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Liquid crystalline networks of polymethacrylates
Author(s) -
Pfaffernoschke Matthias,
Wolff Dietmar,
Rübner Joachim,
Springer Jürgen
Publication year - 1996
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1996.021971028
Subject(s) - swelling , copolymer , phase (matter) , methacrylate , materials science , polymer chemistry , liquid crystalline , precipitation , component (thermodynamics) , chemical engineering , diffraction , orientation (vector space) , composite material , chemistry , organic chemistry , polymer , optics , thermodynamics , physics , geometry , mathematics , meteorology , engineering
LC networks on the basis of methacrylate and dimethacrylate components were synthesized via bulk and precipitation copolymerization. Up to an amount of crosslinking component of 1 mol‐% a smetic A phase is observed. The networks with 3 and 5 mol‐% only show a nematic phase. From X‐ray diffraction an orientation of the smectic phase was observed that derives from surface effects or biaxial swelling. It was found that the orientation can be increased by multiple swelling/deswelling cycles.