PH EFFECT ON CORRELATION BETWEEN WATER STATE AND SWELLING KINETICS OFTHE CROSS-LINKED CHITOSAN POLYETHER SEMI-IPN HYDROGEL/

Authors
GUAN YL SHAO L LIU J DEYAO K
Citation
Yl. Guan et al., PH EFFECT ON CORRELATION BETWEEN WATER STATE AND SWELLING KINETICS OFTHE CROSS-LINKED CHITOSAN POLYETHER SEMI-IPN HYDROGEL/, Journal of applied polymer science, 62(8), 1996, pp. 1253-1258
Citations number
10
Categorie Soggetti
Polymer Sciences
Journal title
Journal of applied polymer science → ACNP
ISSN journal
00218995
Volume
62
Issue
8
Year of publication
1996
Pages
1253 - 1258
Database
ISI
SICI code
0021-8995(1996)62:8<1253:PEOCBW>2.0.ZU;2-T
Abstract
The water state in crosslinked chitosan/polyether semi-IPN(cr-CS/PE se mi-IPN) hydrogels swollen in buffer solutions with various pH values w as studied using differential scanning calorimetry (DSC). The results show that the total water content and the amount of bound water is rel ated to the pH values of the swelling medium. The swelling kinetics of the hydrogel was investigated as well. The diffusion coefficient is c orrelated with the water state of the swollen hydrogel. It suggests th at the change in the diffusion coefficient is related to the relative composition of bound water and nonbound water. (C) 1996 John Wiley & S ons, Inc.