详细信息
羧甲基纤维素改性高吸水树脂合成及性能研究 被引量:9
Synthesis and Property of Superabsorbent Polymers Modified by Carboxymethyl Cellulose
文献类型:期刊文献
中文题名:羧甲基纤维素改性高吸水树脂合成及性能研究
英文题名:Synthesis and Property of Superabsorbent Polymers Modified by Carboxymethyl Cellulose
第一作者:王丹
机构:[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
年份:2007
卷号:27
期号:5
起止页码:6-10
中文期刊名:林产化学与工业
外文期刊名:Chemistry and Industry of Forest Products
收录:CSTPCD;;Scopus;CSCD:【CSCD_E2011_2012】;
基金:中国林业科学研究院科学技术发展基金重点课题(2004-Z-05);国家科技支撑计划项目(2006BAD18B10)
语种:中文
中文关键词:高吸水树脂;羧甲基纤维素;反相悬浮;接枝共聚
外文关键词:superabsorbent polymer;carboxymethyl cellulose;inverse suspension;graft copolymerization
分类号:TQ321
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657 g/g、吸0.9%NaCl溶液为116 g/g。
Acrylamide (AM) , and [ 2-(methylacL'yloyloxy) 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 andTween 80(3:1), 5 % of water phase, pH value 4, CMC dosage5 %, content of initiator( NaHSO3, ( NH4)2S2O8 )2.5 % , and erosslinking 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.
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