Characterization of temperature-induced phase transition of polymer complex composed of poly-(N,N-dimethylamino)ethyl methacrylate and poly(ethylacrylamide) by H-1-NMR relaxation time measurement

Authors
Park, SY Cho, SH Yuk, SH Jhon, MS
Citation
Sy. Park et al., Characterization of temperature-induced phase transition of polymer complex composed of poly-(N,N-dimethylamino)ethyl methacrylate and poly(ethylacrylamide) by H-1-NMR relaxation time measurement, EUR POLYM J, 37(9), 2001, pp. 1785-1790
Citations number
27
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
EUROPEAN POLYMER JOURNAL
ISSN journal
00143057 → ACNP
Volume
37
Issue
9
Year of publication
2001
Pages
1785 - 1790
Database
ISI
SICI code
0014-3057(200109)37:9<1785:COTPTO>2.0.ZU;2-2
Abstract
A new temperature-responsive polymer system with transitions resulting from both polymer-water and polymer-polymer interactions has been demonstrated using the mixture of poly(N,N-dimethylamino)ethyl methacrylate (DMAEMA) and poly(ethylacrylamide) (EAAm). The structure and dynamic motions of the mix ture of poly(DMAEMA) and poly(EAAm) were studied in comparison with that of poly(DMAEMA-co-EAAm) by H-1 spin-lattice relaxation time. The Ti values co rresponding to two peaks of the poly(DMAEMA-co- EAAm) at 15 degreesC have l ong relaxation times relative to the mixture of poly(DMAEMA) and poly(EAAm) . This suggests that there exist the structural difference in the temperatu re-induced phase transition between poly(DMAEMA-co-EAAm) and the mixture of poly(DMAEMA) and poly(EAAm). (C) 2001 Elsevier Science Ltd. All rights res erved.