【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。更多还原

【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.更多还原