Chinese Journal of Applied Chemistry ›› 2024, Vol. 41 ›› Issue (4): 529-537.DOI: 10.19894/j.issn.1000-0518.230345

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Preparation and Properties of Highly Toughened Poly(lactic acid)/ Ethylene-Butyl Acrylate-Glycidyl Methacrylate Graft Copolymer Blends

Zheng ZHOU, Yi-Wei XIA, Jie JIN, Song-Qi ZHENG, Si-Yu ZHOU, Gui-Yan ZHAO()   

  1. School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun 113001,China
  • Received:2023-11-02 Accepted:2024-03-12 Published:2024-04-01 Online:2024-04-28
  • Contact: Gui-Yan ZHAO
  • About
  • Supported by:
    the Scientific Research Fund of Liaoning Provincial Education Department(LJKMZ20220733)


This article introduces a catalyst, (N,N-dimethyl-octadecylamine, DMSA), into the blend of poly(lactic acid) (PLA) and ethylene-butyl acrylate-glycidyl methacrylate graft copolymer (EBA-GMA), to improve the impact toughness of the PLA/EBA-GMA (70/30) blend system through the promotion of in-situ reaction between PLA and EBA-GMA. The influence of DMSA content on the mechanical properties of the blend system was investigated. The results show that the impact strength of the PLA/EBA-GMA (70/30) blend without DMSA is only 10.9 kJ/m2. When the content of DMSA is 0.5%, the impact strength of the PLA/EBA-GMA (70/30) blend reaches as high as 63.1 kJ/m2. Structural and morphological characterizations indicate that the addition of a small amount of DMSA effectively promotes the reactivity between epoxy groups on EBA-GMA and terminal groups of PLA, thereby enhancing the impact toughness of the PLA/EBA-GMA blend.

Key words: Poly(lactic acid), Ethylene-butyl acrylate-glycidyl methacrylate graft copolymer, Catalyst, Toughening

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