• Elastomers and Composites
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• v.48 no.1
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• pp.46-54
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• 2013

A new terpolymer, styrene-butadiene-benzyl methacrylate copolymer (BzMA-SBR) was synthesized by emulsion polymerization. After polymerization, XSBR ionomer was prepared by deprotection of benzyl group of BzMA through hydrolysis with NaOH. Carboxyl group contents can be controlled by changing the initial feed contents of BzMA. Structure of BzMA-SBR and XSBR were characterized by FTIR, $^1H$ NMR and DSC.

• Journal of the Semiconductor & Display Technology
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• v.16 no.1
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• pp.52-58
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• 2017

Graphene oxide (GO)/carboxylated styrene-butadiene rubber (XSBR) nanocomposites with various contents of GO were prepared by a latex compounding method. It has been confirmed that the functional groups of GO and the hydrogen bonds between GO and XSBR are existed. It can be seen that the scorch time ($t_{s2}$), which is the measurement of incipient vulcanization of rubber, showed a delay after the addition of GO. Field emission scanning electron microscopy was employed to confirm the uniform dispersion of filler in the matrix. Indeed, with increasing fillers loading, the torque, tensile strength, thermal stability and crosslink density of obtained nanocomposites were improved. These results were correlated to the better dispersion of fillers through the rubber matrix.