Texture Induced by Molecular Weight Dispersity: Polymorphism within Poly(L-lactic acid) Spherulites

Da-Peng Hu; Min Chen; Yu-Hui Yang; Han-Ying Li

doi:10.1007/s10118-020-2464-0

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Texture Induced by Molecular Weight Dispersity: Polymorphism within Poly(L-lactic acid) Spherulites

ARTICLE | Updated：2020-08-17

- Texture Induced by Molecular Weight Dispersity: Polymorphism within Poly(L-lactic acid) Spherulites
- Chinese Journal of Polymer Science Vol. 38, Issue 12, Pages: 1365-1373(2020)
- Affiliations：
  
  Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
- Author bio：
  
  hanying_li@zju.edu.cn
- Funds：
- DOI：10.1007/s10118-020-2464-0
  CLC：
- Received：09 April 2020，
  
  Revised：2020-5-17，
  
  Accepted：01 June 2020，
  
  Online First：17 August 2020，
  
  Published：10 September 2020
- Accepted：
Scan QR Code
Hu, D. P.; Chen, M.; Yang, Y. H.; Li, H. Y. Texture induced by molecular weight dispersity: polymorphism within poly(L-lactic acid) spherulites. Chinese J. Polym. Sci. 2020, 38, 1365–1373

Da-Peng Hu, Min Chen, Yu-Hui Yang, et al. Texture Induced by Molecular Weight Dispersity: Polymorphism within Poly(L-lactic acid) Spherulites[J]. Chinese Journal of Polymer Science, 2020, 38(12): 1365-1373.
Hu, D. P.; Chen, M.; Yang, Y. H.; Li, H. Y. Texture induced by molecular weight dispersity: polymorphism within poly(L-lactic acid) spherulites. Chinese J. Polym. Sci. 2020, 38, 1365–1373 DOI： 10.1007/s10118-020-2464-0.

Da-Peng Hu, Min Chen, Yu-Hui Yang, et al. Texture Induced by Molecular Weight Dispersity: Polymorphism within Poly(L-lactic acid) Spherulites[J]. Chinese Journal of Polymer Science, 2020, 38(12): 1365-1373. DOI： 10.1007/s10118-020-2464-0.

摘要

Abstract

Poly(L-lactic acid) (PLLA) has drawn much attention due to its excellent medical and pharmaceutical applications for decades. As a semi-crystalline polymer

morphology and crystal structure of PLLA greatly determine its properties. Here

we demonstrate

for PLLA films

a non-conventional texture featuring two types of spherulites emerging in pairs to form a distinct nested structure where a small spherulite (~10 μm) is embedded in a large one (100 μm to 300 μm). In addition to the size

the molecular weight and polymorph are different in the large and small spherulites. Crystallographic

-form and relatively low molecular weight are identified in the large spherulites

while

关键词

Keywords

references

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Zhao-Hua Ren

Jia-Chen Zhang

Related Institution

School of Applied Chemistry and Engineering, University of Science and Technology of China

State Key Laboratory of Polymer Science and Technology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences

Key Laboratory of Yarn Materials Forming and Composite Processing Technology of Zhejiang Province, Jiaxing University

College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University

Shandong Fufeng Fermentation Co., Ltd.

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