Degradation of Structurally Modified Polylactide under the Controlled Composting of Food Waste-Reference-Cited by-同舟云学术

Degradation of Structurally Modified Polylactide under the Controlled Composting of Food Waste

Published:2023-10-07 Issue:19 Volume:15 Page:4017
ISSN:2073-4360
Container-title:Polymers
language:en
Short-container-title:Polymers

Author:

Trofimchuk Elena¹²^ORCID,Ostrikova Valeria³,Ivanova Olga¹^ORCID,Moskvina Marina¹,Plutalova Anna¹,Grokhovskaya Tatyana¹,Shchelushkina Anna³^ORCID,Efimov Alexander¹,Chernikova Elena¹^ORCID,Zhang Shenghua⁴,Mironov Vladimir³^ORCID

Affiliation:

1. Department of Chemistry, Moscow State University, Moscow 119991, Russia

2. Scientific Laboratory “Advanced Composite Materials and Technologies”, Plekhanov Russian University of Economics, Moscow 117997, Russia

3. Winogradsky Institute of Microbiology, Federal Research Center of Biotechnology, Russian Academy of Sciences, Moscow 119071, Russia

4. College of Harbour and Coastal Engineering, Jimei University, Xiamen 361021, China

Abstract

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 (Mn) 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.

Funder

Russian Science Foundation

Publisher

MDPI AG

Subject

Polymers and Plastics,General Chemistry

Link

https://www.mdpi.com/2073-4360/15/19/4017/pdf

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