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Lattice model of a hydrogen-bonded polymer blend.
- Source :
-
Journal of Chemical Physics . 7/8/1996, Vol. 105 Issue 2, p738. 11p. - Publication Year :
- 1996
-
Abstract
- A mean-field lattice model is used to investigate some possible aspects of the low-temperature behavior of a lower critical solution temperature (LCST) polymer blend made miscible by a dilute distribution of a hydrogen-bonding comonomer. The nature of the binding interaction is examined for both a random comonomer distribution and for the case of identically end-modified chains. For the latter case, competition between the interaction responsible for the immiscibility of the homopolymer components and the attraction due to hydrogen bonding leads to a stable intermediate phase. For random distributions, polydispersity in the binding interaction restricts this intermediate phase to an extremely narrow window in reduced temperature, consistent with a ‘‘smeared’’ transition. The free-energy landscape contains local minima separated by energy barriers. © 1996 American Institute of Physics. [ABSTRACT FROM AUTHOR]
- Subjects :
- *HYDROGEN
*MEAN field theory
*MAXIMA & minima
Subjects
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 105
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 9592489
- Full Text :
- https://doi.org/10.1063/1.471929