critical solution temperature

critical solution temperature

[′krid·ə·kəl sə′lü·shən ‚tem·prə·chər]
(physical chemistry)
The temperature at which a mixture of two liquids, immiscible at ordinary temperatures, ceases to separate into two phases.
References in periodicals archive ?
A very well known temperature sensitive hydrogel is crosslinked poly(/V-isopropyl acrylamide) which has a lower critical solution temperature (LCST) at 31-33[degrees]C in water [1, 2).
P(NIPAAm-co-AAm) and p(NIPAAm-co-AAm)/XA hydrogels that contain crotonic acid (CA) exhibit a lover critical solution temperature (LCST) at 28[degrees]C, whereas p(NIPAAm-ce;-AAm)/IA, and P(NIPAAm-co-AAm)/ACA hydrogels exhibit a lover critical solution temperature at 30.
The lower critical solution temperatures of the prepared polymers.
The polymer particles have a lower critical solution temperature and the polymer particles are formed at a temperature above the lower critical solution temperature.
Thermodynamics and Phase Equilibria * Introduction to free energy of mixing * Why entropy effects are small in polymers * Chemistry factors controlling miscibility * Blending principles and adhesion between polymers * Phase diagrams: lower critical solution temperature, upper critical solution temperature, generalized phase diagrams * Flory-Huggins equation * Copolymers and blending * Copolymer representations - temperature composition plots, miscibility maps
This suggests that the blend exhibits lower critical solution temperature (LCST) behavior.
As the temperature increases, this repulsive effects decreases and blends exhibit lower critical solution temperature behavior.
However, when we have even modest differences in microstructure of the same monomer, a lower critical solution temperature (LCST) should be found.
5) studied the phase behavior of a polystyrene/polyisoprene blend with an upper critical solution temperature (UCST) in the presence of scC[O.
This paper reports preliminary results of the effect of shear flow on the phase behavior of two blends: a polystyrene/polyisobutylene (PS/PIB) blend that exhibits upper critical solution temperature (UCST) phase behavior and polystyrene/poly(vinyl methyl ether) (PS/PVME) blends that show lower critical solution temperature (LCST) phase behavior.

Full browser ?