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Preparation of poly(dimethylsiloxane)–polypeptide block copolymers

✍ Scribed by Charles M. Kania; Hadi Nabizadeh; Daniel G. McPhillimy; Robert A. Patsiga

Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
644 KB
Volume
27
Category
Article
ISSN
0021-8995

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✦ Synopsis

Block copolymers composed of poly(dimethylsi1oxane) segments linked to polypeptide have been synthesized by reacting primary mine-terminated silicone with N-carboxy anhydrides of amino acids. The mine-terminated silicone was prepared by reacting "living" polysilanolate with y-aminopropyltriethoxysilane. The block copolymers prepared consisted of segments of PO~Y(DLphenylalanine) or poly(y-benzyl-L-glutamate). The block copolymers were purified by extraction with solvents which are selective for the homopolymers. Analysis of the products was accomplished by hydrolysis of the polypeptide segments, infrared spectra, gel permeation chromatography, and elemental analysis. The content of the copolymers ranged from 50 to 87% polypeptide.

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