物理化学学报 >> 1993, Vol. 9 >> Issue (05): 679-683.doi: 10.3866/PKU.WHXB19930520

研究简报 上一篇    下一篇

新型阳离子聚丙烯酰胺离解行为的研究

臧庆达; 李卓美   

  1. 中山大学高分子研究所，广州 510275
  • 收稿日期:1992-02-10 修回日期:1992-09-08 发布日期:1993-10-15
  • 通讯作者: 李卓美

Study on the Dissociation of A New Cationic Polyacrylamide

Zhang Qing-Da; Li Zhuo-Mei   

  1. Institute of Polymer Science, Zhongshan University, Guangzhou 510275
  • Received:1992-02-10 Revised:1992-09-08 Published:1993-10-15
  • Contact: Li Zhuo-Mei

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关键词: 聚丙烯酰胺, 阳离子聚电解质, 聚碱的离解

Abstract: A new kind of cationic polyacrylamide, PAm·MG, has been prepared by the modification of polyacrylamide (—CONH_z) with HCHO and dieyanodiamide. Three PAm·MG species with various degree of substitution (S) have been obtained by varying the ratio HCHO/-CONH_2. They are water-soluble and show effective floccu-lation for the active dyes. PAm·MG is a hydrochloride salt of weak polybase, whose dissociation depends on S, pH, and the concentration of added salt. η_(ap)/C of PAm·MG solution depends also on S and dissociation of the polymer, and on pH of solution as well. All these results are of significance in determining the optimum conditions for the synthesis and use of PAm·MG.

Key words: Polyacrylamide, Cationic polyelectrolete, Dissociation of polybase