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林产化学与工业

林产化学与工业 ›› 2002, Vol. 22 ›› Issue (04): 1-4.

• 研究报告 •    下一篇

淀粉三元接枝复合型高吸水性树脂的合成及性能研究

龙剑英, 宋湛谦   

  1. 中国林业科学研究院, 林产化学工业研究所, 江苏, 南京, 210042
  • 收稿日期:2002-05-24 修回日期:1900-01-01 出版日期:2002-12-30 发布日期:2002-12-30

SYNTHESIS AND PROPERTY OF A WATER SUPERABOSORBENT OF POLY(STARCH-ACRYLIC ACID-ACRYLAMIDE) COMPLEX RESIN

LONG Jian-ying, SONG Zhan-qian   

  1. Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042, China
  • Received:2002-05-24 Revised:1900-01-01 Online:2002-12-30 Published:2002-12-30

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摘要： 本研究首次用亚硫酸氢钠和过硫酸铵组成的氧化还原引发剂,N,N-亚甲基二丙烯酰胺为交联剂,使淀粉三元接枝丙烯酸和丙烯酰胺在含有粘土的悬浮液中反应,制得淀粉复合型高吸水性树脂。性能测定发现,该树脂在5min内已吸水超过1000g/g,并且树脂的吸水能力随温度的升高而下降缓慢。该树脂在室温下可吸去离子水1800多倍且具有较好的凝胶强度。文中也讨论了淀粉形态、粘土种类、粘土用量和交联剂用量对吸水性树脂性能的影响。

关键词: 高吸水性树脂, 淀粉, 粘土, 接枝共聚

Abstract: Using sodium bisulfite and ammonium persulfate,N,N-methylene bisacrylamide as redox initiator and crosslinking agent respectively,a water superabsorbent capable of absorbing more than 1 800 g/g deionized water and possessing good gel strength was prepared by synthesizing grafted starch acrylic acid acrylamide in the clay suspension for the first time.More than 1 000 g deionized water has been absorbed by the superabsorbent in 5 min,and water absorbence of this superabsorbent decreased slowly with the increase of temperature.Influences of kinds of clay,configuration of starch and amounts of clay and crosslinking agent on the properties of the resin are also discussed.

Key words: superabsorbents, starch, clay, graft polymerization

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