Chinese Journal of Applied Chemistry ›› 1990, Vol. 0 ›› Issue (3): 57-59.

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STUDY OF SOL OF IRRADIATED POLYSTYRENE BY SEC-LALLS METHOD

Zhang Wanxi, Wang Mouzhi, Sun Jiazhen, Zhang Xuanqi, He Zhidua   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1989-03-18 Revised:1989-09-20 Published:1990-06-10 Online:1990-06-10

Abstract: The sol of γ-irradiated polystyrene has been investigated by using SEC-LALLScombination technology. The changes of the sol properties after and before gel point forpolystyrene were observed. The results show that in the early stage of irradiation mainlythe molecules of higher mloecular weight take part in crosslinking reaction. The concentration of low moleculat weight fractions Changes little before the gel point,but it changesgreatly near and after the gel point.

Key words: polystyrene, sol property, high energy irradiation, molecular weight distribution