Abstract
A study was made of new properties of polymer-polymer catalytic adsorption systems in which parts combining the substrates and catalytically active groups belong to different polymers. An investigation was made of polyoxyethylene ester-N-benzoylhistidine-polyacrylic (or polymethacrylic) acid systems in hydrolysis of neutral and positively charged substrates. It was shown that the catalytic efficiency of polyoxyethylene ester of N-benzoylhistidine in hydrolysis of p-nitrophenylacetate, a neutral substrate, remains practically unchanged, while hydrolysis of a positively charged substrate— p-dimethylaminophenylacetate iodomethylate in the presence of polyoxyethylene ester of N-benzoylhistidine, is considerably accelerated on adding poly acid. It is assumed from kinetic results that a polyoxythylene ester complex of N-benzoylhistidine-poly-acid is formed. The catalytic behaviour of polyoxyethylene ester of N-benzoylhistidine was examined in hydrolysis of a polymer substrate—a copolymer of acrylic acid with p-nitrophenyl ester of p-vinylbenzoic acid.
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