Coupled transport processes in responding membranes: the case of a single gradient.

摘要: We present a theoretical study of two coupled diffusion processes through membrane which is able to respond the presence diffusing substances with phase change. The case we consider when direct driving force for one vanishes, i.e. chemical potential components, or some other intensive variable, kept equal in reservoirs surrounding membrane. coupling transport results non-zero gradients inside also variable that reservoirs. There concomitant change coexistence compared behaviour expected if only considering external conditions. properties phases within have be different this effect occur, but otherwise prerequisites are rather general. An analogous and heat conduction. Amphiphilic systems biological membranes often show large changes structure due small variations thermodynamic variables such as temperature, osmotic pressure solvent cosolvents cosolutes. effects find therefore particularly relevant these systems.