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Synthesis of poly(amino acid)-urethane copolymers. Effects of solvents and initiators

✍ Scribed by Shinji Uchida; Tomeyoshi Oohori; Tamotsu Tanaka; Masahiro Suzuki; Hirofusa Shirai


Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
86 KB
Volume
200
Category
Article
ISSN
1022-1352

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New copolymers of amino acid and urethane (PAU), in which a polyurethane segment was combined with poly(β₯-methyl-L-glutamate) (PMLG) of various contents, were synthesized by the copolymerization of the polyurethane prepolymer (UPP) having isocyanate groups at both terminals of the chain and β₯-methyl

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Block copolymers with polyester-urethane and polymethyl methacrylate (PMMA) or polystyrene (PS) sequences were obtained by the use of polyester-or polyether-urethane macroazo initiators (PUMAI). PUMAI with a well-defined number of azo groups per chain were prepared via a two-stage reaction procedure