The effect of POSS nanoparticles on crosslinking of styrene-butadiene rubber nanocomposites

The effect of octaisobutyl-polyhedral oligomeric silsesquioxane (OIB-POSS) as a nanosized reinforcement on the cure kinetics, crosslinking density, and mechanical properties styrene-butadiene rubber (SBR) nanocomposites was examined in this study. For purpose, SBR compounds with various OIB-POSS nanoparticle loadings at 1, 3, 5 phr were prepared their results compared reference compound without OIB-POSS. When 1 added to matrix, elongation break values tensile strength corresponding nanocomposite increased by 24.1% 29.2% sample, respectively. presence nanoparticles random distribution matrix confirmed transmission electron microscopy. density calculated Flory-Rehner method decrease observed addition nanoparticles. In addition, thermal aging process 70 °C for h applied vulcanized samples. It noted that SBR/OIB-POSS remarkably improved, whereas densities gradually decreased after aging.