CHEMICAL MODIFICATION OF BACTERIAL ELASTOMERS .1. PEROXIDE CROSS-LINKING

被引：66
作者：
GAGNON, KD
LENZ, RW
FARRIS, RJ
FULLER, RC
机构：
[1] UNIV MASSACHUSETTS, DEPT POLYMER SCI & ENGN, AMHERST, MA 01003 USA
[2] UNIV MASSACHUSETTS, DEPT BIOCHEM & MOLEC BIOL, AMHERST, MA 01003 USA
来源：
POLYMER | 1994年 / 35卷 / 20期
关键词：
PEROXIDE CROSS-LINKING; PSEUDOMONAS OLEOVORANS; MICROBIAL POLYESTER;
D O I：
10.1016/0032-3861(94)90093-0
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
An enhancement in the elastic response of two bacterial thermoplastic elastomers, poly(beta-hydroxyoctanoate), a saturated copolymer, and poly(beta-hydroxyoctanoic-co-undecylenic acid), an unsaturated copolymer, was attempted using peroxide crosslinking both with and without multifunctional co-agents. Sol-gel analysis verified that crosslinking had occurred and that crosslinking varied with peroxide type and concentration. A peroxide efficiency model suggested that the olefin group improved the peroxide efficiency and reduced the probability of chain scission. Differential scanning calorimetry showed that crosslinking could eliminate all crystallinity. The elastic response was improved as indicated by a reduced tensile set. In general, the crosslinked materials exhibited a decrease in tensile modulus, and a very low tensile strength and tear resistance.
引用
收藏
页码：4358 / 4367
页数：10
相关论文
共 24 条
[1]  
ASTM, 2009, ANN BOOK ASTM STANDA, V97
[2]   SEQUENCE DISTRIBUTION OF BETA-HYDROXYALKANOATE UNITS WITH HIGHER ALKYL-GROUPS IN BACTERIAL COPOLYESTERS [J].
BALLISTRERI, A ;
MONTAUDO, G ;
IMPALLOMENI, G ;
LENZ, RW ;
KIM, YB ;
FULLER, RC .
MACROMOLECULES, 1990, 23 (24) :5059-5064
[3]  
Bobear WJ, 1967, RUBBER CHEM TECHNOL, V40, P1560
[4]   PSEUDOMONAS-OLEOVORANS AS A SOURCE OF POLY(BETA-HYDROXYALKANOATES) FOR POTENTIAL APPLICATIONS AS BIODEGRADABLE POLYESTERS [J].
BRANDL, H ;
GROSS, RA ;
LENZ, RW ;
FULLER, RC .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1988, 54 (08) :1977-1982
[5]   EFFECTS OF POLYETHYLENE MOLECULAR-STRUCTURE ON PEROXIDE CROSS-LINKING OF LOW-DENSITY POLYETHYLENE [J].
BREMNER, T ;
RUDIN, A ;
HARIDOSS, S .
POLYMER ENGINEERING AND SCIENCE, 1992, 32 (14) :939-943
[6]  
BRYDSON JA, 1988, RUBBERY MATERIALS TH, P17
[7]  
Byers J. T., 1987, RUBBER TECHNOLOGY, P59
[8]  
CORAN AY, 1978, SCI TECHNOLOGY RUBBE, P325
[9]   CRYSTALLIZATION BEHAVIOR AND ITS INFLUENCE ON THE MECHANICAL-PROPERTIES OF A THERMOPLASTIC ELASTOMER PRODUCED BY PSEUDOMONAS-OLEOVORANS [J].
GAGNON, KD ;
LENZ, RW ;
FARRIS, RJ ;
FULLER, RC .
MACROMOLECULES, 1992, 25 (14) :3723-3728
[10]   THE MECHANICAL-PROPERTIES OF A THERMOPLASTIC ELASTOMER PRODUCED BY THE BACTERIUM PSEUDOMONAS-OLEOVORANS [J].
GAGNON, KD ;
LENZ, RW ;
FARRIS, RJ ;
FULLER, RC .
RUBBER CHEMISTRY AND TECHNOLOGY, 1992, 65 (04) :761-777
123