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. 2002 Jan;82(1 Pt 1):299–309. doi: 10.1016/S0006-3495(02)75395-2

Relaxation kinetics of lipid membranes and its relation to the heat capacity.

Peter Grabitz 1, Vesselka P Ivanova 1, Thomas Heimburg 1
PMCID: PMC1302470  PMID: 11751317

Abstract

We investigated the relaxation behavior of lipid membranes close to the chain-melting transition using pressure jump calorimetry with a temperature accuracy of approximately 10(-3) K. We found relaxation times in the range from seconds up to about a minute, depending on vesicular state. The relaxation times are within error proportional to the heat capacity. We provide a statistical thermodynamics theory that rationalizes the close relation between heat capacity and relaxation times. It is based on our recent finding that enthalpy and volume changes close to the melting transition are proportional functions.

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Selected References

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