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Effect of polycarbodiimide on the structure and mechanical properties of PLA/PBAT blends

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Abstract

In this paper, the effects of two epoxy chain extenders and polycarbodiimide on the mechanical properties, crystallization behavior, morphology and thermal stability of poly(L-lactic acid) (PLLA)/poly(butylene adipate-co-terephthalate) (PBAT) blends were studied. The addition of the chain extenders and polycarbodiimide could improve the compatibility of PLA and PBAT. Polycarbodiimide could effectively improve the mechanical properties of PLLA/PBAT blends. PLA/PBAT (50/50) blend with polycarbodiimide could be used as an additive to prepare PLA/PBAT (70/30) blend, and the obtained PLA/PBAT (70/30) blend had good compatibility and the elongation at break of 368%. Polycarbodiimide modified PLA/PBAT blend can be used as a compatibilizer for common PLA/PBAT blends to improve mechanical properties.

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Authors and Affiliations

  1. Shanghai Key Laboratory of Electrical Insulation and Thermal, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

    Meihua Ming, Yicheng Zhou & Yong Zhang

  2. Shanghai Jiu Lian Biotechnology Company, Shanghai, 200240, China

    Linda Wang & Feng Zhou

Authors
  1. Meihua Ming
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  2. Yicheng Zhou
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  3. Linda Wang
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  4. Feng Zhou
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  5. Yong Zhang
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Correspondence to Yong Zhang.

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Ming, M., Zhou, Y., Wang, L. et al. Effect of polycarbodiimide on the structure and mechanical properties of PLA/PBAT blends. J Polym Res 29, 371 (2022). https://doi.org/10.1007/s10965-022-03227-8

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