Trofimchuk Elena, Ostrikova Valeria, Ivanova Olga, Moskvina Marina, Plutalova Anna, Grokhovskaya Tatyana, Shchelushkina Anna, Efimov Alexander, Chernikova Elena, Zhang Shenghua, Mironov Vladimir
Department of Chemistry, Moscow State University, Moscow 119991, Russia.
Scientific Laboratory "Advanced Composite Materials and Technologies", Plekhanov Russian University of Economics, Moscow 117997, Russia.
Polymers (Basel). 2023 Oct 7;15(19):4017. doi: 10.3390/polym15194017.
The degradation of polylactide (PLA) films of different structures under conditions of controlled composting has been studied. We have demonstrated that PLA underwent degradation within one month in a substrate that simulated standard industrial composting. Regardless of the initial structure of the samples, the number-average molecular weight (M) decreased to 4 kDa while the degree of crystallinity increased to about 70% after 21 days of composting. Addition of an inoculant to the standard substrate resulted in the accelerated degradation of the PLA samples for one week due to an abiotic hydrolysis. These findings have confirmed that industrial composting could solve the problem of plastic disposal at least for PLA.
研究了不同结构的聚乳酸（PLA）薄膜在可控堆肥条件下的降解情况。我们已经证明，PLA在模拟标准工业堆肥的底物中一个月内发生降解。无论样品的初始结构如何，堆肥21天后，数均分子量（M）降至4 kDa，而结晶度增加至约70%。向标准底物中添加接种剂会由于非生物水解导致PLA样品加速降解一周。这些发现证实，工业堆肥至少可以解决PLA的塑料处理问题。
Zotero 插件
