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- Title
Investigation of Phase Transition in the One-Dimensional Phospholipids Model by Combinatorial Factor Method.
- Authors
Ranjbar, S.; Taslimian, S.
- Abstract
In this study, using a one-dimensional phospholipids model, we have introduced an exact combinatorial factor method for the investigation of order-disorder in the phospholipids lattice. Our assumption was that the lattice was composed of six groups, and for simplicity, we assumed that the total energy of the lattice can be considered as the rotational energy of gauche molecules and the nearest neighbor interactions between trans molecules. Using the combinatorial factor method (CFM), the total energy and the corresponding constrains, the Helmholtz free energy was minimized. Finally, the thermodynamic properties of the one-dimensional lattice including the internal energy, entropy, and heat capacity were determined, exactly. The results show that, adopting such a model and under specific conditions, a phase transition, similar to the one in Onsager transition, takes place.
- Subjects
PHOSPHOLIPIDS; COMBINATORIAL chemistry; PHASE transitions; MOLECULES; THERMODYNAMICS; ORDER-disorder models; LATTICE dynamics
- Publication
Journal of the Iranian Chemical Society, 2011, Vol 8, Issue 2, p574
- ISSN
1735-207X
- Publication type
Article
- DOI
10.1007/BF03249093