The biodegradation of amorphous and crystalline regions in film-blown poly(ε-caprolactone)

被引：141

作者：

Eldsäter, C ^{[1
]}

Erlandsson, B ^{[1
]}

Renstad, R ^{[1
]}

Albertsson, AC ^{[1
]}

Karlsson, S ^{[1
]}

机构：

[1] Royal Inst Technol, Dept Polymer Technol, SE-10044 Stockholm, Sweden

来源：

POLYMER | 2000年 / 41卷 / 04期

关键词：

polycaprolactone; biodegradation; surface erosion;

D O I：

10.1016/S0032-3861(99)00278-5

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 surface erosion of films of poly(epsilon-caprolactone) (PCL) in compost, in anaerobic sewage sludge and by Aspergillus fumigatus was compared with chemical hydrolysis (23 and 50 degrees C). Biodegraded samples displayed grooves or cracks arranged in parallel, whereas samples exposed to an abiotic environment showed no surface changes. Differences in micro-flora together with the initial morphology of the sample resulted in different mechanisms of erosion. The degradation in compost resulted in parallel grooves or cracks, while A. fumigatus produced a spherulitic erosion pattern. A preferential degradation in the amorphous parts produced low-molar mass fractions with lengths corresponding to one, two or several times the thickness of the crystal lamellae. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：1297 / 1304

页数：8

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