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The Crystallization Behavior of L-Poly(lactic acid)/Polypropylene Blends: The Acceleration for Both L-Poly(lactic acid) and Polypropylene

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Abstract

For a polymer/polymer dismissible blend with two crystallizable components, the crystallization behavior of different components and the reciprocal influences between different crystals are interesting and important, but did not investigate in detail. In this study, the L-poly(lactic acid)/polypropylene (PLLA/PP) blends with different weight ratios were prepared by melt mixing and the crystallization behavior of the blends were investigated. Results showed that the crystalline structures of PLLA and PP were not altered by the composition. For the crystallization of PLLA, both the diffusion of chain segments and crystallization rate were enhanced under the existence of PP crystals. For the crystallization of PP, its crystallization rate was depressed under the existence of amorphous PLLA molecular chains. When the PP crystallized from the existence of PLLA crystals, although the diffusion rate of PP was reduced by PLLA crystals, the nucleation positions were obviously enhanced, which accelerated the formation of PP crystals. This investigation would supply more basic data for the application of PLLA/PP blend.

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Data Availability Statement

The related data (DOI: https://doi.org/10.1007/s10118-024-3104-x) for this paper is available in the (Data Repository of China Association for Science and Technology) database (https://www.scidb.cn/c/cjps).

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Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (Nos. 51403089 and 21574060), the Major Special Projects of Jiangxi Provincial Department of Science and Technology (No. 20114ABF05100), the Project of Jiangxi Provincial Department of Education (No. GJJ170229), the China Postdoctoral Science Foundation (No. 2019M652282), the Postdoctoral Science Foundation of Jiangxi Province (No. 2018KY37) and the Technology Plan Landing Project of Jiangxi Provincial Department of Education (No. GCJ2011-243).

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Authors and Affiliations

  1. College of Chemistry & Chemical Engineering and Nanofiber Engineering Center of Jiangxi Province, Jiangxi Normal University, Nanchang, 330022, China

    Shuang-Cheng Li, Wei-Jia Zhou, Wen-Jie Wu, Jun Shao, Shui-Liang Chen & Hao-Qing Hou

  2. National Engineering Research Center for Carbohydrate Synthesis/Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang, 330022, China

    Jun Shao, Shui-Liang Chen & Hao-Qing Hou

  3. Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, China

    Sheng Xiang

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  1. Shuang-Cheng Li
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  2. Wei-Jia Zhou
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The Crystallization Behavior of L-Poly(lactic acid)/Polypropylene Blends: The Acceleration for Both L-Poly(lactic acid) and Polypropylene

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Li, SC., Zhou, WJ., Wu, WJ. et al. The Crystallization Behavior of L-Poly(lactic acid)/Polypropylene Blends: The Acceleration for Both L-Poly(lactic acid) and Polypropylene. Chin J Polym Sci (2024). https://doi.org/10.1007/s10118-024-3104-x

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