CHANGE IN YOUNGS MODULUS OF POLY(N-ISOPROPYLACRYLAMIDE) GELS BY VOLUME PHASE-TRANSITION

Authors
TAKIGAWA T YAMAWAKI T TAKAHASHI K MASUDA T
Citation
T. Takigawa et al., CHANGE IN YOUNGS MODULUS OF POLY(N-ISOPROPYLACRYLAMIDE) GELS BY VOLUME PHASE-TRANSITION, Polymer gels and networks, 5(6), 1997, pp. 585-589
Citations number
6
Journal title
Polymer gels and networks → ACNP
ISSN journal
09667822
Volume
5
Issue
6
Year of publication
1997
Pages
585 - 589
Database
ISI
SICI code
0966-7822(1997)5:6<585:CIYMOP>2.0.ZU;2-9
Abstract
Mechanical properties of poly(N-isopropylacrylamide) (PNIPA) gels were examined both in swollen and collapsed state. Stress-strain curve of the gel in the swollen state was linear and the collapsed gel also sho wed almost linear stress-strain behavior. The initial Young's modulus (E-0,) in the collapsed state was much higher than that in the swollen state. The number of cross-links increased largely by the introductio n of the physical cross-links due to collapse of the gels. (C) 1998 El sevier Science Ltd. Ail rights reserved.