| 温敏性聚(N-异丙基丙烯酰胺)/聚丙烯酰胺互穿网络水凝胶 |
| |
| 引用本文： | 李彪,姜永梅,朱美芳,武永涛,任怀银.温敏性聚(N-异丙基丙烯酰胺)/聚丙烯酰胺互穿网络水凝胶[J].合成技术及应用,2008,23(3). |
| |
| 作者姓名： | 李彪 姜永梅 朱美芳 武永涛 任怀银 |
| |
| 作者单位： | 东华大学纤维材料改性国家重点实验室,上海,201620 |
| |
| 基金项目： | 高等学校科技创新工程重大项目 |
| |
| 摘 要： | 采用紫外引发法制备了物理交联的聚(N-异丙基丙烯酰胺)和化学交联聚丙烯酰胺为组分的互穿网络水凝胶。利用FFIR对所得的凝胶进行了结构分析;测定了该水凝胶在20℃时的溶胀率和50℃时的水保持率;利用DMA和DSC分别研究了水凝胶的储能模量随温度的变化及相转变行为。结果表明:与聚(N-异丙基丙烯酰胺)水凝胶相比,该水凝胶有较好的溶胀率;且具有超快的响应速率,如10 min内失去90%的水;其储能模量增加;虽然其相转变行为变弱,但临界溶解温度(LCST)有所提高。
|
| 关 键 词： | 聚(N-异丙基丙烯酰胺) 聚丙烯酰胺 互穿网络 粘土 快速响应 |
Poly(N-isopropylacrylamide)/poly(acrylamide)interpenetrating network hydrogels with temperature-sensitivity |
| |
| Li Biao,Jiang Yongmei,Zhu Meifang,Wu Yongtao,Ren Huaiyin.Poly(N-isopropylacrylamide)/poly(acrylamide)interpenetrating network hydrogels with temperature-sensitivity[J].Synthetic Technology and Application,2008,23(3). |
| |
| Authors: | Li Biao Jiang Yongmei Zhu Meifang Wu Yongtao Ren Huaiyin |
| |
| Affiliation: | Li Biao Jiang Yongmei Zhu Meifang Wu Yongtao Ren Huaiyin (State Key Laboratoryfor Modification of Chemical Fibers and Polymer Materials; Donghua University; Shanghai 201620; China); |
| |
| Abstract: | In this paper,Interpenetrating network hydrogels composing of physically cross-linked poly(N-isopropy- lacrylamide) and chemically cross-linked polyacrylamide,were prepared by ultraviolet irradiation polymerization.The structure of resultant IPN hydrogels was characterized by FTIR,the swelling ratio at 20℃and water retention at 50℃were measured gravimetrically,the dependence of storage modulus on temperature and phase transition behavior were in- vestigated by DMA and DSC.The results showed that:compared with poly(N-isopropylacrylamide) hydrngels,LPN hy- drogels exhibit increased swelling ratio,ultrafast response rate,such as losing water of 90% within 10 min,enhanced storage modulus,weak phase transition but increased LCST. |
| |
| Keywords: | poly(N-isopropylacrylamide) poly(acrylamide) interpenetrating network clay fast response |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
