Abstract
Small-angle neutron scattering is used to determine the temperature dependence of the lamellar repeat distance in an aqueous multilamellar solution of phospholipid bilayers. A thermal anomaly in the swelling behavior is observed at the bilayer phase transition. The anomalous behavior can be suppressed by varying the lipid acyl-chain length or by alloying with a molecular stiffening agent. The experimental results are explained in terms of renormalization of the bilayer curvature elasticity and by using a theory of repulsive interlamellar undulation forces.
Original language | English |
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Journal | Physical Review Letters |
Volume | 72 |
Issue number | 24 |
Pages (from-to) | 3911-3914 |
ISSN | 0031-9007 |
DOIs | |
Publication status | Published - 13 Jun 1994 |
Bibliographical note
Copyright (1994) by the American Physical Society.Keywords
- FLUCTUATIONS
- SYNCHROTRON X-RAY
- MEMBRANES
- PHASE-TRANSITION
- LAMELLAR PHASES
- PHYSICAL-PROPERTIES
- STERIC INTERACTIONS
- LIQUID-CRYSTAL
- DEPENDENCE
- NEUTRON-DIFFRACTION