Nanosilica Particulate Magnetic and Titanate Coupling Agent as Alternative Filler on Natural Rubber Composites with Human-Tissue-Like Mechanical Characteristic Riri Murniati (1*), Putrya Hawa (2) and Mikrajuddin Abdullah (3)
1 Department of Physics, Indonesia Defense University, IPSC Sentul, Bogor 16810, Indonesia
*ririmurniati90[at]gmail.com
2 Department of Medical, Indonesia Defense University, IPSC Sentul, Bogor 16810, Indonesia
3 Department of Physics, Institut Teknologi Bandung, Ganesha 10, Bandung 40132, Indonesia
Abstract
This study has investigated the effect of magnetically modified natural zeolite on nanosilica-reinforced natural rubber composites that has a mechanical characteristic similar to human tissue. We use technical specifications rubber (TSR) SIR 20 with nanosilica reinforced fillers and Titanate coupling agent (TCA) as filler and elastomer binders. The results showed that nanosilica-zeolite-magnetite (Fe3O4) mixture had an influence on strength and stiffness and could be a substitute for Carbon Black. The relationship between crosslink density, mechanical properties and damping properties were explored. We also identified that improved properties were produced by modification of white oil softeners and fillers of nanosilica-zeolite-magnetite mixtures. The precursors made with some variations include the optimization of the type of base material used rubber, optimization type of filler, optimization volume fraction of nanosilica, and optimization crumb rubber softener. Samples characterized by using Universal Testing Machine and then tested with the incision test equipment that specially designed by our own team. The results of magnetically modified zeolite on nanosilica-reinforced natural rubber composites showed that crosslink density, mechanical properties and damping properties increased significantly. Mechanical characteristics of different human body part tissue were compared to the control samples and resulted samples that have similar mechanical characteristics with internal human tissue characteristic. Based on these results, nanosilica fillers combine with magnetically modified zeolites and titanate coupling agent, potentially replacing carbon black and applicative for synthetic muscle replacement cadavers with a customized formula.
