高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (7): 721.

• 论文 • 上一篇    下一篇

淀粉-磺甲基化聚丙烯酰胺接枝共聚物的合成及性能

姚克俊, 王垚   

  1. 山东大学化学系
  • 收稿日期:1987-01-04 出版日期:1988-07-24 发布日期:1988-07-24
  • 通讯作者: 姚克俊

Syntheses and Properties of Graft Copolymer of Starch-Sulfomethylated Polyacrylamide

Yao Kejun, Wang Yao   

  1. Department of Chemistry, Shandong University, Jinan
  • Received:1987-01-04 Online:1988-07-24 Published:1988-07-24

摘要: 用淀粉-聚丙烯酰胺接枝共聚物(S-g-PAM)同多聚甲醛及亚硫酸钠反应,合成了淀粉-磺甲基化聚丙烯酰胺接枝共聚物(S-g-SPAM)。该磺化物的水溶液在试验浓度范围内(0.1~1.0%),为假塑性流体,对高岭土悬浮液的絮凝,由沉降速度,上层清液相对吸光度可知,S-g-SPAM(接枝链分子量为1.03×105,磺甲基化度30%)的絮凝能力优于相应的未磺化的S-g-PAM,也比聚丙烯酰胺(分子量2.5×106)强。

关键词: 接枝共聚物, 磺甲基化, 絮凝

Abstract: The graft copolymer of starch-sulfomethylated polyacrylamide(S-g-SPAM) was prepared by the sulfomethylation of graft copolyrner of starch-poly-acrylamide (S-g-PAM) with paraformaldehyde and sodium sulfite. The structure of the sul-fomethylated copolytner was identified by IR.The effects of their molecular structure on flocculation of Kaolin suspension were studied. The results are as follows.(1) The ability of flocculation of S-g-SPAMis better than that of S-g-PAM, HP AM, and much better than that of PAM.(2) S-g-SPAMshowed that the ability increases with increased molecular weight of grafted polymer.(3) Amid-degree of sulfomethylation (30%) is effective for Kaolin suspension.The rheological behaviour of S-g-SPAM aqueous solution showed pseudoplastic flow in the range of concentration of 0.1-1.0%. The metal ions (such as Na+, Mg2+, Ca2+) cause reduction in apparent viscosity (ηα), the order of influence is as follows:Na+<Mg2+<Ca2+.

Key words: Graft copolymer, Sulfomethylation, Flocculation

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