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A theoretical framework is proposed to model the observed water/salt permeability, diffusivity, and sorption selectivity tradeoff relationships with water permeability, diffusion, and sorption coefficients. Salt sorption is modeled using an electrostatic (or dielectric) exclusion approach. Water and salt diffusion are modeled using hindered diffusion and free volume theories. The modeling approach...
An investigation of the long-term sorption kinetics and diffusion anomalies of dichloromethane, chloroform, carbon tetrachloride, 1,2-dichloroethane, 1,1,1-trichloroethane, 1,1,2,2-tetrachloroethane, trichloroethylene and tetrachloroethylene into the tetrafluoroethylene/propylene copolymer membranes has been carried out using gravimetric sorption technique at 30, 45 and 60°C. Coefficients of diffusion...
Molecular transport of aromatic hydrocarbons through crosslinked SBR has been carried out in the temperature range 25-65°C. SBR has been vulcanized by four different vulcanizing techniques viz., conventional, efficient, dicumyl peroxide and a mixture consisting of sulfur and peroxide. SBR vulcanized with EV system showed highest solvent uptake tendency and that vulcanized with peroxide showed the...
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