Molecular Transport in Membranes

Swelling of medical grade silicones in liquids and calculation of their cross-link densities

“…The four liquids that caused the most swelling were n-heptane, followed by cyclohexane, then 2,2,4-trimethylpentane and then toluene. Hence, these are regarded as good liquids for swelling silicones [7,39,50,55]. This result is consistent with the results from previous studies on the swelling of silicones [22,25,26].…”

Transport through crosslinked poly(2‐hydroxyethyl methacrylate) hydrogel membranes

“…This phenomenon occurs in virtually every case where there is significant interaction between an amorphous polymer and the penetrant. 16 Variation of the diffusion coefficient with increasing penetrant concentration usually follows a relationship of the type;…”

Additional Staged Operations

“…In addition, some systems ranged from 95 to 100 percent (5,13,14,16). With these values and equation (13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30)(31) we obtain Note that there is excellent agreement between the various methods. This agreement occurs because of the dilute nature of the system.…”

“…(1 3-25) (13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26) Similarly, for the liquid side we obtain (13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28) (1 3-29)…”

“…In [ ; ; 1 ; : ; ; I (13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30)(31) The same is true for the liquid side: (13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30)(31)(32) ( X * -X ) , -( X * -X ) 2 ( X -X*)lrn = In [ ; ; : I % ( ; I Another simplified method uses the concept of a dilute gas so that Likewise the Noc and N O L values become r, -mX, Y, -m X , where K = mG,/L, and K' = L,/mG,. These expressions can be related in a plot as per Complicated systems (high concentrations, heat effects, curved equilibrium lines, multicomponents, etc.)…”