DEGREE OF BRANCHING OF THE HYPERBRANCHED POLYMERS RESULTED FROM AB2 POLYCONDENSATION WITH SUBSTITUTION EFFECT

Zhi-ping Zhou; De-yue Yan

doi:10.1007/s10118-011-1064-4

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DEGREE OF BRANCHING OF THE HYPERBRANCHED POLYMERS RESULTED FROM AB2 POLYCONDENSATION WITH SUBSTITUTION EFFECT

PAPER | Updated：2021-06-21

- DEGREE OF BRANCHING OF THE HYPERBRANCHED POLYMERS RESULTED FROM AB2 POLYCONDENSATION WITH SUBSTITUTION EFFECT
- DEGREE OF BRANCHING OF THE HYPERBRANCHED POLYMERS RESULTED FROM AB₂ POLYCONDENSATION WITH SUBSTITUTION EFFECT
- Chinese Journal of Polymer Science 2011年29卷第5期页码：569-574
- Affiliations：
  
  a.School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
  b.School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
- Author bio：
  
  **Zhi-ping Zhou (周志平), E-mail: zhouzp@ujs.edu.cn
- Funds：
  
  National Natural Science Foundation of China(20774038;21044003);fund of the State Key Laboratory of Metal Matrix Composites
- DOI：10.1007/s10118-011-1064-4
  中图分类号：
- 收稿：2010-08-31，
  
  修回：2010-10-08，
  
  录用：2010-10-18，
  
  纸质出版：2011
- Accepted：
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Zhi-ping Zhou, De-yue Yan. DEGREE OF BRANCHING OF THE HYPERBRANCHED POLYMERS RESULTED FROM AB2 POLYCONDENSATION WITH SUBSTITUTION EFFECT[J]. Chinese Journal of Polymer Science, 2011,29(5):569-574.

Zhi-ping Zhou, De-yue Yan. DEGREE OF BRANCHING OF THE HYPERBRANCHED POLYMERS RESULTED FROM AB₂ POLYCONDENSATION WITH SUBSTITUTION EFFECT[J]. Chinese Journal of Polymer Science, 2011, 29(5): 569-574. DOI: 10.1007/s10118-011-1064-4.
Zhi-ping Zhou, De-yue Yan. DEGREE OF BRANCHING OF THE HYPERBRANCHED POLYMERS RESULTED FROM AB2 POLYCONDENSATION WITH SUBSTITUTION EFFECT[J]. Chinese Journal of Polymer Science, 2011,29(5):569-574. DOI： 10.1007/s10118-011-1064-4.

Zhi-ping Zhou, De-yue Yan. DEGREE OF BRANCHING OF THE HYPERBRANCHED POLYMERS RESULTED FROM AB₂ POLYCONDENSATION WITH SUBSTITUTION EFFECT[J]. Chinese Journal of Polymer Science, 2011, 29(5): 569-574. DOI: 10.1007/s10118-011-1064-4. DOI：

摘要

Abstract

The analytical expressions of the various structural units and the average degree of branching for the hyperbranched polymers resulted from AB

polycondensation with substitution effect were derived by the kinetic mechanism. The reactivity difference between the B group in linear unit and that in terminal group has great effect on the molecular parameters of the products obtained. The concentration of terminal units has a maximum with the increase of the conversion of A groups (

). The higher the reactivity ratio (

) of linear B group to branched one is

the later the maximum appears and the larger it is. The degree of branching of the hyperbranched polymers obtained is controllable by adjusting the parameters of

and

which increases with increasing both

and

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