羧甲基纤维素/聚乙二醇/丙烯酸高吸水性复合材料的性能测试  

Performance Testing of Carboxymethyl Cellulose/Poly(ethylene glycol)/Acrylic Acid Superabsorbent Composite

作　　者：俞洁[1] 杨格格[1] 庞二牛 李芸[1] 杨武[1] 陆泉芳[2] 

机构地区：[1]西北师范大学化学化工学院,甘肃兰州730070 [2]西北师范大学学报编辑部,甘肃兰州730070

出　　处：《精细化工》2013年第12期1353-1358,共6页Fine Chemicals

基　　金：国家自然科学基金(21367023);甘肃省自然科学基金(1208RJZA161;1308RJZA144);西北师范大学青年教师科研能力提升计划(NWNU-LKQN-10-16;NWNU-LKQN-12-9)~~

摘　　要：在水溶液中,以丙烯酸(AA)、羧甲基纤维素(CMC)和聚乙二醇(PEG)为原料,N,N'-亚甲基双丙烯酰胺(MBA)为交联剂,用辉光放电电解等离子体(GDEP)技术引发制备羧甲基纤维素/聚乙二醇/丙烯酸(CMC/PEG/AA)高吸水性复合材料。考察了温度、pH、盐浓度对复合材料平衡溶胀率的影响,初步研究了复合材料对染料亚甲基蓝的吸附行为。结果表明,CMC/PEG/AA高吸水性复合材料在30℃蒸馏水中的最大溶胀率达到1 115 g/g;该复合材料具有pH敏感性、盐敏感性和可逆溶胀-消溶胀开关行为;其对亚甲基蓝的吸附量可达1 878.8 mg/g,吸附行为遵循动力学拟二级模型。A carboxymethyl cellulose/poly （ethylene glycot）/acrylic acid （CMC/PEG/AA） superabsorbent composite was prepared in aqueous solution using glow-discharge electrolysis plasma （GDEP） induced eopolymerization of carboxymethyl cellulose （ CMC ）, poly （ ethylene glycol ） （PEG） and acrylic acid （AA）, in which N, N＇-methylenebisaerylamide （MBA） was used as a crosslinker. The influences of temperature ,various pH values and sahs solutions on the equilibrium swelling ratio were studied in detail. The adsorption of methylene blue （MB） on the CMC/PEG/AA was tentatively investigated. The results show that the maximum equilibrium swelling ratio of CMC/PEG/AA in distilled water was 1 115 g,/g at 30℃ The CMC/PEG/AA superabsorbent composite was responsive to pH and salts, and it had excellent on-off switching behavior as reversible swelling and deswelling. In addition, the maximum adsorption capacity of CMC/PEG/AA for MB was 1 878.8 mg/g. The adsorption kinetics fitted the pseudo-second-order model.

关 键 词：羧甲基纤维素 聚乙二醇 丙烯酸 高吸水性复合材料 平衡溶胀率 吸附 功能材料 

分 类 号：TQ322.91[化学工程—合成树脂塑料工业]