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Use of functionalized WS2 nanotubes to produce new polystyrene/polymethylmethacrylate nanocomposites |
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| Authors: | W. ZhangS. Ge Y. WangM.H. Rafailovich O. DhezD.A. Winesett H. AdeKurikka V.P.M. Shafi A. UlmanR. Popovitz-Biro R. TenneJ. Sokolov |
| Affiliation: | a Department of Materials Science and Engineering, State University of New York at Stony Brook, Stony Brook, NY 11794, USA b Department of Physics, North Carolina State University, Raleigh, NC 27695, USA c Department of Chemistry and Chemical Engineering, Polytechnic University, 6 Metrotech Center, Brooklyn, NY 11230, USA d Department of Materials and Interfaces, Weizmann Institute, Rehovot 76100, Israel |
| Abstract: | Multiwall WS2 nanotubes of 40-50 nm diameter were functionalized with n-octadecyl phosphonic acid by sonication in toluene and blended with mixtures of polystyrene (PS) and polymethylmethacrylate (PMMA) to form new nanocomposite (NC) materials. The surface and domain structures were studied by atomic force microscopy (AFM), scanning transmission X-ray microscopy (STXM) and transmission electron microscopy (TEM) for various levels of loading of nanotubes up to 20 wt%. Phase-separated domain size and surface roughness of the nanocomposite films were found to be dramatically reduced relative to the pure homopolymer blend and good dispersal of the nanotubes in the blend matrix was attained. |
| Keywords: | Polymer composite materials Polymer physics Pure homopolymer blend |
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