Dually responsive multi-network hydrogel of N-isopropylacrylamide copolymeric microgels embedded in poly(vinyl alcohol)

摘要：

　　To improve the performance of traditional hydrogels,dually responsive multi-network hydrogel was designed and fabricated in two steps.Firstly,temperature-and pH-responsive copolymeric microgel of N-isopropylacrylamide,methacrylic acid and polyethyleneglycol methacrylate were prepared via precipitation polymerization in poly(vinyl alcohol) (PVA) aqueous solution.Then glutaraldehyde was added to the microgel dispersion to build crosslinks among microgels and PVA,producing multi-network hydrogel with thermo-and pH-sensitivity.The morphology of the microgel and hydrogel was characterized by electron microscope technique.Swelling and deswelling behaviors show that the obtained hydrogels exhibit good temperature-and pH-sensitivity.The hydrogel shows rapid deswelling kinetics and approaches deswelling equilibrium in ~30min.

关键词： Microgel Hydrogel Temperature-sensitive pH-sensitive Precipitation polymerization

作者: Xiaomei Ma Yanhong Li Yanzhi Xia

作者单位: School of Chemical Engineering and Environmental Science, Qingdao University, Qingdao, 266071, China State Key Lab Cultivating Base for New Fiber Materials and Modern Textile, Qingdao, 266071, China

会议类型: 国际会议

会议名称: the 2012 International Conference on Frontiers of Advanced Materials and Engineering Technology (2012年先进材料与工程技术国际会议(FAMET 2012))

会议地点: 厦门

会议语种:英文

页码: 154-157

在线出版日期: 2012-01-04（万方平台首次上网日期，不代表论文的发表时间）