A BIODEGRADABLE RUBBER BY CROSS-LINKING POLY(HYDROXYALKANOATE) FROM PSEUDOMONAS-OLEOVORANS

被引:92
作者
DEKONING, GJM
VANBILSEN, HMM
LEMSTRA, PJ
HAZENBERG, W
WITHOLT, B
PREUSTING, H
VANDERGALIEN, JG
SCHIRMER, A
JENDROSSEK, D
机构
[1] UNIV GRONINGEN,DEPT BIOCHEM,GRONINGEN BIOTECHNOL CTR,9747 AG GRONINGEN,NETHERLANDS
[2] EINDHOVEN UNIV TECHNOL,CTR POLYMERS & COMPOSITES,5600 MB EINDHOVEN,NETHERLANDS
[3] GEORG AUGUST UNIV,INST MIKROBIOL,D-37077 GOTTINGEN,GERMANY
关键词
BIOPOLYMER; BIODEGRADATION; POLY(HYDROXYALKANOATE);
D O I
10.1016/0032-3861(94)90233-X
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Poly((R)-3-hydroxyalkanoate)s (PHAs) are bacterial storage polyesters, currently receiving much attention because of their potential application as biodegradable and biocompatible plastics. Among them are the PHAs from Pseudomonas oleovorans, which are semicrystalline elastomers. Their applicability is seriously limited by their low melting temperature as well as by their low crystallization rate. Both problems were overcome by crosslinking of unsaturated pendent groups, which were incorporated in the polymer by tailoring the carbon source for biosynthesis. Crosslinking was established by electron-beam irradiation and resulted in a true rubber with constant properties over a large temperature range from -20 to +170-degrees-C. Even after crosslinking, the material was still biodegradable. To our knowledge this is the first microbially produced biodegradable rubber.
引用
收藏
页码:2090 / 2097
页数:8
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