✦ LIBER ✦

Enzymatic synthesis and characterization of amphiphilic block copolymers of poly(ethylene oxide) and amylose

✍ Scribed by Kazunari Akiyoshi; Masaharu Kohara; Kensuke Ito; Shinichi Kitamura; Junzo Sunamoto

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 53 KB
Volume: 20
Category: Article
ISSN: 1022-1336
DOI: 10.1002/(sici)1521-3927(19990301)20:3<112::aid-marc112>3.0.co;2-q

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✦ Synopsis

Amphiphilic A-B block copolymers, x-methoxypoly(ethylene oxide)-amylose copolymers (MPEO-amylose), were synthesized by an enzymatic reaction using potato phosphorylase from an MPEO (M w = 5.0610 3 )-maltopentaosylamine derivative as a primer and a-D-glucose-1-phosphate as a substrate. MPEO-amyloses with various molecular weights of amylose (DP = 26, 36, 73 and 112) were obtained. None of the MPEO-amyloses (5 mg/ml) precipitate in water containing 10 vol.-% DMSO even after 24 h. The MPEO-amyloses effectively form complexes with iodine in water.

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