Synthesis and Characterization of Novel Rapid Responsive Laponite XLS/PNIP AAm Nanocomposite Hydrogels by HCI Solution Posttreatment
A series of high clay content Laponite XLS/poly (N- isopropylacrylamide) (PNIPAAm) nanocomposite hydrogels (S-N gels) have been successfully prepared by in-situ ultraviolet (UV) initiated polymerization. It was found that the deswelling rate and swelling ratio of S-N gels could be greatly increased by HCl solution posttreatment. The effects of HCl solution posttreatment on swelling/deswelling behaviors of S-N gels have been investigated. The results indicate that the Laponite XLS/PNIPAAm nanocomposite hydrogels with HCl solution posttreatment (S-N-H gels) exhibit rapid deswelling response rate, much faster than that of any other reported S-N gels. Also, the swelling ratio of S-N-H gels becomes higher with increasing the HCl solution posttreatment time.
PNIPAAm clay HCl deswelling rate swelling ratio
MA Yun LIU Yang JIANG Yongmei YU Hao ZHU Meifang
State Key Lab for Modification of Chemical Fiber and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, P. R. China
国际会议
上海
英文
992-994
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）