The biodegradation of amorphous and crystalline regions in film-blown poly(ε-caprolactone)
The biodegradation of amorphous and crystalline regions in film-blown poly(ε-caprolactone)
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DOI：
10.1016/s0032-3861(99)00278-5
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发表时间：
2000-02-01
期刊：
影响因子：
4.6
通讯作者：
Karlsson, S
中科院分区：
文献类型：
--
作者：
Eldsäter, C;Erlandsson, B;Karlsson, S
膜的聚（ε-己内酯）（PCL）在堆肥中，在厌氧污水污泥和烟曲霉的表面侵蚀进行了比较与化学水解（23和50 ℃）。生物降解的样品显示出平行排列的凹槽或裂缝，而暴露于非生物环境的样品则没有表面变化。微生物区系的差异以及样品的初始形态导致了不同的侵蚀机制。堆肥中的降解导致平行的沟槽或裂缝，而A。烟曲霉产生了球晶侵蚀模式。在无定形部分的优先降解产生低摩尔质量分数的长度对应于一个，两个或几个倍的厚度的晶体lamicum。(C)1999爱思唯尔科技有限公司。保留所有权利。
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.