Journal
MATERIALS LETTERS
Volume 160, Issue -, Pages 384-387Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2015.07.146
Keywords
Fiber technology; Surfaces; Oil/water separation; PH-responsive fabric; Underwater superoleophobic
Funding
- National Natural Science Foundation of China [51303161]
- China Postdoctoral Science Foundation [2014M561790]
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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. (C) 2015 Elsevier B.V. All rights reserved.
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