Dynamical dimer structure and liquid structure of fatty acids in their binary liquid mixture: dodecanoic and 3-phenylpropionic acids system.
Chem Phys Lipids
; 129(2): 195-208, 2004 May.
Article
em En
| MEDLINE
| ID: mdl-15081860
ABSTRACT
Dimer structure and liquid structure of fatty acids in the binary liquid mixture of dodecanoic (LA) and 3-phenylpropionic acids (PPA) were studied through the measurements of DSC, self-diffusion coefficient (D), density, viscosity, 13C NMR spin-lattice relaxation time, small-angle X-ray scattering (SAXS), and small-angle neutron scattering (SANS). The phase diagram of LA/PPA mixture exhibited a typical eutectic pattern, which means that LA and PPA are completely immiscible in solid phase. In the liquid phase of the LA/PPA mixture, D of LA always differed from that of PPA irrespective of their compositions. This exhibited that, in the liquid phase of the binary mixture of fatty acids giving a complete eutectic in the solid phase, the fatty acid dimers are composed of the same fatty acid species irrespective of their compositions. The liquid structure of the LA/PPA mixture was clarified through the SAXS and also the SANS measurements.
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Base de dados:
MEDLINE
Assunto principal:
Fenilpropionatos
/
Transição de Fase
/
Ácidos Graxos
/
Ácidos Láuricos
Idioma:
En
Revista:
Chem Phys Lipids
Ano de publicação:
2004
Tipo de documento:
Article
País de afiliação:
Japão