摘要
采用自由基引发聚合制备了具有pH敏感性的聚乙烯醇(PVA)/丙烯酸(AA)共聚水凝胶,研究了PVA/AA水凝胶的溶胀动力学性能,在pH2-12范围内考察了PVA/AA水凝胶的pH敏感性。在pH=7时,PVA/AA水凝胶经过大约8小时的溶胀达到溶胀平衡,平衡溶胀率达到878g/g,当pH由4变化到7或由7变化到12时,PVA/AA水凝胶溶胀行为随水溶液pH有较大变化,表现出明显的pH敏感性。
Poly（vinyl alcohol）/acrylic acid（PVA/AA） copolymer hydrogel was prepared by free radical solution polymerization. The swelling kinetics of thehydrogel was investigated. The pH sensitive properties of the hydrogel were studied in the pH range from 2 to12. The equilibrium swelling ratio of the PVA/AA hydrogel was 878g/g after the hydro-gel was immersed in an aqueous solution at pH 7 for about 8 hours. The equilibrium swelling ratio of the hydrogel in an a-queous solution changed obviously in the pH range from 4 to 12. The swelling behavior of the hydrogel exhibited distinct pH-responsability.
出处
《化工新型材料》
CAS
CSCD
北大核心
2013年第2期53-55,共3页
New Chemical Materials
基金
中央高校基本科研业务费专项资金资助(2011D11304)
科技部公益性行业科研专项(GYHY200706036)
研究生课程建设资助项目(Y201002011?)
研究生课程建设资助项目(Y201002011)
上海市重点学科建设资助项目(B604)
上海市重点学科建设项目(B604)
