Journal ArticleDOI
Collapse of Gels in an Electric Field
Reads0
Chats0
TLDR
An infinitesimal change in electric potential across a polyelectrolyte gel produces a discrete, reversible volume change, which can be several hundred times smaller than that of the swollen gel.Abstract:
An infinitesimal change in electric potential across a polyelectrolyte gel produces a discrete, reversible volume change. The volume of the collapsed gel can be several hundred times smaller than that of the swollen gel.read more
Citations
More filters
Journal ArticleDOI
Environment-sensitive hydrogels for drug delivery
Yong Qiu,Kinam Park +1 more
TL;DR: Development of environmentally sensitive hydrogels with a wide array of desirable properties can be made is a formidable challenge, however, if the achievements of the past can be extrapolated into the future, it is highly likely that responsive hydrogelWith such properties can been made.
Journal ArticleDOI
Microfluidics: Fluid physics at the nanoliter scale
Todd M. Squires,Stephen R. Quake +1 more
TL;DR: A review of the physics of small volumes (nanoliters) of fluids is presented, as parametrized by a series of dimensionless numbers expressing the relative importance of various physical phenomena as mentioned in this paper.
Journal ArticleDOI
Structural models of primary cell walls in flowering plants: consistency of molecular structure with the physical properties of the walls during growth
TL;DR: This review integrates information on the chemical structure of individual polymers with data obtained from new techniques used to probe the arrangement of the polymers within the walls of individual cells consistent with the physical properties of the wall and its components.
Journal ArticleDOI
Thermo- and pH-responsive polymers in drug delivery.
TL;DR: The majority of examples, discussed in this paper, deal with pH-responsive drug delivery system, and Thermo-responsive polymer is also covered to a large extent, as well as double-responsive system.
Journal ArticleDOI
Functional hydrogel structures for autonomous flow control inside microfluidic channels
David J. Beebe,Jeffrey S. Moore,Joseph M. Bauer,Qing Yu,Robin H. Liu,Chelladurai Devadoss,Byung Ho Jo +6 more
TL;DR: The fabrication of active hydrogel components inside microchannels via direct photopatterning of a liquid phase greatly simplifies system construction and assembly as the functional components are fabricated in situ, and the stimuli-responsive hydrogels components perform both sensing and actuation functions.
References
More filters
Journal ArticleDOI
Collapse of Gels and the Critical Endpoint
TL;DR: In this article, the authors explain the collapse of polyacrylamide gels in terms of mean field theory based on the extension of Flory's formula for free energy of gels.
Journal ArticleDOI
Transition in swollen polymer networks induced by intramolecular condensation
Karel Dušek,D. Patterson +1 more
TL;DR: In this paper, the critical conditions for the phase transition of a gel in free swelling and under uniaxial tension were calculated for the gel under tension and free swelling, respectively, and it was concluded that it would be difficult to attain the conditions necessary for the transition in the free-swelling case, but that it should be possible under tension.
Journal ArticleDOI