超疏水耐水洗的pH响应性聚苯胺变色织物  

pH-Responsive polyaniline chromic textile with supper-hydrophobicity and washability

作　　者：李昕[1] 金俊平[1] 王锐[1] 

机构地区：[1]北京服装学院材料科学与工程学院服装材料研究开发与评价北京市重点实验室,北京100029

出　　处：《复合材料学报》2012年第5期61-68,共8页Acta Materiae Compositae Sinica

基　　金：北京市科技新星项目(2007B010);国家自然科学基金(20974005);北京市自然科学基金(2102017)

摘　　要：采用一种表面存在大量微/纳米裂纹、横截面为十字型异型纤维的涤棉混纺织物作为基底,以全氟壬烯氧基苯磺酸钠(OBS)作为掺杂剂,FeCl3为氧化剂,通过原位化学氧化法制备得到了具有超疏水性能和耐水洗的聚苯胺/涤棉复合导电织物(PANI/CPCCT),研究了pH对PANI/CPCCT的影响。结果表明,该导电织物的水接触角最高可达162°,在碱性条件下仍具有良好的导电性能和疏水性,并且其颜色也随着pH从1增大至14而发生由墨绿色-蓝绿色-蓝黑色-褐色之间的可逆变化,其浸润性可快速响应外界酸度的变化,发生超疏水到超亲水的可逆转变,具有良好的pH响应性。此外,PANI/CPCCT可耐受弱酸性溶液的洗涤,并可通过在强酸溶液中浸泡而重复使用,具有较强的应用性。这些优良的性能,使其有望在开发酸度控制的浸润性开关、自清洁织物、酸度检测等方面获得应用。Polyaniline-coated conducting polyester and cotton cospinning textile （PANI/CPCCT） was prepared via an in-situ polymerization in the presence of sodium p-perfluorous nonenoxybenzene sulfonate （OBS） as the dopant, FeCl3 as the oxidant and the polyester and cotton cospinning textile （PCCT） with lots of micro/nano-sized gaps on the surface as the substrate. The effect of pH value on the PANI/CPCCT was investigated. It is found that the prepared PANI/CPCCT presents super-hydrophobic function with the biggest water conduct angle of 162？, it also takes on good conductivity and hydrophobicity in alkaline condition. The color and wettability of the PANI/CPCCT present pH-responsive function： its color can reversibly change from dark green to blue green, dark blue, and brown in turn when the pH increases from 1 to 14, and its wettability is reversibly varied from super-hydrophobic to super-hydrophilic induced by a doping and de-doping process of PANI as well. The washing test shows that PANI/CPCCT has a good washability, and its property can be recovered again by being dipped in strong acid solution. All of these superior properties make that the as-prepared PANI/CPCCT can obtain practical utility in acid-controlled wettability switching, self-cleaning textile, acidity detection and other applications.

关 键 词：PH响应性 超疏水 聚苯胺 变色织物 耐水洗 

分 类 号：TB332[一般工业技术—材料科学与工程] O631.3[理学—高分子化学]