In this study, brush type and polymer stationary phases were prepared based on (S)-N-(1-phenylethyl) acrylamide, the polymeric phase demonstrated superior chiral recognition ability. The two synthesized by strategies, one was “grafting from” method, which obtained CSP initiating monomer polymerization surface of 3-methacrylatepropyl silica gel, other to”, fixed copolymer acrylamide trimethoxysi...

The high life expectancy of the world population provokes increase in demand for food and energy. As a result, intense industrialization application fossil sources is responsible levels CO2 emission waste generation. To mitigate practical solution at very short term urgently needed. capture its chemical processes valorization residual biomass are great importance nowadays. selective carboxylati...

the molecular associations in the binary mixtures of (methanol/solvent), (ethanol/solvent) and (propanol/solvent) were studied using nmr, ftir and vle data at different temperatures. the activity coefficients as the most important quantities representing the mixture deviation form ideal behavior were evaluated by using various association models to express the physical and chemical contribution...

In the amyloid fibrils formed from long fragments of the amyloid beta-protein (Abeta-protein), the monomers are arranged in parallel and lie perpendicular to the fibril axis. The structure of the monomers satisfies the amyloid self-organization principle; namely, the low free energy state of the monomer maximizes the number of intra- and interpeptide contacts and salt bridges. The formation of ...

This work is devoted to the development and study of processes accelerated structuring polymer composite materials in field high-frequency current (microwave field) which are used electronic instrument-making industries, etc. The complex properties features epoxy, acrylic epoxy microwave investigated. In comparison with traditional method polymerization (convection heating), equally affects stu...

atom transfer radical polymerization (atrp) of styrene was carried out at 105°c and a monte carlo simulation was employed to model the system. the variations of monomer conversion, the initiator concentration, average molecular weight, and molecular weight distribution were evaluated as the reaction proceeded. according to the results obtained, for similar reaction time, monomer conversion is h...

kinetics of radical polymerizations of waterborne alkyd/acrylic hybrid resin via batch mini-emulsion technique was studied using redox initiators (tbhp/fe2+/edta/asac  and  tbhp/fe2+/edta/sfs) at relatively low temperatures and thermal initiators (bpo, kps and aibn) at higher temperatures to seek the most suitable initiator system. at the end of all reactions the unreacted monomer content was r...