AA／AMPS共聚物水凝胶的吸液性能.pdfVIP

维普资讯 学兔兔 化 工 进 展 2008年第27卷第5期 CHEMICAL 1NDUSTRY AND ENGINEERING PR0GRESS ·729· AA／AMPS共聚物水凝胶的吸液性能 廖列文 ，刘正堂 ，黎新明 ，崔英德 ( 西北工业大学材料科学与工程学院，陕西 西安710072； 仲恺农业技术学院绿色化工研究所， 广东 广州510225) 摘 要：研究了采用溶液聚合法制备的AA／AMPS共聚物Poly(AA．CO．AMPS)水凝胶的吸液性能，结果表明： 合成的凝胶材料在0．9％生理盐水中的吸液能力达到125 g／g以上；在溶液的pH值5～9时，水凝胶的吸水倍率与 最大吸液率的比值 (Q／Qlm )最大；水凝胶对NaBr溶液的吸收能力要好于对NaC1溶液的吸收能力；水凝胶对乙 醇、氨水溶液的吸收能力随溶液浓度的增高而增大，对尿素水溶液的吸收能力随溶液浓度的增高而减小。 关键词：耐盐性；水凝胶；AA；AMPS；吸液能力 中图分类号：O 636．1 文献标识码：A 文章编号：l000—6613(2008)05—0729—04 Study on absorbency of poly(AA--CO--AMPS)hydrogels LIAOLiewen ，LIUZhengtang ，LIXinming2，CUIYingde ( School ofMaterial Science and Engineering，Northwestem Polytechnical University，Xi’an 710072，Shaanxi，China： Institute ofGreen Chemical Engineering，Zhongkai University ofAgriculture and Technology，Guangzhou 510225， Guangdong，China) Abstract：Poly(AA．CO．AMPS)hydrogels were synthesized by the solution polymerization method， and the absorbency of the hydrogels was studied as wel1．The results showed that the absorbency of the hydrogels was more than 125 g／g in 0．9％NaC1 solution，and the value of Q／Qlmax was nearly 100 when the pH value was 5—9．The absorbency did not decrease as much as the change of pH value．The absorbency in NaBr solution was higher than in NaCl solution．Th e absorbency of the hydrogels increased with increasing concentration in ethanol solution or ammonia water，while decreased with increasing concentration in urea solution． Key words：salt tolerance；copolymer