Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/3643
Título: Demixing instability in coil-rod blends undergoing polycondensation reactions
Autor: Teixeira, Paulo Ivo Cortez
Palavras-chave: Flexible Polyurethane Foam
Copolymer Melts
Polymer-Solutions
Synchrotron Saxs
Nematic Polymers
Block-Copolymers
Thermodynamics
Transition
Mixtures
Systems
Data: 21-Fev-2007
Editora: Amer Inst Physics
Citação: TEIXEIRA, P. I. C.; BUESCU, J. - Demixing instability in coil-rod blends undergoing polycondensation reactions. Journal of Chemical Physics . ISSN 0021-9606. Vol. 126, nr.7 (2007), p. 074901-1/074901-9.
Relatório da Série N.º: ;074901
Resumo: The authors extend their earlier work on the stability of a reacting binary polymer blend with respect to demixing [D. J. Read, Macromolecules 31, 899 (1998); P. I. C. Teixeira , Macromolecules 33, 387 (2000)] to the case where one of the polymers is rod-like and may order nematically. As before, the authors combine the random phase approximation for the free energy with a Markov chain model for the chemistry to obtain the spinodal as a function of the relevant degrees of reaction. These are then calculated by assuming a simple second-order chemical kinetics. Results are presented, for linear systems, which illustrate the effects of varying the proportion of coils and rods, their relative sizes, and the strength of the nematic interaction between the rods. (c) 2007 American Institute of Physics.
Peer review: yes
URI: http://hdl.handle.net/10400.21/3643
ISSN: 0021-9606
Versão do Editor: http://scitation.aip.org/content/aip/journal/jcp/126/7/10.1063/1.2437200
Aparece nas colecções:ISEL - Física - Artigos

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