The Langmuir film behavior of fluorine-containing side chain liquid crystal
copolysiloxanes at the air-water interface has been studied over a tempera
ture range of 277.5-310 K. The surface pressure-area isotherms exhibited a
transition from an expanded to a condensed phase. In the expanded phases th
e main chains of the polymers were anchored at the air-water interface. In
the condensed phases the extension or partial exclusion of the main chains
at the air-water interface was mainly controlled by the cross-sectional are
a of the side chain. The transferred Langmuir-Blodgett (LB) multilayer did
not give any X-ray diffraction peak. With heating, a molecular ordering of
the LB film was induced so that the film showed the Bragg diffraction peak.
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