PREPARATION AND PROPERTIES OF CLAY/POLY(N-ISOPROPYLACRYLAMIDE-co-A CRYL AMIDE) NANOCOMPOSITE HYDROGELS |
| |
作者单位: | [1]State Key Lab for Modification of Polymer Materials and Chemical FibersCollege of Material Sci. & Eng., Donghua University, Shanghai 200051, China [2]Institute of Macromolecular Chemistry and Textile Chemistry, Dresden University of Technology, Mommsenstr. 13, D-01069 Dresden, Germany |
| |
基金项目: | 国家高技术研究发展计划(863计划);国家高技术研究发展计划(863计划);上海市纳米专项基金 |
| |
摘 要: |
|
关 键 词: | 粘土 共聚物 水凝胶 纳米化合物 |
PREPARATION AND PROPERTIES OF CLAY/POLY(N-ISOPROPYLACRYLAMIDE-co-ACRYL AMIDE) NANOCOMPOSITE HYDROGELS |
| |
Authors: | LIU Xiaoli LIU Yang Zhang WEI JIANG Yongmei GU Chunju ZHU Meifang Adler HJ |
| |
Abstract: | A series of clay/poly(N-isopropylacrylamide-co-acrylamide) nanocomposite hydrogels (S-N-M gels) have been successfully prepared by in situ polymerization. The mechanical properties,swelling behavior of S-N-M gels and the transparency changes during polymerization of S-N-M gels have been systematically investigated. Compared to traditional hydrogeb, S-N-M gels show excellent tensile properties and their swelling ratio increases with increasing acrylamide (AAm) content. The results of stress relaxation indicate that the stress loss decreases with increasing AAm content. It was surprisingly found that the transparency during all S-N-M gel synthesis changes abruptly, and the changes become more abrupt with increasing N-isopropylacrylamide content. It was concluded that the fact may be related to the hydrophilicity of copolymers. The weaker the hydrophilicity of copolymer, the more apparent the transparency change during S-N-M gels polymerization. We believe the relationship between hydrophilicity of copolymer and transparency changes will help to design novel nanocomposite hydrogels. |
| |
Keywords: | Clay Copolymer Hydrogel Nanocomposite |
本文献已被 维普 万方数据 等数据库收录! |