Citation: Wei Deng, Annie Br?let, Pierre-Antoine Albouy, Patrick Keller, Xiaogong Wang, Min-Hui Li. MORPHOLOGY STUDY OF A SERIES OF AZOBENZENE-CONTAINING SIDE-ON LIQUID CRYSTALLINE TRIBLOCK COPOLYMERS[J]. Chinese Journal of Polymer Science, ;2012, 30(2): 258-268. doi: 10.1007/s10118-012-1117-3 shu

MORPHOLOGY STUDY OF A SERIES OF AZOBENZENE-CONTAINING SIDE-ON LIQUID CRYSTALLINE TRIBLOCK COPOLYMERS

Received Date: 22 April 2011
Revised Date: 8 June 2011

Fund Project: This work was financially supported by the French Embassy in China (Beijing) to Wei Deng (Bourse doctorale en alternance 2004-2007).

A series of azobenzene containing side-on liquid crystalline ABA triblock copolymers were investigated. This triblock series possesses the same central liquid crystal block B and various lengths of the amorphous block A. Transmission electron microscopy (TEM), small angle X-rays and neutron scattering (SAXS and SANS) were used to study their morphologies. After annealing the samples over weeks at a temperature within the nematic temperature range of block B, different morphologies (disordered, lamellar, perforated layer and hexagonal cylinder) were observed by TEM. The alignment behavior of these azo triblock copolymers in the magnetic field for artificial muscle application, as well as the phase period and the order-disorder transition (ODT) were studied in situ by SANS.
- Side-on liquid crystal
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