高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (4): 639.

• 论文 • 上一篇    下一篇

丙烯酰胺-丙烯酸钠共聚物的键结构和光散射研究

薄淑琴, 周子南, 郝克君, 杨虹, 吴盛容   

  1. 中国科学院长春应用化学研究所, 高分子物理开放研究实验室, 长春, 130022
  • 收稿日期:1994-08-26 修回日期:1994-12-28 出版日期:1995-04-24 发布日期:1995-04-24
  • 通讯作者: 薄淑琴,女,52岁,研究员.
  • 作者简介:薄淑琴,女,52岁,研究员.
  • 基金资助:

    国家自然科学基金

The Chain Structure and Light Scattering Studies for Acrylamide-Sodium Acrylic Acid(AM-AA)Copolymers

BO Shu-Qin, ZHOU Zi-Nan, HAO Ke-Jun, YANG Hong, WU Shen-Rong   

  1. Polymer Physics Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022
  • Received:1994-08-26 Revised:1994-12-28 Online:1995-04-24 Published:1995-04-24

PDF (PC)

被引次数

2

摘要： 用溶液聚合方法制备了一组单体含量相同、分子量不同的丙烯酰胺-丙烯酸钠(AM-AA)共聚物样品,用13CNMR和常规光散射方法进行了表征。该组样品的化学组成是均一的(AA摩尔含量16.9±1.1%),AA单体在大分子链中的序列分布为孤立、无规的,聚电解质在盐水体系中的光散射理论适用于共聚物在0.12mol/LNaCl水溶液体系。用恒化学位下的折光指数增量代替恒盐组成的折光指数增量,可从一次常规光散射实验分别求得共聚物样品的真实、第二维利系数A2和均方旋转半径〈R2〉z,其关系为:A2=0.0619Mw-0.21,〈R2〉z1/2=0.0210Mw0.54.

关键词: 水溶性高分子, 丙烯酰胺共聚物, 13C核磁共振, 光散射

Abstract: Aset of AM-AAcopolymer samples with the same comonomer content and differ ent average molecular weight have been chracterized by 13CNMR and light scattering methods in this paper.The chemical composition(comonomer AA,mole content 16.9±1.1%)of these samples is uniform, the sequence of AA in the macromolecular chain is of alone and random distribution and the light scattering theory from polyelectrolyte in added-salt solutions is suitable for the AM-AA copolymers-0.12 mol/L NaCl water systems. The actual values of Mw,the second Virial coefficient A2and the mean square radius of gyration〈R2〉zfor the studied samples have been obtained,The relationships between the molecular parameters are as follows:A2=0.0619Mw-0.21,〈R2〉z1/2=0.0210Mw0.54.

Key words: Water soluble polymer, Acrylamide copolymer, 13CNMR, Light scattering

TrendMD: