm. The calibration curves were linear over the range of 10–400 ng mL^-1 (R = 0.999) for each enantiomer with a detection limit of 3 ng mL^-1. The proposed method was validated in compliance with ICH guidelines in terms of linearity, accuracy, precision, limits of detection and quantitation, and other aspects of analytical validation. Actual quantification could be made for propranolol isomers in serum obtained from rats that had been intraperitoneally (i.p.) administered a single dose of the drug. The proposed method established in this study is simple and sensitive enough to be adopted in the fields of clinical and forensic toxicology. Molecular modeling studies including energy minimization and docking studies were first performed to illustrate the mechanism by which the active enantiomer binds to the β-adrenergic receptor and second to find a suitable interpretation of how both enantiomers are interacting with cellulose tris(3,5-dimethylphenylcarbamate) CSP during the process of resolution. The latter interaction was demonstrated by calculating the binding affinities and interaction distances between propranolol enantiomers and chiral selector. Chirality  00:000–000, 2014