静电纺丝制备纳米聚合物PNIPAAm功能纤维  

Nano Superfine Polymer(PNIPAAm)Fibrous by Electrospinning

作　　者：吴斌[1] 冀朋超[1] 徐涛[1] 雷华[1] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550025

出　　处：《塑料》2013年第2期97-99,共3页Plastics

基　　金：贵州大学大学生创新创业训练计划项目

摘　　要：智能材料通常指的是那些可以积极响应外部环境刺激或者可以对环境变化很敏感的材料。作为1种温敏材料,聚(N-异丙基丙烯酰胺)可以在29～38℃的最低临界转换温度(LCST)范围内快速地发生可逆的结构转变,这种可逆的结构改变使聚合物从亲水变成疏水,可以广泛应用在功能性纺织业、药物的控制释放及特种纤维等领域。静电纺丝是1种简单,方便的方法,可以用来制备直径只有几十纳米到几微米的纤维材料。文章研究了静电纺丝技术来制备纳米PNIPAAm纤维的方法。研究表明:通过静电纺丝的方法,可以成功制备直径在200 nm以下的PNIPAAm纤维;同时发现即使在纤维状态下,它在LCST温度下的可逆亲疏水转变依然可以很好地展现出来。Smart materials were those which were either active or responsive to environmental stimuli. As a thermally sensitive polymer, the aqueous solution of poly （N-isopropylacrylamide） （PNIPAAm） underwent fast, reversible switching around their lower critical solution temperature （LCST） of 29 ~ 38 ~C （ different with their structure）. These switchable materials may had wide applications in functional textiles, controllable drug release, and special fibers. Electrospinning was a simple,convenient technique for generating fibers with diameters which ranged from several micrometers to tens of nanometers. The method to prepared nano PNIPAAm fiber by electropun was studied. The rusult showed that the diameter of PNIPAAm nanofiber within respective system below 200 nm were successfully prepared by electrospun method, and the reversible switching with LCST feature was also behaved clearly under fiber condition.

关 键 词：纳米纤维 智能材料 PNIPAAM 最低临界转换温度 静电纺丝 

分 类 号：TQ326.4[化学工程—合成树脂塑料工业]