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林产化学与工业

林产化学与工业 ›› 2007, Vol. 27 ›› Issue (5): 6-10.

• 研究报告 • 上一篇    下一篇

羧甲基纤维素改性高吸水树脂合成及性能研究

王丹, 商士斌, 宋湛谦, 王瑀   

  1. 中国林业科学研究院 林产化学工业研究所;国家林业局 林产化学工程重点开放性实验室, 江苏 南京 210042
  • 收稿日期:2006-09-22 修回日期:1900-01-01 出版日期:2007-10-30 发布日期:2007-10-30
  • 通讯作者: 商士斌,研究员,从事天然资源化学利用研究与开发;E-mail:shangsb@hotmail.com

Synthesis and Property of Superabsorbent Polymers Modified by Carboxymethyl Cellulose

WANG Dan, SHANG Shi-bin, SONG Zhan-qian, WANG Yu   

  1. Institute of Chemical Industry of Forest Products, CAF;Key and Open Lab. on Forest Chemical Engineering, SFA, Nanjing 210042, China
  • Received:2006-09-22 Revised:1900-01-01 Online:2007-10-30 Published:2007-10-30

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摘要： 为了解决现有高吸水树脂(SAP)产品耐盐能力低、生物降解性差的缺点,利用反相悬浮聚合法,将羧甲基纤维素(CMC)与丙烯酰胺(AM)和甲基丙烯酰氧乙基三甲基氯化铵(MAETAC)接枝共聚,创新合成了分子中同时含有阳离子和非离子亲水基团的CMC改性高吸水树脂(ICAM).对合成反应的影响因素进行了探讨和研究,得出的反相悬浮聚合法制备ICAM树脂的优化工艺条件为油水比2:1,分散剂采用Span 60与Tween 80复配,二者质量比为3:1,总用量为水相质量的5%,CMC加入量为单体的5%,单体水溶液体系pH值为4,引发剂(NaHSO3、(NH4)2S2O8)用量为单体的2.5%,交联剂N,N'-亚甲基双丙烯酰胺(NMBA)用量为单体的0.5%,反应温度为65℃,反应时间2 h.该条件下得到的树脂产品吸蒸馏水倍率为657g/g、吸0.9%NaCl溶液为116g/g.

关键词: 高吸水树脂, 羧甲基纤维素, 反相悬浮, 接枝共聚

Abstract: Acrylamide (AM), and [2-(methylacryloyloxy)ethyl] trimethylammonium chloride (MAETAC) were grafted onto carboxymethyl cellulose (CMC) to prepare cellulose-modified cationic superabsorbent polymers (SAP) by inverse suspension copolymerization. Factors affecting water-absorbent capacity were investigated in detail, which were found to be as follows: ratio of oil to water 2:1, dosage of Span 60 and Tween 80(3:1), 5% of water phase, pH value 4, CMC dosage 5%, content of initiator(NaHSO3,(NH4)2S2O8)2.5%, and crosslinking agent 0.5% of the weight of monomers, reaction temperature 65℃, reaction time 2 h. The cellulose-modified cationic SAPs prepared under optimum conditions were obtained which have the absorbent capacity of 657 times their own weight in distilled water and 116 times in 0.9% salt solution under optimized synthesis condition.

Key words: superabsorbent polymer, carboxymethyl cellulose, inverse suspension, graft copolymerization

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