Hoffmann M
Hans-Knöll-Institute for Natural Products Research, Beutenbergstr. 11a, 07745 Jena, Germany.
Eur Phys J E Soft Matter. 2005 Feb;16(2):111-23. doi: 10.1140/epje/e2005-00013-2. Epub 2005 Feb 22.
The present publication provides a detailed theoretical approach to the elastic properties of one- and two-component amphiphilic membranes. It is formulated in terms of the molecular free energy aiming at an application to molecular models. The work focuses on the bending elastic moduli and the difference between the condition of constant surface tension and constant chemical potentials. It is found that the bending modulus of mean curvature becomes negative for two-component membranes approaching the limit of phase separation at constant chemical potentials. The treatment of bilayer membranes explicitly integrates monolayer-monolayer coupling. This is beneficial for the assessment of coupling effects for specific molecular models. The article is completed by a comprehensive continuum mechanical description of one-component monolayers. Based on the generalized Laplace equation it is suggested that a simultaneous excess of oil and water is likely to preclude the existence of non-cylindrical bicontinuous phases.
本出版物提供了一种详细的理论方法来研究单组分和双组分两亲性膜的弹性性质。它是根据分子自由能来制定的，旨在应用于分子模型。这项工作重点关注弯曲弹性模量以及恒定表面张力条件和恒定化学势之间的差异。研究发现，对于在恒定化学势下接近相分离极限的双组分膜，平均曲率的弯曲模量变为负值。双层膜的处理明确整合了单层 - 单层耦合。这有利于评估特定分子模型的耦合效应。本文通过对单组分单层的全面连续介质力学描述得以完善。基于广义拉普拉斯方程，有人提出油和水同时过量可能会排除非圆柱形双连续相的存在。
