降级(电信)
结晶度
动力学
材料科学
果胶酶
复合数
纤维素酶
乳酸
纤维
复合材料
化学
化学工程
酶
有机化学
生物
电信
物理
量子力学
计算机科学
细菌
遗传学
工程类
作者
Zixuan Chen,Ding Ding,Tao Yu,Weidong Yang,Qian Li,Yan Li
标识
DOI:10.1016/j.coco.2022.101227
摘要
The jute fiber reinforced poly (lactic acid) (PLA) composite renders a complete bio-degradable characteristic with relative remarkable mechanical properties, while it is strongly sensitive to the enzyme environments. To elaborate the enzymatic degradation mechanism of the jute/PLA composites, this study performed a 35 days degradation in an enzyme solution containing protease K, cellulase, ligninase, and pectinase. The changes of water absorption, crystallinity, molecular weight, morphologies, chemical compositions during enzymatic degradation were experimentally evaluated. We divided the total degradation process into three stages according to the primary degradation targets: the macromolecular chains of PLA, the fiber-matrix interfaces, and the jute fiber. The degradation kinetics was proposed based on the Michaelis–Menten kinetics approach. The elucidation of enzymatic degradation mechanisms of jute/PLA composite is meaningful for improving the application prospects of the bio-degradable green materials.
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