Journal
INTERNATIONAL JOURNAL OF PHARMACEUTICS
Volume 269, Issue 1, Pages 185-194Publisher
ELSEVIER
DOI: 10.1016/j.ijpharm.2003.09.031
Keywords
hydrogels; drug delivery; chitosan; poly(N-isopropylacrylamide)
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The synthesis and characterisation of semi-interpenetrating polymeric networks obtained by the radical-induced polymerisation of N-isopropylacrylamide in the presence of chitosan using tetraethyleneglycoldiacrylate as the crosslinker is described. The influence of the degree of crosslinking and that of the ratio of chitosan to poly(N-isopropylacrylamide) on the pH/temperature induced phase transition behaviour and swelling characteristics of the hydrogel system are investigated. The ability of the same system to act as a controlled release vehicle for pilocarpine hydrochloride is evaluated. (C) 2003 Elsevier B.V. All rights reserved.
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