Abstract
This paper studied the potential of a hybrid organic-inorganic membrane, ENR/PVC/SiO2 membrane for separation purposes. The ENR/PVC/SiO 2 membranes were prepared using spontaneous solvent exchange and evaporation techniques. The amount of SiO 2 added was varied at 1, 3, 5 and 8 wt%. The SEM micrographs showed that pores were developed upon addition of SiO 2 . The tensile strength and modulus were also enhanced with increasing amount of SiO 2 up to 5 wt%. At higher SiO 2 loadings, the mechanical strength of the membrane decreased due to the agglomeration of SiO 2 particles. Gas permeation test was done on ENR/PVC/SiO 2 membranes using NO 2 gas and CO 2 gas. The permeability of both gasses increased with the amount of SiO 2 added to the membrane, which attributed to the increase in nanopores. The membranes with SiO 2 had a higher permeability to CO 2 than NO 2 Keywords : epoxidised natural rubber; polyvinyl chloride; membrane; silica; gas separation.
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