Functionalized Nanosilica for Vulcanization Efficiency and Mechanical Properties of Natural Rubber Composites

Accelerator functional character was introduced on nanosilica by chemical reaction of sodium isopropyl xanthate (SIPX) with (NS). Functional characteristics were confirmed elemental analysis, thermogravimetric and infrared spectroscopy. This SIPX functionalized (SIPX-NS) incorporated natural rubber (NR) composites used to evaluate the dispersion silica in also interaction between filler. The finely dispersed SIPX-NS particles NR matrix are revealed from morphological analysis. Subtle changes surface chemistry had a profound influence dispersibility matrix. 4SIPX-NS composite showed an increase tensile strength 10%, flex crack initiation resistance 13%, retention 16% cure time reduced 2 min relative those 3NS composite. simple, efficient cost-effective modification improved vulcanization efficiency mechanical performance has great potential fabrication high-performance polymer composites.Graphical abstract