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化学学报
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化学学报 ›› 1960, Vol. 26 ›› Issue (1): 42-15. 上一篇    下一篇

研究简报

聚壬酰胺在苯酚-乙酸混合溶剂中的特性粘数-分子量关系

施良和1, 王天贵1, 余世诚1, 黄宝兴2, 牟必善3   

  1. 1. 中国科学院化学研究所;
    2. 中国科学院江西分院化学研究所;
    3. 中国科学院贵州分院化学研究所
  • 投稿日期:1959-07-07 发布日期:2013-06-03

THE INTRINSIC VISCOSITY-MOLECULAR WEIGHT RELATION OF NYLON-9

SHIH LIANG-HO1, WANG TIEN-KWEI1, Yu SHIH-CHENG1, HWANG POA-SHUN2, MOU BI-SHAN3   

  1. Institute of Chemistry, Academia Sinica
  • Received:1959-07-07 Published:2013-06-03

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413

被引次数

1

以苯酚为溶剂,甲醇为沉淀剂将三个聚壬酰胺试样(Mη 各为20400,12900和7100)分级沉淀.每一试样至少经过二次分级,共得到二十级份.取其中七个级份测定其数均分子量及特性粘数.粘度测定在25℃,溶剂用苯酚-乙酸(2∶1重量比).

Three nylon-9 samples with Mη= 20400, 12900 and 7100 were fractionated twice into 20 fractions using phenol as solvent and methanol as precipitant. Number average molecular weights Mη,were determined by titration of carboxyl groups in benzyl alcohol at 175℃ and viscosity measurements were carried out in phenol-acetic acid mixed solvent (2:1 by tveight) at 25℃.