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Amphiphilic liquid‐crystalline networks — phase behavior and alignment by mechanical fields
Author(s) -
Fischer Peter,
Schmidt Claudia,
Finkelmann Heino
Publication year - 1995
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/marc.1995.030160605
Subject(s) - amphiphile , lamellar structure , alkyl , side chain , phase (matter) , lamellar phase , polymer , materials science , liquid crystal , deuterium , nuclear magnetic resonance spectroscopy , polymer chemistry , chemical engineering , chemical physics , crystallography , chemistry , organic chemistry , composite material , copolymer , physics , optoelectronics , quantum mechanics , engineering
A cross‐linked polysiloxane carrying non‐ionic amphiphilic side‐groups attached with their hydrophobic end to the polymer backbone is synthesized. The amphiphilic groups are selectively deuterated at the α‐position of the hydrophobic alkyl chains. The phase behavior with water is studied by deuterium nuclear magnetic resonance spectroscopy. A lamellar phase (L a ) is observed on the low‐water‐concentration side of the liquid‐crystalline regime. The domains of the L a ‐phase can be aligned macroscopically by uniaxial compression of the sample.