Mechanically Robust Polylactide Fibers with Super Heat Resistance <italic style="font-style: italic">via</italic> Constructing <italic style="font-style: italic">in situ</italic> Nanofibrils

Jun Lu; Li-Xiang Yi; Yong-Huan Zhao; Yang Meng; Peng-Xiang Yu; Juan-Juan Su; Jian Han

doi:10.1007/s10118-022-2880-4

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Mechanically Robust Polylactide Fibers with Super Heat Resistance via Constructing in situ Nanofibrils

RESEARCH ARTICLE | Updated：2023-05-26

- Mechanically Robust Polylactide Fibers with Super Heat Resistance via Constructing in situ Nanofibrils
- Chinese Journal of Polymer Science Vol. 41, Issue 6, Pages: 962-971(2023)
- Affiliations：
  
  a.College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, China
  b.The Key Lab of Industrial Textile Material and Manufacturing Technology, Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Author bio：
  
  sujuanjuan@zstu.edu.cn (J.J.S.)
  jianhan88@sina.cn (J.H.)
- Funds：
- DOI：10.1007/s10118-022-2880-4
  CLC：
- Received：04 August 2022，
  
  Revised：2022-9-19，
  
  Accepted：09 October 2022，
  
  Online First：12 December 2022，
  
  Published：01 June 2023
- Accepted：
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Lu, J.; Yi, L. X.; Zhao, Y. H.; Meng, Y.; Yu, P. X.; Su, J. J.; Han, J. Mechanically robust polylactide fibers with super heat resistance via constructing in situ nanofibrils. Chinese J. Polym. Sci. 2023, 41, 962–971

Jun Lu, Li-Xiang Yi, Yong-Huan Zhao, et al. Mechanically Robust Polylactide Fibers with Super Heat Resistance via Constructing in situ Nanofibrils[J]. Chinese Journal of Polymer Science, 2023, 41(6): 962-971. DOI: 10.1007/s10118-022-2880-4.
Lu, J.; Yi, L. X.; Zhao, Y. H.; Meng, Y.; Yu, P. X.; Su, J. J.; Han, J. Mechanically robust polylactide fibers with super heat resistance via constructing in situ nanofibrils. Chinese J. Polym. Sci. 2023, 41, 962–971 DOI： 10.1007/s10118-022-2880-4.

Jun Lu, Li-Xiang Yi, Yong-Huan Zhao, et al. Mechanically Robust Polylactide Fibers with Super Heat Resistance via Constructing in situ Nanofibrils[J]. Chinese Journal of Polymer Science, 2023, 41(6): 962-971. DOI: 10.1007/s10118-022-2880-4. DOI：

摘要

The

in situ

nanofibrils structure was introduced into the PLLA/HPDLA composite fibers. The abundant in-situ nanofibrils simultaneously improved the heat and hydrolysis resistance of the composite fibers. Under the action of extensional stress

the

in situ

nanofibrils further induced the nucleation and crystallization of PLLA molecular chains to form a hybrid shish-kebab structure

which played a significant mechanical self-reinforcing effect.

Abstract

All-PLA fibers with excellent comprehensive performance and recycling convenience are realized efficiently. High molecular weight poly(D-lactide) (HPDLA) is incorporated into poly(L-lactide) (PLLA) matrix to construct

in situ

nanofibrils structure by taking advantages of the microphase separation between HPDLA and PLLA. The tensile strength of HPDLA/PLLA composite fibers (HDL-8) is enhanced from 2.1 cN/dtex of neat PLLA-8 fibers up to 2.9 cN/dtex. Its boiling water shrinkage (BWS) and shrinkage in hot air (HAS) significantly decrease to 7.8% and 2.8%

respectively. The abundance of

in situ

nanofibrils creates a grille-like structure that is crucial for both heat and hydrolysis resistance. More strikingly

a hybrid shish-kebab structure induced by the

in situ

nanofibrils serves as a mechanical reinforcement. This work paves a new way for heat resistance and self-reinforcement modification of PLA materials.

关键词

Keywords

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Mechanically Robust Polylactide Fibers with Super Heat Resistance via Constructing in situ Nanofibrils

DOI：10.1007/s10118-022-2880-4

摘要

Abstract

关键词

Keywords

references