Novel pH-Sensitive Hydrogel Fibers Based on Hydrolyzed Polyacrylonitrile and Gelatin

摘要：

Novel smart hydrogel fibers were prepared from a blend of hydrolyzed polyacrylonitrile (H-PAN) and gelatin (Ge) with various compositions. From the observation by SEM, it was found that H-PAN/Ge hydrogel fibers consisted of a porous structure. The dynamical elongation/contraction behavior was studied in response to a sudden pH change. The significant results obtained were as follows: (i) With an increase in the content of Ge, the hydrogel fibers exhibited excellent reversible pH-sensitive behavior in terms of response times in elongation and contraction. When W<,PAN>: W<,Ge> =3:7, the fibers showed the best response times at 0.95 s (elongation) and 1.14 s (contraction). (ii) The contraction response time of every hydrogel fiber was longer than its elongation response time. (iii) The equilibrium swelling elongation decreased gradually with the content of Ge increasing. These results were found to be explicable in terms of the surface morphology and polyampholytic properties of H-PAN/Ge hydrogel fibers.

关键词： Hydrolyzed Polyacrylonitrile Gelatin Hydrogel fiber pH-Sensitive

作者: YU Liwei XU Jianyan GU Lixia

作者单位: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 200051, P. R. China

会议类型: 国际会议

会议名称: 2007年先进纤维与聚合物国际会议

会议地点: 上海

会议语种:英文

页码: 583-586

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）