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Polystyrene/MMT nanocomposites prepared by soap-free emulsion polymerization with high solids content |
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| Authors: | Jun Chen Hai-Long Liu Xiao-Qin Hong Mu-Li Wang Cheng Cai Qian-Feng Zhang |
| Institution: | 1. School of Chemistry and Chemical Engineering, Institute of Molecular Engineering & Applied Chemistry, Anhui University of Technology, Ma’anshan, 243002, China 2. AnHui Province Key Laboratory of Environment-Friendly Polymer Materials, Anhui University, Hefei, 230036, China 3. CNOOC Changzhou Paint and Coating Industry Research Institute, Changzhou, 213016, China |
| Abstract: | Polystyrene/montmorillonite (PSt/MMT) nanocomposite latexes have been synthesized by soap-free emulsion polymerization using MMT clay platelets as stabilizer. Small amounts of methacrylic acid were used as auxiliary monomer to promote clay adhesion to the surface of the particles. Overall solids content of the composite latexes in complete absence of coagulation of up to 30.7?wt% are reported under batch conditions. The 3?wt% MMT clay platelets were sufficient to maintain the colloidal stability and increasing MMT clay content resulted in the increase of particle diameter due to the improved viscosity of reaction medium. Transmission electron microscopy results demonstrate the existence of MMT platelets on the particle surface. X-ray diffraction spectroscopy (XRD) results show that an exfoliated structure of PSt/MMT nanocomposites was obtained in this study with the absence of d001 diffraction peak of MMT in the XRD region. |
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