Improved film properties of radiation-treated medium-chain-length poly(hydroxyalkanoates)

被引：16

作者：

Ashby, RD ^{[1
]}

Foglia, TA ^{[1
]}

Liu, CK ^{[1
]}

Hampson, JW ^{[1
]}

机构：

[1] ARS, USDA, Eastern Reg Res Ctr, Wyndmoor, PA 19038 USA

来源：

BIOTECHNOLOGY LETTERS | 1998年 / 20卷 / 11期

关键词：

gamma-irradiation; crosslinked poly(hydroxyalkanoates); film properties; Pseudomonas resinovorans; triacylglycerols;

D O I：

10.1023/A:1005411106279

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Medium-chain-length poly(hydroxyalkanoates) (mcl-PHAs) were synthesized from coconut oil (PHA-C), tallow (PHA-T), and soybean oil (PHA-S) by bacterial fermentation using Pseudomonas resinovorans as the producer strain. Films were solution-cast and subjected to 50 kGy of gamma-irradiation. This resulted in crosslink formation based on the number of olefinic groups present in the polymer side-chains. In each case, radiation improved the tensile strength (104% and 63%), percent elongation (49% and 13%), and Young's modulus (30% and 76%) of PHA-C and PHA-T films, respectively. The greatest effect was on PHA-S, which was converted from an amorphous, liquid-like material to a solid elastomeric film.

引用

页码：1047 / 1052

页数：6

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