INCREASED SPHERULITIC GROWTH RATES OF SEMICRYSTALLINE POLYMER DUE TO ENHANCED LIMITED LOCAL CHAIN SEGMENTAL MOBILITY AT THE INTERFACE OF DOUBLE-LAYER THIN FILMS

Ya-qiong Zhang; Zhi-gang Wang

doi:10.1007/s10118-013-1326-4

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INCREASED SPHERULITIC GROWTH RATES OF SEMICRYSTALLINE POLYMER DUE TO ENHANCED LIMITED LOCAL CHAIN SEGMENTAL MOBILITY AT THE INTERFACE OF DOUBLE-LAYER THIN FILMS

Special Issue: In Memory of Prof. Bingzheng Jiang | Updated：2023-01-03

- INCREASED SPHERULITIC GROWTH RATES OF SEMICRYSTALLINE POLYMER DUE TO ENHANCED LIMITED LOCAL CHAIN SEGMENTAL MOBILITY AT THE INTERFACE OF DOUBLE-LAYER THIN FILMS
- Chinese Journal of Polymer Science Vol. 31, Issue 9, Pages: 1276-1283(2013)
- Affiliations：
  
  CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
- Author bio：
  
  **Zhi-gang Wang (王志刚), E-mail: zgwang2@ustc.edu.cn
- Funds：
- DOI：10.1007/s10118-013-1326-4
  CLC：
- Received：06 April 2013，
  
  Revised：2013-05-17，
  
  Accepted：04 June 2013，
  
  Published：2013-09
- Accepted：
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Ya-qiong Zhang, Zhi-gang Wang. INCREASED SPHERULITIC GROWTH RATES OF SEMICRYSTALLINE POLYMER DUE TO ENHANCED LIMITED LOCAL CHAIN SEGMENTAL MOBILITY AT THE INTERFACE OF DOUBLE-LAYER THIN FILMS[J]. Chinese Journal of Polymer Science, 2013, 31(9): 1276-1283.
DOI：

Ya-qiong Zhang, Zhi-gang Wang. INCREASED SPHERULITIC GROWTH RATES OF SEMICRYSTALLINE POLYMER DUE TO ENHANCED LIMITED LOCAL CHAIN SEGMENTAL MOBILITY AT THE INTERFACE OF DOUBLE-LAYER THIN FILMS[J]. Chinese Journal of Polymer Science, 2013, 31(9): 1276-1283. DOI： 10.1007/s10118-013-1326-4.

摘要

Abstract

In this work the nucleation and growth of spherulites for the below polylactide (PLA) layer in poly(

-caprolactone)/polylactide (PCL/PLA) double-layer films during isothermal crystallization at various temperatures above the melting point of PCL have been investigated by using polarized optical microscopy (POM). It is revealed that two types of spherulitic morphologies are observed in PCL/PLA double-layer films. One is the well defined highly birefringent spherulites

and the other one is the coarse spherulites. It is interesting to find that the spherulitic growth rate of the coarse spherulites is higher than that of the well defined spherulites. It is thought that the coarse spherulites nucleate and grow with the assistance of the interfaces between the PCL and PLA layers

and the well defined highly birefringent spherulites only nucleate and grow in the PLA layer.

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