TEMPERATURE-INDUCED PHASE-TRANSITION OF SEMIINTERPENETRATING POLYMER NETWORKS COMPOSED OF POLY(N-ISOPROPYL ACRYLAMIDE) AND HYDROPHILIC POLYMERS

Authors
SHIN BC JHON MS LEE HB YUK SH
Citation
Bc. Shin et al., TEMPERATURE-INDUCED PHASE-TRANSITION OF SEMIINTERPENETRATING POLYMER NETWORKS COMPOSED OF POLY(N-ISOPROPYL ACRYLAMIDE) AND HYDROPHILIC POLYMERS, European Polymer Journal, 34(2), 1998, pp. 171-174
Citations number
13
Categorie Soggetti
Polymer Sciences
Journal title
European Polymer Journal → ACNP
ISSN journal
00143057
Volume
34
Issue
2
Year of publication
1998
Pages
171 - 174
Database
ISI
SICI code
0014-3057(1998)34:2<171:TPOSPN>2.0.ZU;2-N
Abstract
Semi-interpenetrating networks (semi-IPNs) composed of poly(N-isopropy lacrylamide) and various hydrophilic polymers were prepared to observe the temperature-induced phase transition. With the formation of semi- IPNs, the lower critical solution temperature (LCST) was shifted to lo wer values, probably due to intermolecular interactions such as hydrog en bonding in the gel network. Cloud point measurement and differentia l scanning calorimetry (DSC) show that the formation of hydrogen bonds in the semi-IPNs played an important role in the shift of LCST. (C) 1 998 Elsevier Science Ltd. All rights reserved.