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New Architecture of Liquid‐Crystalline Polymers from Fluorinated Vinylcyclopropanes
Author(s) -
Galli Giancarlo,
Gasperetti Silvia,
Bertolucci Massimo,
Gallot Bernard,
Chiellini Federica
Publication year - 2002
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(20021001)23:14<814::aid-marc814>3.0.co;2-t
Subject(s) - polymer , fluorocarbon , monomer , copolymer , polymer chemistry , cyclobutane , materials science , hydrocarbon , liquid crystalline , phase (matter) , ring (chemistry) , polymer science , organic chemistry , chemistry , composite material
A new class of fluorinated polymers was prepared by radical ring‐opening homopolymerization of vinylcyclopropane monomers with a perfluorinated (CF 2 ) n F chain ( n = 6, 8, or 10). The polymers were in fact copolymers composed of 1,5‐linear and cyclobutane isomer units, the relative content of which depended on n . Surprisingly, they formed liquid‐crystalline mesophases (SmB d and/or SmA d ), which was attributed to phase separation of the incompatible fluorocarbon and hydrocarbon components of the repeat unit.