Journal
POLYMER
Volume 55, Issue 10, Pages 2389-2393Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2014.03.053
Keywords
Giant surfactant; Colloidal particle; Smart surface; Superhydrophobic
Categories
Funding
- Natural Science Foundation of China [91326202, 21174100]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Program of Innovative Research Team of Soochow University
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The colloidal particles with switchable surfaces (i.e. smart surfaces) have attracted great attention for numerous potential industrial applications. We report here a novel approach for the fabrication of polymeric particles with smart surfaces by emulsion polymerization using giant surfactant. Specifically, the giant surfactant was obtained by inccirporating poly(4-vinylpyridine) chains onto the one bulb of snowman-shaped polystyrene particles, and then used as emulsifier for the emulsion polymerization at pH = 2.00. The nearly monodisperse waxberry-like polystyrene particles were prepared with dual-size roughness surfaces, and the particulate film exhibited reversibly pH-switchable superhydrophobic property due to the pH-sensitivity of P4VP chains and the surface topology. This property enabled the particles could be used to effectively sequester hazardous anions from the wastewater. (C) 2014 Elsevier Ltd. All rights reserved.
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