Effect of Physical Aging on Heterogeneity of Poly(<italic style="font-style: italic">ε</italic>-caprolactone) Toughening Poly(lactic acid) Probed by Nanomechanical Mapping

Bo-Wen Wang; Hao Liu; Jin Ying; Chun-Tai Liu; Chang-Yu Shen; Ya-Ming Wang

doi:10.1007/s10118-022-2806-1

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Effect of Physical Aging on Heterogeneity of Poly(ε-caprolactone) Toughening Poly(lactic acid) Probed by Nanomechanical Mapping

RESEARCH ARTICLE | Updated：2022-12-19

- Effect of Physical Aging on Heterogeneity of Poly(ε-caprolactone) Toughening Poly(lactic acid) Probed by Nanomechanical Mapping
- Chinese Journal of Polymer Science Vol. 41, Issue 1, Pages: 143-152(2023)
- Affiliations：
  
  a.Key Laboratory of Materials Processing & Mold (Zhengzhou University), Ministry of Education; National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China
  b.School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
- Author bio：
  
  hliu@zzu.edu.cn (H.L.)
  wangyaming@zzu.edu.cn (Y.M.W.)
- Funds：
- DOI：10.1007/s10118-022-2806-1
  CLC：
- Received：21 April 2022，
  
  Revised：2022-5-9，
  
  Accepted：16 May 2022，
  
  Online First：05 September 2022，
  
  Published：01 January 2023
- Accepted：
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Wang, B. W.; Liu, H.; Ying, J.; Liu, C. T.; Shen, C. Y.; Wang, Y. M. Effect of physical aging on heterogeneity of poly(ε-caprolactone) toughening poly(lactic acid) probed by nanomechanical mapping. Chinese J. Polym. Sci. 2023, 41, 143–152

Bo-Wen Wang, Hao Liu, Jin Ying, et al. Effect of Physical Aging on Heterogeneity of Poly(ε-caprolactone) Toughening Poly(lactic acid) Probed by Nanomechanical Mapping[J]. Chinese Journal of Polymer Science, 2023, 41(1): 143-152. DOI: 10.1007/s10118-022-2806-1.
Wang, B. W.; Liu, H.; Ying, J.; Liu, C. T.; Shen, C. Y.; Wang, Y. M. Effect of physical aging on heterogeneity of poly(ε-caprolactone) toughening poly(lactic acid) probed by nanomechanical mapping. Chinese J. Polym. Sci. 2023, 41, 143–152 DOI： 10.1007/s10118-022-2806-1.

Bo-Wen Wang, Hao Liu, Jin Ying, et al. Effect of Physical Aging on Heterogeneity of Poly(ε-caprolactone) Toughening Poly(lactic acid) Probed by Nanomechanical Mapping[J]. Chinese Journal of Polymer Science, 2023, 41(1): 143-152. DOI: 10.1007/s10118-022-2806-1. DOI：

摘要

Physical aging enhances the microscopic Young’s modulus and its distribution of PLA matrix

resulting in a highly heterogeneous response of the PLA/PCL blend to external stress and affecting the mechanical properties of the PLA phase under different extensions.

Abstract

Poly(lactic acid) (PLA) is a promising bio-based environmentally-friendly plastic. Nevertheless

the physical aging-induced brittleness of PLA limits its widespread applications. Blending with immiscible ductile polymer is an effective way to toughen PLA. However

the underlying details of the toughening mechanism and

in particular

the effect of physical aging are not well understood. Herein

atomic force microscopy (AFM) based nanomechanical mapping technology was utilized to visualize the differences in the deformation mechanisms between unaged and aged PLA/poly(

-caprolactone) (PCL) blend upon uniaxial drawing. Results show that physical aging has a significant effect on the microscopic Young’s modulus and its distribution of PLA matrix

resulting in a highly heterogeneous response of the PLA/PCL blend to external stress and affecting the mechanical properties of the PLA phase under different extensions. This work provides a new experimental basis for understanding the effect of physical aging on the mechanical properties of PLA-based materials.

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Effect of Physical Aging on Heterogeneity of Poly(ε-caprolactone) Toughening Poly(lactic acid) Probed by Nanomechanical Mapping

DOI：10.1007/s10118-022-2806-1

摘要

Abstract

关键词

Keywords

references