Toughening polylactide using epoxy-functionalized core-shell starch nanoparticles

Xinyi Dong; Zhenggui Wu; Yang Wang; Ting Li; Xuhui Zhang; Hao Yuan; Bihua Xia; Piming Ma; Mingqing Chen; Weifu Dong

Polymer Testing (Jan 2021)

Toughening polylactide using epoxy-functionalized core-shell starch nanoparticles

Xinyi Dong,
Zhenggui Wu,
Yang Wang,
Ting Li,
Xuhui Zhang,
Hao Yuan,
Bihua Xia,
Piming Ma,
Mingqing Chen,
Weifu Dong

Affiliations

Xinyi Dong: The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
Zhenggui Wu: The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
Yang Wang: The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
Ting Li: The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
Xuhui Zhang: Corresponding author.; The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
Hao Yuan: The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
Bihua Xia: The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
Piming Ma: The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
Mingqing Chen: The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
Weifu Dong: Corresponding author.; The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China

Journal volume & issue: Vol. 93
p. 106926

Abstract

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Polylactide (PLA) is one of the most attractive biodegradable polymers owing to advantages such as high mechanical properties, biocompatibility and renewable raw material. However, wide applications of PLA are hindered by its inherent brittleness. In this work, glycidyl methacrylate (GMA)-functionalized core-shell starch-based nanoparticles (GMA-CSS) were prepared via soap-free emulsion polymerization and melt-blended with PLA. The combination of GMA and core-shell structure imparted the PLA with superior toughness. Specifically, with addition of 10 wt% GMA-CSS, the elongation at break of the PLA was improved to 449%, which was 63 times higher than that of neat PLA. Besides, the calculated toughness of PLA/GMA–CSS–10 blends was as high as 130.71 MJ/m3, which was 54 times higher than that of neat PLA. The toughening mechanism was revealed by TEM, SEM and DMA results. We envision this work establishes an efficient yet novel toughening strategy to prepare high-performance PLA and will promote the wide application in agriculture field of PLA.

Published in Polymer Testing

ISSN: 0142-9418 (Print); 1873-2348 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Chemical technology: Polymers and polymer manufacture
Website: https://www.journals.elsevier.com/polymer-testing

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