Xu Xiao-Ding, Zhang Xian-Zheng, Yang Jie, Cheng Si-Xue, Zhuo Ren-Xi, Huang Ya-Qun
Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China.
Langmuir. 2007 Apr 10;23(8):4231-6. doi: 10.1021/la063485z. Epub 2007 Mar 10.
A novel class of functional poly(N-isopropylacrylamide) (PNIPAAm) hydrogels with pendent micellar structure resulting from the pending amphiphilic polymers was designed and prepared. The influence of the pendent micellar structure on the properties of the resulted PNIPAAm hydrogels was examined in terms of morphology observed by scanning electron microscopy, thermal response through differential scanning calorimetry, and deswelling/reswelling kinetics upon external temperature changes. In comparison with the conventional ones, the novel PNIPAAm hydrogels with pendent micellar structure presented improved temperature-sensitive properties, i.e., enlarged water containing capability at room temperature, as well as improved deswelling rate upon heating.
设计并制备了一类新型的具有侧链两亲聚合物导致的悬垂胶束结构的功能性聚（N-异丙基丙烯酰胺）（PNIPAAm）水凝胶。通过扫描电子显微镜观察形态、差示扫描量热法测定热响应以及研究外部温度变化时的去溶胀/再溶胀动力学，考察了悬垂胶束结构对所得PNIPAAm水凝胶性能的影响。与传统的PNIPAAm水凝胶相比，具有悬垂胶束结构的新型PNIPAAm水凝胶表现出改善的温度敏感性能，即在室温下具有更大的含水量，以及加热时具有更快的去溶胀速率。
