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Title: Ionically crosslinked core-shell particles for waterborne humidity-sensitive coatings
Authors: Wang, Yusheng
Li, Chen
Zhai, Wenzhong
He, Yu-Feng
Song, Pengfei
Xiong, Yubing
Wang, Rong-Min
Keywords: Polymer;Ionomers;Emulsion polymerization;Core-shell ionomers latex;Zinc crosslinking particles;Smart coatings;Humidity-sensitive coatings
Issue Date: Oct-2016
Publisher: NISCAIR-CSIR, India
Abstract: Using conventional functional monomers, such as methylacrylic acid (MAA), styrene (St), methyl methacrylate (MMA) and butyl acrylate (BA), the core-shell styrene-acrylic ionomer particles (PSA) are prepared by two-step emulsion polymerization. Then, using zinc ion as ionic crosslinker of the carboxylate groups from the shell layer, a novel self-crosslinked core-shell ionomer latex (PSA-Zn) has been successfully prepared and characterized by dynamic light scattering and transmission electron microscopy, whose components were also confirmed by FT-IR and TGA. After mixing pigments and porous fillers, the cheap, readily available and environment friendly coatings (PSA-Zn-C) has been prepared. Compared to PSA and EF-AAC coatings, the adhesive force, hardness and thermal stability of PSA-Zn film are better. Moreover, the core-shell ionomer coating (PSA-Zn-C) can significantly decrease or increase relative humidity in response to environmental humidity in the artificial climate box, and this is a promising candidate for development of waterborne humidity-sensitive coatings.
Page(s): 1167-1173
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.55A(10) [October 2016]

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