Abstract
Reliable quantification techniques for graphene oxide (GO) and graphene nanosheets (GNs) in ESD rubber product are limited. We demonstrated an effective ultrasonically−assisted latex mixing (ULM) technique for dispersion of GO and GNs at low concentration (0.5, 1.0 and 1.5 part per hundred of rubber; phr) in natural rubber latex (NRL) to produce NR/GO and NR/GNs conductive thin film. The filled−NR composites were prepared by ULM, followed by latex dipping coagulation. The morphologies from transmittance electron microscopy (TEM) of stabilized GO and GNs dispersion showed successfully dispersion and exfoliation in NR matrix. Compared to pure NR, the tensile strengths of NR/GO and NR/GNs (1.5 phr) increased by ~58% and ~32%, respectively, while there were decreased in the %elongation at break and were no significant change in the force at break. In case of studying the electrical properties, sheet resistances of filled−NR composites declined with the incorporation of GO and GNs. However, the NR composite with 1.5 phr of GNs showed the best conductivity.
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