화학공학소재연구정보센터
Journal of Membrane Science, Vol.163, No.1, 1-17, 1999
Effect of nature and extent of crosslinking on swelling and mechanical behavior of styrene-butadiene rubber membranes
The influence of crosslink type and crosslink density on the swelling and mechanical behavior of styrene-butadiene rubber (SBR) membranes were studied in four aliphatic hydrocarbons. To vary the crosslink type and crosslink density, SBR was vulcanized by four different vulcanizing systems viz conventional, efficient, peroxide and a mixture of sulfur and peroxide. SBR vulcanizates having mono or disulfidic crosslinks (efficient system) exhibited the highest solvent uptake whereas those with C-C bonds (peroxide system) showed the lowest. SBR crosslinked by the mixed system showed superior mechanical properties in the unswollen, swollen and deswollen conditions. Arrhenius and thermodynamic parameters were evaluated from the diffusion data. Finally, a comparison between theoretical and experimental diffusion results was carried out.