Improved Dispersion of Carbon Nanoparticles Modified by Poly(Sodium 4-Styrenesulfonate) and Its Influence on the Properties of Natural Rubber Latex |
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| Authors: | Xuelian He Zheng Peng Jingjie Han Puwang Li Haiyan Xu Chifei Wu |
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| Institution: | 1. Polymer Alloy Laboratory , East China University of Science and Technology , Shanghai , P.R. China;2. Chinese Agricultural Ministry Key Laboratory of Natural Rubber Processing , Agricultural Product Processing Research Institute at Chinese Academy of Tropical Agricultural Sciences , Zhanjiang , P.R. China |
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| Abstract: | A novel strategy of radical polymerization of sodium 4-styrenesulfonate on the surface of carbon black (CB) in the solid state was developed to prepare hydrophilic carbon nanoparticles (PNASS-CB). A high performance natural rubber latex (NRL)/PNASS-CB composite was produced by the latex compounding technique. Scanning electron microscope shows considerable improvement in the dispersion of PNASS-CB in rubber matrix. The lower degree of filler–filler networks and the stronger filler–rubber interaction of PNASS-CB in rubber matrix were confirmed by dynamic mechanical thermal analysis. Rheometric properties of NRL/PNASS-CB, like scorch time and optimum cure time, decreased. Tensile strength, tear strength, and elongation at break increased due to stronger interaction between the PNASS-CB and rubber matrix. Dynamic mechanical properties of the modified carbon nanoparticles further corroborated a significant contribution from the better dispersion and efficient load transfer of PNASS-CB on the static and dynamic mechanical properties of composites. |
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| Keywords: | dynamic mechanical properties mechanical properties natural rubber latex reinforcement sodium 4-styrenesulfonate thermo-mechanical |
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