Exploring the filler–polymer interaction and solvent transport behavior of nanocomposites derived from reduced graphene oxide and polychloroprene rubber

Abstract

Aliphatic solvent resistance of polychloroprene rubber (CR) reinforced reduced graphene oxide (RGO) nanocomposites were explored in the temperature range of 30–50 °C using hexane, heptane, and octane. Microstructure‐assisted solvent resistant property is evident from transmission electron microscopy images of fabricated composites. Different transport parameters such as diffusion, permeation, and sorption constants were moderate while increasing RGO content. Diffusion mechanism was explained based on the permeating molecule and is found to be close to Fickian mechanism except for heptane. Evaluation of kinetic and thermodynamic parameters shows the ability of nanoreinforcement to alter thermodynamic characteristics and rate constant values. The extent of reinforcement was also evaluated by Kraus equation. From swelling studies, molecular mass between crosslinks was evaluated using Flory–Rehner equation and compared these values with theoretical predictions such as phantom and affine models to analyze the deformation and mobility of the network during swelling. Temperature plays a significant role in the transport of organic solvent through CR/RGO nanocomposites. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48168.

Vulcanization kinetics of styrene butadiene rubber reinforced by graphenic particles

“…[25][26][27] In recent years, graphene oxide (GO) and reduced graphene oxide (rGO) have attracted much attention due to their ability to enhance mechanical, thermal, electrical, and especially gas barrier properties of rubber composites. [1,[28][29][30][31][32][33][34][35][36][37][38][39][40] However, the effects of GO and its derivatives on the kinetics of sulfur vulcanization in such systems has not been studied. There is no appropriate affinity between nonpolar elastomers and highly polar GO.…”

Study the synergistic effect of fumed silica and reduced graphene oxide insertion on the thermal, mechanical, tribological, and solvent transport properties of silicone rubber nanocomposites

“…In the ambient temperature range, silicone rubber (QM) reinforced FSiO 2 aromatic solvent resistance, and rGO nanocomposites were investigated using hexane, benzene, and toluene. The microstructure‐assisted solvent resistance property of fabricated composites is evident from the morphological analysis 35 …”

“…The microstructure-assisted solvent resistance property of fabricated composites is evident from the morphological analysis. 35…”

“…Because of its molecular size compared to the other two solvents, xylene had the lowest diffusion coefficient values of all the solvents examined. 35…”

“…The Kraus plot (Figure 12) shows a negative slope, indicating that the interaction with rGO and QMSi has enhanced. 14,35 TEM images of QMSirGO nanocomposites show that, When the concentration of rGO increases the interphase comes in contact decreases. Therefore, the amount of solvent uptake decreases as the filler load increases.…”