A MOLECULAR MECHANICS STUDY ON CONFORMATIONS OF BACTERIAL POLYESTER POLY-(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE)

被引：9

作者：

NAKAMURA, K ^{[1
]}

KAMIYA, N ^{[1
]}

SAKURAI, M ^{[1
]}

INOUE, Y ^{[1
]}

CHUJO, R ^{[1
]}

机构：

[1] TOKYO INST TECHNOL,DEPT BIOMOLEC ENGN,12-1 OOKAYAMA 2 CHOME,MEGURO KU,TOKYO 152,JAPAN

来源：

POLYMER | 1992年 / 33卷 / 04期

关键词：

POLY(3-HYDROXYBUTYRATE); POLY(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE); COPOLYESTER; MOLECULAR MECHANICS; CONFORMATION; CRYSTAL;

D O I：

10.1016/0032-3861(92)90342-T

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The conformational properties of bacterially synthesized copolyesters of 3-hydroxybutyrate (3HB) and 3-hydroxyvalerate (3HV), P(3HB-co-3HV), have been studied using the MM2 molecular mechanics method. The MM2 calculation is applied to some model compounds having carefully selected initial geometries and finite chain length. The present calculation reveals that the isolated copolymer chain of P(3HB-co-3HV) has some types of stable 2(1) helices over the whole comonomer composition range, and that the distortion induced on the helical conformation is much greater when 3HV units are incorporated into the 3HB helix than when 3HB units are incorporated into the 3HV helix. On the basis of these results, the crystalline morphology is discussed.

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页码：817 / 822

页数：6

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