The Stereocomplex Crystallites Improve the Stability of Biodegradable Poly(L-lactic acid)/Poly(D-lactic acid) Melt-Blown Nonwovens

Jin-Shuo Yu; Yue-Wei Huan; Hong-Wei Pan; Zhi-Gang Liu; Yan Zhao; Zhi-Yong Tan; Jun-Jia Bian; Hui-Li Yang; Hui-Liang Zhang

doi:10.1007/s10118-025-3272-3

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The Stereocomplex Crystallites Improve the Stability of Biodegradable Poly(L-lactic acid)/Poly(D-lactic acid) Melt-Blown Nonwovens

RESEARCH ARTICLE | Updated：2025-01-23

- The Stereocomplex Crystallites Improve the Stability of Biodegradable Poly(L-lactic acid)/Poly(D-lactic acid) Melt-Blown Nonwovens
- Chinese Journal of Polymer Science Vol. 43, Issue 2, Pages: 368-379(2025)
- Affiliations：
  
  a.Key Laboratory of Polymer Ecomaterials, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, Changchun 130022, China
  b.College of Material and Engineering, School of Chemical Engineering, Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, Changchun University of Technology, Changchun 130012, China
  c.Shandong Fufeng Fermentation Co., Ltd., Jinan 276600, China
  d.National Engineering Research Center of Corn Deep Processing, Jilin COFCO Biochemistry Co., Ltd., Changchun 130033, China
- Author bio：
  
  hwpan@ciac.ac.cn (H.W.P.)
  liuzhig@cofco.com (Z.G.L.)
- Funds：
- DOI：10.1007/s10118-025-3272-3
  CLC：
- Received：19 August 2024，
  
  Revised：2024-11-07，
  
  Accepted：20 November 2024，
  
  Online First：18 January 2025，
  
  Published：01 February 2025
- Accepted：
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Yu, J. S.; Huan, Y. W.; Pan, H. W.; Liu, Z. G.; Zhao, Y.; Tan, Z. Y.; Bian, J. J.; Yang, H. L.; Zhang, H. L. The stereocomplex crystallites improve the stability of biodegradable poly(L-lactic acid)/poly(D-lactic acid) melt-blown nonwovens. Chinese J. Polym. Sci. 2025, 43, 368–379

Jin-Shuo Yu, Yue-Wei Huan, Hong-Wei Pan, et al. The Stereocomplex Crystallites Improve the Stability of Biodegradable Poly(L-lactic acid)/Poly(D-lactic acid) Melt-Blown Nonwovens[J]. Chinese Journal of Polymer Science, 2025, 43(2): 368-379.
Yu, J. S.; Huan, Y. W.; Pan, H. W.; Liu, Z. G.; Zhao, Y.; Tan, Z. Y.; Bian, J. J.; Yang, H. L.; Zhang, H. L. The stereocomplex crystallites improve the stability of biodegradable poly(L-lactic acid)/poly(D-lactic acid) melt-blown nonwovens. Chinese J. Polym. Sci. 2025, 43, 368–379 DOI： 10.1007/s10118-025-3272-3.

Jin-Shuo Yu, Yue-Wei Huan, Hong-Wei Pan, et al. The Stereocomplex Crystallites Improve the Stability of Biodegradable Poly(L-lactic acid)/Poly(D-lactic acid) Melt-Blown Nonwovens[J]. Chinese Journal of Polymer Science, 2025, 43(2): 368-379. DOI： 10.1007/s10118-025-3272-3.

摘要

In this experiment

the performance of PLLA/PDLA melt-blown nonwovens was improved by SC crystallites. The thermal stability and water contact angle were enhanced. The SC crystallites were more resistant to degradation by proteinase K compared to neat PLLA.

Abstract

Poly(lactic acid) (PLA) is a biodegradable and eco-friendly polymer that is increasingly being incorporated into various applications in contemporary society. However

the limited stability of PLA-based products remains a significant challenge for their broader use in various applications. In this study

poly(L-lactic acid)(PLLA)/poly(D-lactic acid) (PDLA) melt-blown nonwovens were prepared by melt spinning. The structure

thermal properties

thermal stability

biodegradability and crystalline morphology of the melt-blown nonwovens were investigated. DSC and WAXD confirmed the formation o

f stereocomplex (SC) crystallites in the PLLA matrix. The storage modulus (

loss modulus (

'')

and complex viscosity (|

*|) of the PLLA/PDLA blend increased with an increase in SC crystallite content. The thermal degradation temperatures of PLLA/PDLA melt-blown nonwovens increased with the incorporation of SC crystallites

and the maximum rate of decomposition increased to 385.5 °C

thus enhancing the thermal stability. Compared with neat PLLA melt-blown nonwovens

the hydrophobicity of PLLA/PDLA melt-blown nonwovens was improved

and WCA increased to 139.7°. The SC crystallites were more resistant to degradation by proteinase K compared to neat PLLA. However

the degradation rate of PLLA/PDLA melt-blown nonwovens remained at a high level. This work provides an effective strategy to obtain high-performance PLLA melt-blown nonwovens.

关键词

Keywords

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