Consumption Of Functional Groups Research Articles

The Study of Formation of Amphiphilic Network Block Copolymer of N-Isopropylacrylamide

The regularities of formation of the structure of amphiphilic network copolymers on radical copolymerization of N-isopropylacrylamide and polyester dimethacrylate are investigated. The kinetic laws of the consumption of functional groups and the increase in the gel content during formation of a crosslinked product are studied. It is shown that the synthesis of crosslinked amphiphilic copolymers proceeds via competing reactions of N-isopropylacrylamide homopolymerization and its copolymerization with polyester dimethacrylate. With the excess of the monofunctional monomer, a homogeneous rubber-like network copolymer is formed, whereas the excess of the bifunctional reagent results in the morphological inhomogeneity of the reaction product.

Studies on copolymerization of succinic anhydride and allyl glycidyl ether

Functional aliphatic polyesters were synthesised by melt copolymerization of succinic anhydride (SA) and allyl glycidyl ether (AGE) in the presence of benzyltrimethylammonium chloride (BTMAC) as a catalyst. The influence of the parameters of the process: AGE/SA feed ratio, duration of the reaction, amount of water and of the catalyst added on the reaction course and on characteristics of the products obtained has been examined. Tendency to gelation of the polyesters during some syntheses and increase of molecular weight after consumption of functional groups were observed.