Volume Phase Transition in Polymeric Gel
نویسندگان
چکیده
منابع مشابه
A Review: Polymeric In-situ Gel System
Smart polymeric systems represent promising means of delivering the drugs; these polymers undergo sol-gel transition, once administered. In-situ gel structure occurs due to one or combination of different stimuli like pH change, temperature modulation and ionic exchange. The formation of gels depends on factors like temperature modulation, pH change, presence of ions and ultra violet irradiatio...
متن کاملAmoeba-like self-oscillating polymeric fluids with autonomous sol-gel transition
In the field of polymer science, many kinds of polymeric material systems that show a sol-gel transition have been created. However, most systems are unidirectional stimuli-responsive systems that require physical signals such as a change in temperature. Here, we report on the design of a block copolymer solution that undergoes autonomous and periodic sol-gel transition under constant condition...
متن کاملVolume Phase Transition of Swollen Gels: Discontinuous or Continuous?
Poly(N-isopropylacrylamide) (PNIPAM) linear chains and spherical microgels were studied using laser light scattering. The volume change associated with the temperature dependence of the hydrodynamic radii of both the linear chains and the spherical microgels is continuous, in contrast to a discontinuous volume phase transition observed for a bulk PNIPAM gel with an identical composition. A reex...
متن کاملDynamics of interface of gels undergoing volume phase transition
The dynamics of interface of chemical gels undergoing volume phase transition is studied for one-dimensional geometry Permeation of solvent through the interface is taken into account It is shown that the rate determining process of motion of interface is the permeation of solvent through the bulk domains Generalization to three-dimensional case is also discussed.
متن کاملUnlocking of interlocked heteropolymer gel by light: photoinduced volume phase transition in an ionic liquid from a metastable state to an equilibrium phase.
An azobenzene-containing heteropolymer gel in an ionic liquid exhibits thermally reversible volume phase transition when the azobenzene moiety mainly exists in the cis-state, whereas the transition becomes irreversible when it is in the trans-state and an interlocked collapsed state is stabilized; however, the unlocking of the metastable state occurs by UV light irradiation.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of the Society of Materials Engineering for Resources
سال: 1993
ISSN: 1884-6629,1347-9725
DOI: 10.5188/ijsmer.1.177