河北大学学报(自然科学版) ›› 2009, Vol. 29 ›› Issue (6): 605-608.DOI: 10.3969/j.issn.1000-1565.2009.06.012

• • 上一篇    下一篇

A_a-B_bC_c型缩聚反应中的悬吊链

姚宁1,李元丰1,宋建民2,王云明2   

  1. 1.廊坊师范学院,物理与电子信息学院,河北,廊坊,065000; 2.河北农业大学,理学院,河北,保定,071001
  • 出版日期:2009-11-25 发布日期:2009-11-25
  • 基金资助:
    廊坊市科学技术研究与发展指导计划项目

Dangling Chains in the Polycondensation Reaction of A_a-B_bC_c Type

YAO Ning1,LI Yuan-feng1,SONG Jian-min2,WANG Yun-ming2   

  • Online:2009-11-25 Published:2009-11-25

摘要: 给出了A_a-B_bC_c型缩聚反应中形成的凝胶网络的悬吊链数目的2种不同的计算方法,并计算了A_a-B_bC_c型缩聚反应体系的悬吊链数目.结果表明,在反应初期,悬吊链主要呈树状结构,有很多分链,但是在反应后期基本没有分链.该计算结果为了解凝胶聚合物的黏弹性质提供了可能依据.

关键词: 缩聚反应, 凝胶网络, 悬吊链

Abstract: For the gel network formed in the polycondensation of A_a-B_bC_c type, two different methods are proposed to calculate the number of dangling chains. The corresponding numerical results are also presented by taking the A_4-B_2C_2 reaction system as an example. It is shown that at a low conversion, the dandling chains display mainly the treelike structure with many branched chains, but these branched chains decrease at a high conversion. The present result can provide a possible clue for understanding the viscoelastic properties of polymer gel material.

Key words: polycondensation reaction, gel network, dangling chains

中图分类号: