物理化学学报 >> 1995, Vol. 11 >> Issue (01): 83-86.doi: 10.3866/PKU.WHXB19950117

研究简报 上一篇    下一篇

St-DVB凝胶化反应动力学机理的模型理论研究

左榘, 陈天红, 吴佩强, 郑容   

  1. 南开大学化学系|天津 300071|北京大学化学系|北京 100871
  • 收稿日期:1993-10-09 修回日期:1994-01-18 发布日期:1995-01-15
  • 通讯作者: 左榘

A Study of Model Theory on Kinetics Mechanism of Crosslinking Copolymerization of Styrene with Divinylbenzene

Zuo Ju, Chen Tian-Hong, Wu Pei-Qiang, Zheng rong   

  1. Department of Chemistry,Nankai University,Tianjin 300071|Department of Chemistry,Peking University,Beijing 100871
  • Received:1993-10-09 Revised:1994-01-18 Published:1995-01-15
  • Contact: Zuo Ju

关键词: 凝胶化, 反应控制, 扩散控制, St-DVB

Abstract:

The model theory on kinetics mechanism of crosslinking copolymerization of stryene (St) with divinylbenzene (DVB) was verified by static and dynamic laser light scattering techniques. The exponential propagation rule of Rg, i.e. Rh=5.195 exp(0.872t)was observed, which agrees well with the model thory of the reaction controlled mechanism before gel point. Furthermore, from the point of view of the fractal with Df=1.597,and discussions, the reaction controlled mechanism was also confirmed. A new way based on modern technique and novel theory for studying reaction mechanism has also been suggested.

Key words: Gelation, Reaction control, Diffusion control, St-DVB