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Synthesis of Environmental-Friendly Starch-acrylic Coating Sols by Emulsion Polymerization  

Li, Mei-Chun (Department of Applied Chemical Engineering, Korea University of Technology and Education)
Mun, Yoo-Ju (Department of Applied Chemical Engineering, Korea University of Technology and Education)
Cho, Ur-Ryong (Department of Applied Chemical Engineering, Korea University of Technology and Education)
Publication Information
Elastomers and Composites / v.45, no.4, 2010 , pp. 272-279 More about this Journal
Abstract
Starch is an environmental-friendly natural source, more interests are attracted to use starch for synthesis of composites and coating sols. Starch-acrylic coating sols for architectural materials were synthesized by emulsion polymerization. The structures of synthesized materials were characterized by using Infrared spectra, $^1H$-NMR spectra, and physical characteristics were investigated by X-ray diffraction, foaming test, whiteness test, gloss test and tensile strength test. XRD results showed that starch in starch-acrylic copolymer matrix was in an amorphous state. Starch-acrylic emulsion was compounded with 1%, 3%, 5% foaming agent (n-pentane) and 60% $CaCO_3$ solution. The results showed that starch and foaming agent could increase the foamability. Tensile strength increased with the enhancement of starch and foaming agent concentration. But whiteness and gloss decreased with increase of starch and foaming agent concentration.
Keywords
wallpaper; starch; acrylic monomers; coating sol;
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