EFFECT OF CHEMICAL STRUCTURE OF POLYCARBONATES ON ENTANGLEMENT SPACING

Wei Ning; Wen-xiang Zhu; Bao-qing Zhang; Chun-cheng Li; Chen-yang Liu; Du-jin Wang

doi:10.1007/s10118-012-1144-0

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EFFECT OF CHEMICAL STRUCTURE OF POLYCARBONATES ON ENTANGLEMENT SPACING

PAPER | Updated：2023-01-03

- EFFECT OF CHEMICAL STRUCTURE OF POLYCARBONATES ON ENTANGLEMENT SPACING
- EFFECT OF CHEMICAL STRUCTURE OF POLYCARBONATES ON ENTANGLEMENT SPACING
- Chinese Journal of Polymer Science 2012年30卷第3期页码：343-349
- Affiliations：
  
  Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Author bio：
  
  **Chun-cheng Li (李春成), E-mail: lichch@iccas.ac.cn
  Chen-yang Liu (刘琛阳), E-mail: liucy@iccas.ac.cn
- Funds：
  
  National Natural Science Foundation of China(20874109);National High Technology Research and Development Program of China(2009AA033601);Chinese Academy of Sciences
- DOI：10.1007/s10118-012-1144-0
  中图分类号：
- 收稿：2011-11-22，
  
  修回：2011-12-15，
  
  录用：2011-12-28，
  
  纸质出版：2012-05
- Accepted：
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Wei Ning, Wen-xiang Zhu, Bao-qing Zhang, 等. EFFECT OF CHEMICAL STRUCTURE OF POLYCARBONATES ON ENTANGLEMENT SPACING[J]. Chinese Journal of Polymer Science, 2012,30(3):343-349.

Wei Ning, Wen-xiang Zhu, Bao-qing Zhang, et al. EFFECT OF CHEMICAL STRUCTURE OF POLYCARBONATES ON ENTANGLEMENT SPACING[J]. Chinese Journal of Polymer Science, 2012, 30(3): 343-349.
Wei Ning, Wen-xiang Zhu, Bao-qing Zhang, 等. EFFECT OF CHEMICAL STRUCTURE OF POLYCARBONATES ON ENTANGLEMENT SPACING[J]. Chinese Journal of Polymer Science, 2012,30(3):343-349. DOI： 10.1007/s10118-012-1144-0.

Wei Ning, Wen-xiang Zhu, Bao-qing Zhang, et al. EFFECT OF CHEMICAL STRUCTURE OF POLYCARBONATES ON ENTANGLEMENT SPACING[J]. Chinese Journal of Polymer Science, 2012, 30(3): 343-349. DOI： 10.1007/s10118-012-1144-0.

摘要

Abstract

The master curves of a series of aliphatic polycarbonates (APCs) with different lengths of methylene segments in the repeat unit were obtained by dynamic rheological measurements. The plateau modulus and entanglement molecular weight were determined and cross-checked by different methods. Though having distinct difference in chemical structure of repeat units

both APCs and bisphenol-A polycarbonates have the similar entanglement weight and entanglement spacing. On the other side

the plateau modulus decreases with increasing the length of the side group of aliphatic polycarbonates with different side-chain lengths in the literature. The packing length model can explain the relationship between chain structure and entanglements.

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