化学学报 ›› 1955, Vol. 21 ›› Issue (1): 72-77. 上一篇    下一篇

论文

聚己内醯胺沉淀度的测定

王有槐, 周锦贤, 王葆仁   

  1. 中国科学院有机化学研究所
  • 投稿日期:1954-12-14 发布日期:2013-06-04

THE PRECIRITABILITY OF POLYCAPROLACTAM

WANG YU-HUAI, CHOU CHING-HSIEN, WANG PAO-JEN(A. B. WANG)   

  1. Institute of Organic Chemistry, Academia Sinica
  • Received:1954-12-14 Published:2013-06-04

關於聚己內醯胺沉澱度的测定,作者建立了以苯酚-乙醇-水(2:1:1)為溶劑、丙酮為沉澱劑的方法。將0.2克聚己內醯胺溶於10毫升溶劑,在20°以丙酮滴定至初現混濁。

A method of the determination of the precipitability of polycaprolactam was established, using phenol-alcohol-water (volume ratio 2:1:1) as the solvent and acetone as the precipitant, 0.2 g of the polymer was dissolved in 10 ml of the solvent at 20℃ and titrated with acetone until turbidity began to appear. The calculated precipitabilities gave a linear function with the reciprocal of the molecular weights obtained from carboxyl group titration method.