| Spreading of lipid monolayers on hydrophilic substrates at increased relative humidities (2002) | |||||||||||
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| Spreading Lipid Monolayers Hydrophilic Substrates Increased Relative Humidities Tobias Baumgart and Andreas Offenha usser Max Planck Institute for Polymer Research Ackermannweg Mainz Germany Received January Final Form April self repairing ability phospholipid monolayers deposited onto thin hydrogel films was observed fluorescence microscopy terms the expansion and lateral spreading the monolayer into film defects The spreading was quantitatively analyzed covering half substrate supporting thin hydrogel film with lipid monolayer Langmuir Blodgett transfer and observing the spreading the initially confined monolayer increased relative humidities due the hydration both lipid headgroups and the polymer support During the observation time typical spreading experiment constant spreading velocity was observed strong influence monolayer pressure the spreading velocity was observed nonlinear relationship between spreading velocity and monolayer pressure was found which can possibly explained dependence the disjoining pressure the monolayer substrate interface the monolayer pressure The spreading velocity was additionally influenced the kind support and the nature phase state the deposited monolayer Introduction The phospholipid monolayer represents half the bilayer which regarded constitute among other components the compartmentalizing part biological membranes While the physicochemical parameters phospholipid monolayers more generally Langmuir monolayers the air water interface have | |||||||||||
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