Diffusion Coefficients in Thermosensitive Poly(NIPAAm) Hydrogels

Diffusion coefficients for the moving boundary thermosensitive poly(N‐isopropylacrylamide) hydrogels, which were swelled to equilibrium in aqueous solutions of either BSA or phenol, have been determined. Using a uniaxial compression apparatus the collective (Dcol) and with confocal Raman spectroscop...

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Bibliographic Details
Published in:Macromolecular symposia. 2011-09, Vol.306-307 (1), p.150-165
Main Authors: Naddaf, Aisha A., Bart, Hans-Jörg
Format: Article
Language:English
Subjects:
Boundaries
Compressing
Confocal
Cylinders
Diffusion coefficient
Hydrogels
mechanical properties
Modulus of elasticity
poly(NIPAAm) hydrogel
Thermosensitive
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Summary:Diffusion coefficients for the moving boundary thermosensitive poly(N‐isopropylacrylamide) hydrogels, which were swelled to equilibrium in aqueous solutions of either BSA or phenol, have been determined. Using a uniaxial compression apparatus the collective (Dcol) and with confocal Raman spectroscopy the mutual (Dmut) diffusion coefficients were estimated. The solute distribution in the hydrogel in addition to the effect of the swelling ratio, the cross‐linking ratio and the hydrogel cylinder thickness on the Young's modulus were investigated.
ISSN:1022-1360
1521-3900
1521-3900
DOI:10.1002/masy.201000129