By A. K. Bhowmick, M. Bhattacharya, S. Mitra, K. Dinesh Kumar (auth.), Gert Heinrich (eds.)
Morphology–Property courting in Rubber-Based Nanocomposites: a few fresh advancements, via A. ok. Bhowmick, M. Bhattacharya, S. Mitra, ok. Dinesh Kumar, P. okay. Maji, A. Choudhury, J. J. George and G. C. Basak; * Rubber–Clay Nanocomposites: a few contemporary effects, by way of Amit Das, De-Yi Wang, Klaus Werner Stöckelhuber, René Jurk, Juliane Fritzsche, Manfred Klüppel and Gert Heinrich; * floor amendment of Fillers and Curatives by way of Plasma Polymerization for more advantageous functionality of unmarried Rubbers and multiple Rubber/Rubber Blends, by way of J. W. M. Noordermeer, R. N. Datta, W. okay. Dierkes, R. Guo, T. Mathew, A. G. Talma, M. Tiwari and W. van Ooij; * fresh advancements on Thermoplastic Elastomers through Dynamic Vulcanization, via R. Rajesh Babu and Kinsuk Naskar; * PTFE-Based Rubber Composites for Tribological purposes, through M. S. Khan and G. Heinrich
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Using the sol–gel technique . In this work also, TEOS has been used as the precursor for nanosilica generation. 5, with concentrated hydrochloric acid as the catalyst. A significant improvement in the Young’s modulus and the tensile strength of the samples was observed. Interaction at organic–inorganic interfaces because of hydrogen bonding has been speculated from IR analysis of the hybrid composites, and uniform dispersion of nanoparticles has been proved from TEM analysis and from results obtained from energy dispersive X-ray mapping of silicon.
In this laboratory, rubber-based nanocomposites have been prepared from SBR (with 23% styrene content, 23SBR) and NBR with varying acrylonitrile content (19%, 34%, and 50%) using NA and o-MMT clays . Figure 17 illustrates the temperature dependencies of the storage modulus for SBR and its nanocomposites. With the addition of 4 phr of nanoclays, the clay-filled nanocomposites give higher storage modulus values compared to unfilled SBR in both the glassy and rubbery regions. , Tg shifts from –57 C in unfilled SBR to –50 C in the case of modified-clay-filled sample.
Consequently, excellent improvement in mechanical properties like tensile strength, elongation at break, and modulus is observed by the incorporation of the nanoclays in the BIMS. Maiti and Bhowmick have also studied the effect of solution concentration (5, 10, 15, 20, and 25 wt%) on the properties of fluorocarbon clay nanocomposites . They noticed that optimum properties are achieved at 20 wt% solution. At the optimized solution concentration, they also prepared rubber/clay nanocomposites by a solution mixing process using fluoroelastomer and different nanoclays (namely NA, 10A, 20A, and 30B) and the effect of these nanoclays on the mechanical properties of the nanocomposites has been reported, as shown in Table 4 .