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Helical Mechanoclinic Deformation of Main‐Chain Chiral Smectic Elastomers
Author(s) -
Tashiro Tohru,
Kondo Yui,
Hiraoka Kazuyuki
Publication year - 2010
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.201000455
Subject(s) - elastomer , twist , deformation (meteorology) , materials science , tilt (camera) , polymer , helix (gastropod) , phase (matter) , composite material , crystallography , physics , geometry , chemistry , ecology , mathematics , quantum mechanics , snail , biology
The helical mechanoclinic deformation of a main‐chain chiral smectic elastomer, which is prepared by a crosslinking reaction under twist deformation, is investigated. The twist deformation induces a layer tilt angle that depends on the handedness of twist. The layer tilt angle in the right‐handedly twisted elastomer, of which the handedness is consistent with that of the helix in the SmC* phase of the non‐crosslinked backbone polymer, is estimated to be up to 16° at room temperature, although that in the left‐handedly twisted elastomer is less than several degrees. The experiments provide evidence of chiral coupling between tilt and twist for helical mechanoclinic deformation in the chiral smectic system.