超亲水性
材料科学
润湿
接触角
甲基丙烯酸
吸附
化学工程
原子转移自由基聚合
聚甲基丙烯酸
制作
图层(电子)
高分子化学
聚合物
聚合
复合材料
有机化学
化学
病理
工程类
医学
替代医学
作者
Jindan Wu,Yuelin Jiang,Dongjie Jiang,Jianlong He,Guoqiang Cai,Jiping Wang
标识
DOI:10.1016/j.matlet.2015.07.146
摘要
Cotton textile with special surface wettability has a promising future for oil/water separation due to its high adsorption capacity and low cost. A facile method was employed to prepare a durable polymeric layer with pH-triggered switchable surface wettability on cotton fabric. An amino-containing dye intermediate (2-Chloro-4,6-diamino-1,3,5-triazine, CDATA) was used to produce more reactive grafting sites for surface initiated atom transfer radical polymerization (SI-ATRP) of poly(methacrylic acid) (PMAA). The obtained cotton-PMAA fabric showed high pH-responsibility, which was indicated by the shift of O–C=O peaks in Infrared (IR) spectrum and the transition of water/oil contact angle (WCA/OCA). Moreover, with the rising pH, the surface transited from superhydrophobic to superhydrophilic and underwater superoleophobic, leading to efficient oil/water separation. This study provides an innovative way to fabricate smart cotton fabric with high efficiency and high selectivity for oil/water separation.
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