Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 102, Issue 6, Pages 5490-5499Publisher
JOHN WILEY & SONS INC
DOI: 10.1002/app.23912
Keywords
hydrogels; macroporous polymers; separation techniques; stimuli-sensitive polymers; swelling
Categories
Ask authors/readers for more resources
A series of porous thermoreversible hydrogels were prepared from N-isopropylacrylamide (90 mol %) and poly(ethylene glycol) methylether acrylate (10 mol %), which was derived from poly(ethylene glycol) monomethylether, N,N'-methylenebisacrylamide, and porosigen, or poly (ethylene glycol) (PEG) with different molecular weights (MWs). The influence of pore volume in the gel on the physical properties, swelling kinetics, and solute permeation from these porous gels was investigated. The results show that the surface areas, pore volumes, and equilibrium swelling ratios for the porous gets increased with increasing MW of PEG, but the shear moduli and effective crosslinking densities decreased with increasing MW of PEG. The results from the dynamic swelling kinetics show that the transport mechanism was non-Fickian. The diffusion coefficients of water penetrating into the gels increased with increasing pore volume of the gels. In addition, we also studied solute permeation through the porous gel controlled by temperature. (c) 2006 Wiley Periodicals, Inc.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available