CJCU

Chem. J. Chinese Universities ›› 2001, Vol. 22 ›› Issue (S1): 249.

• Articles • Previous Articles     Next Articles

Laser Light Scattering Study on Fractal Behavior of Polystyrene Gelation

NIU Ai-Zhen1,2, AN Ying-Li1, RAN Shao-Feng2, LIANG De-Hai2, ZUO Ju1,2, HE Bing-Lin1   

  1. 1. State Key Laboratory of Functional Polymeric Materials for Adsorption and Separation, Tianjin 300071, China;
    2. Department of Chemistry, Nankai University, Tianjin 300071, China
  • Received:2001-07-31 Online:2001-12-31 Published:2001-12-31

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Abstract:

The fractal behavior of gelation of styrene (St) and divinylbenzene (DVB) free radical copolymerization was studied by using laser light scattering. The weight average molar mass (Mw) and the radius of gyration (Rg) of sols were used to monitor the gelation process by using the scaling laws of Mw and Rg with the reaction time t. On the basis of these scaling laws, one new method to obtain the gelation point time was reported.

Key words: Gelation time, Scaling law, Laser light scattering, Fractal behavior

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