Document Detail


Dynamical dimer structure and liquid structure of fatty acids in their binary liquid mixture: dodecanoic and 3-phenylpropionic acids system.
MedLine Citation:
PMID:  15081860     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
Makio Iwahashi; Shintaro Takebayashi; Atsushi Umehara; Yasutoshi Kasahara; Hideyuki Minami; Hideyo Matsuzawa; Tohru Inoue; Hiroshi Takahashi
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Chemistry and physics of lipids     Volume:  129     ISSN:  0009-3084     ISO Abbreviation:  Chem. Phys. Lipids     Publication Date:  2004 May 
Date Detail:
Created Date:  2004-04-14     Completed Date:  2004-12-14     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0067206     Medline TA:  Chem Phys Lipids     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  195-208     Citation Subset:  IM    
Affiliation:
Department of Chemistry, School of Science, Kitasato University, 1-15-1 Kitasato, Sagamihara, Kanagawa-ken 228-8555, Japan. maki@kitasato-u.ac.jp
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MeSH Terms
Descriptor/Qualifier:
Calorimetry, Differential Scanning
Dimerization
Fatty Acids / chemistry*
Lauric Acids / chemistry*
Magnetic Resonance Spectroscopy
Phase Transition*
Phenylpropionates / chemistry*
Viscosity
Chemical
Reg. No./Substance:
0/Fatty Acids; 0/Lauric Acids; 0/Phenylpropionates; 143-07-7/lauric acid; 501-52-0/3-phenylpropionic acid

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