应用化学 ›› 1984, Vol. 0 ›› Issue (1): 32-35.

• 研究论文 • 上一篇    下一篇

甲苯溶剂中聚丁二烯基锂缔合度测定

于善普, 李晶洁, 许国津   

  1. 大连工学院化工系
  • 收稿日期:1983-10-18 出版日期:1984-03-10 发布日期:1984-03-10

DETERMINATION OF THE DEGREE OF ASSOCIATION OF POLYBUTADIENYL LITHIUM IN TOLUENE SOLUTION

Yu shenpu, Li Jinjie, Xu Guojin   

  1. Chemical Engineering Department Dalian Institute of Technology
  • Received:1983-10-18 Published:1984-03-10 Online:1984-03-10

摘要: 本工作是甲苯-丁二烯-丁基锂聚合体系研究的一部份。在甲苯溶剂中进行聚丁二烯基锂缔合度测定,在国内外文献上尚未见报导,通过实验可以看出,聚丁二烯基锂甲苯溶液的平均缔合度,在引发剂浓度>1×10-3mol/1范围内等于或大于2,此外用粘度法测定聚丁二烯基锂的缔合度时,如果剪切速度在12~450see-1之间,测量结果不受剪切的影响。

Abstract: In this paper the determination of the degree of association of polybu-tadienyl lithium in toluene as solvent has been reported. The experimentalresults show that the average degree of association of polybutadienyl lithiumin toluene is equal or greater than 2 (when the initiator concentratonis>1?10-3mol/l). The viscosity ratio is not found to be influenced by thevariation of shear velocity in viscolsimeter, when the degree of associationof polybutadienyl lithium is measured by viscosimetry.