Improved Dispersion of Carbon Nanoparticles Modified by Poly(Sodium 4-Styrenesulfonate) and Its Influence on the Properties of Natural Rubber Latex

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.

Enhancement of dispersion stability of inorganic additives via poly(sodium-4- styrenesulfonate) treatment geared to hydrogel applications

“…In addition, a wide variety of filler modification methods, such as thermomechanical treatment technique, one-step in-situ ball milling, hydrothermal autoclaving and dip and dry method, etc. have been applied to various other fillers, such as carbon black, hydroxyapatite and various other inorganic material as described in the literature [23][24][25][26]. However, as far as we know, studies applying these latter methods to clays have not been reported yet.…”

Effect of reynolds number on the dispersion of carbon black in natural rubber latex and filler-rubber interfacial interaction in high-speed jet flow field

“…Elastomers are generally reinforced by an additional rigid phase for practical use because the intrinsic modulus and strength of rubber is low . Some studies have proposed that the overall properties of a rubber composite can be enhanced even further if better dispersion of particles can be achieved .…”