Toughening polylactide using epoxy-functionalized core-shell starch nanoparticles

• DOI: 10.1016/j.polymertesting.2020.106926
• Publication Date: 2020-10-23T16:04:22Z
• Authors: Xinyi Dong; Zhenggui Wu; Yang Wang; Ting Li; Xuhui Zhang; Hao Yuan; Bihua Xia; Piming Ma; Mingqing Chen; Weifu Dong
• Keywords: Glycidyl methacrylate; Biocompatibility; Emulsion polymerization

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 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 melt-blended with PLA. The combination GMA structure imparted superior toughness. Specifically, addition 10 wt% GMA-CSS, elongation at break was improved 449%, which 63 times higher than that neat Besides, calculated toughness PLA/GMA–CSS–10 blends 130.71 MJ/m3, 54 toughening mechanism revealed TEM, SEM DMA results. We envision work establishes an efficient yet novel strategy prepare high-performance will promote application in agriculture field