温度响应涂层棉织物的制备及其可逆润湿性能研究
2021-08-23崔妞妞张彩玉李家炜顾健军戚栋明厉巽巽陈玉霜
崔妞妞 张彩玉 李家炜 顾健军 戚栋明 厉巽巽 陈玉霜



摘 要:为制备具有耐久稳定的温度响应涂层棉织物,采用自由基共聚法合成了N异丙基丙烯酰胺(NIPAM)与乙烯基三乙氧基硅烷(VTES)的温敏性共聚物(PNIPAM-co-PVTES),然后通过溶胶凝胶法将所合成的温敏共聚物涂覆于棉织物上,制得温度响应涂层棉织物。借助傅里叶变换红外光谱(FTIR-ATR)、扫描电子显微镜(SEM)和水接触角测试(CA)等对所制得涂层棉织物的结构、形貌和温度响应润湿性能进行表征与分析。结果表明:温度响应共聚物均匀涂覆于棉织物表面,所制得的涂层棉织物具有温度响应的可逆润湿性能。当温度小于32 ℃时,涂层棉织物表现为亲水性能;当温度大于32 ℃,表现为疏水性能。涂层棉织物具有耐久稳定的温度响应性,经过5次标准水洗之后,涂层织物在26~42 ℃保持良好的可逆润湿性。
关键词:LCST温敏聚合物;涂层织物;温度响应性;润湿性能
中图分类号:TS 193.5 文献标志码:A
文章编号:1009-265X(2021)03-0084-05
Abstract: In order to prepare durable and stable cotton fabric coated by thermo-sensitive copolymer, a thermo-sensitive copolymer (PNIPAM-co-PVTES) was synthesized by free radical copolymerization of N-isopropylacrylamide (NIPAM) and vinyl triethoxy silane (VTES), and then the thermo-sensitive copolymer was coated on the cotton fabric by the sol-gel method to prepare the cotton fabric coated by thermo-sensitive copolymer. Fourier transform infrared spectroscopy (FTIR-ATR), scanning electron microscopy (SEM) and water contact angle test (CA) were used to characterize and analyze the structure, morphology and thermo-sensitive wettability of the coated cotton fabric. The results showed that the coated cotton fabric prepared by uniformly coating the thermo-sensitive copolymer on the surface of cotton fabric had reversible wettability with temperature response. When the temperature was below 32℃, the coated cotton fabric showed hydrophilic property. When the temperature was above 32℃, it showed hydrophobic property. The coated cotton fabric had durable and stable temperature response. After five times of standard washing, the coated fabric maintained good reversible wettability between 26 ℃ and 42 ℃.
Key words: LCST thermo-sensitive polymer; coated fabric; temperature response; wettability
智能纺织品指的是一种能够对环境或外界刺激(例如热、光、电、磁、化学、机械变化等)做出响应的智能织物或材料。温敏纺织品以温度作为刺激方式,具有简单易实现的特点,在调温调湿、抗浸储水、香精缓释、生物医用等领域具有广泛的应用前景[1]。
聚N异丙基丙烯酰胺(PNIPAM)具有极窄的相变温度区间(通常在1 ℃内即由亲水、膨胀状态转变为疏水、收缩状态)[2]和接近人类体温的低临界溶解温度(LCST)的特性,被广泛应用于温敏性纺织品[1,3]。近年来,研究人员通过化学键将PNIPAM接枝在织物表面,制备了具有温敏效应的智能型纺织品。……
