物理化学学报 >> 1989, Vol. 5 >> Issue (06): 736-738.doi: 10.3866/PKU.WHXB19890619

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环形聚苯乙烯的稀溶液性质——Ⅱ. 第二维利系数

张浩; 贺智端   

  1. 中国科学院长春应用化学研究所高分子物理开放实验室
  • 收稿日期:1988-03-28 修回日期:1988-11-29 发布日期:1989-12-15
  • 通讯作者: 张浩

DILUTE SOLUTION PROPERTIES OF RING-SHAPED POLYSTYRENE Ⅱ. THE SECOND VIRIAL COEFFICIENTS

Zhang Hao; He Zhiduan   

  1. Laboratary of Polymer Physics Changchun Institute of Applied Chemistry; Academia Sinica; Changchun
  • Received:1988-03-28 Revised:1988-11-29 Published:1989-12-15
  • Contact: Zhang Hao

Abstract: Using a low angle laser light scattering photometer (LALLS) the second virial coefficients(A_2) of ring-shaped and linear polystyrene (RPS and LPS) samples were determined in both toluene and butanone solutions. The A_2 of RPS in the good solvent (toluene) is smaller than that of LPS with the same molecular weight, but in the poor solvent (butanone) these two are very close. For RPS in the molecular weight range of 4×10~4——2.2×10~5, we have
A_(2r)=1.28×10~(-2)M_w~(-0.283) (Toluene 25 ℃)
and A_(2r)=5.06×10~(-2)M_w~(-0.273) (Butanone 25 ℃).