Microbial Degradation of Poly(3-Hydroxybutyrate-co-4-Hydroxybutyrate) in Soil

被引：20
|
作者：
Wen, Xing [1 ]
Lu, Xiuping [1 ]
机构：
[1] Tianjin Univ Sci & Technol, Coll Mat Sci & Chem Engn, Tianjin Key Lab Ind Microbiol, Tianjin 300457, Peoples R China
来源：
JOURNAL OF POLYMERS AND THE ENVIRONMENT | 2012年 / 20卷 / 02期
关键词：
Poly(3-hydroxybutyrate-co-4-hydroxybutyrate); Soil degradation; Weight loss; Molecular weight; Surface morphology; ENZYMATIC DEGRADATION; CRYSTALLIZATION KINETICS; MECHANICAL-PROPERTIES; EARLY-STAGE; POLY(3-HYDROXYBUTYRATE); POLY(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE); BIODEGRADATION; BACTERIAL; COPOLYESTERS; POLYHYDROXYALKANOATES;
D O I：
10.1007/s10924-011-0387-0
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The microbial degradation of poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P3/4HB) copolymers with different 4HB molar fraction were investigated in soil for 60 days. In the degradation process, changes in weight loss and molecular weight were periodically measured to determine the biodegradability; the surface morphology also was observed using scanning electron microscopy and polarizing optical microscopy. The results showed that the rate of degradation of P3/4HB depends strongly on its crystallinity and surface morphology. Enzymatic degradation, which proceeded via surface erosion mechanisms, was observed mainly during the degradation period in soil. The amorphous interspherulitic regions and crystal center were prone to degrade.
引用
收藏
页码：381 / 387
页数：7
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