Conformational Behavior of the Spacer in a Liquid Crystalline Main-Chain Polymer in Its Nematic and Glassy States

1995 ◽  
Vol 28 (20) ◽  
pp. 6937-6941 ◽  
Author(s):  
J. Leisen ◽  
C. Boeffel ◽  
H. W. Spiess ◽  
D. Y. Yoon ◽  
M. H. Sherwood ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Main Chain ◽  
Conformational Behavior ◽  
Chain Polymer

The formation of a liquid crystalline main chain polymer by means of photopolymerization

1998 ◽  
Vol 24 (3) ◽  
pp. 375-379 ◽  
Author(s):  
J. LUB ◽  
D. J. BROER ◽  
M. E. MARTINEZ ANTONIO ◽  
G. N. MOL
Keyword(s):  
Liquid Crystalline ◽  
Main Chain ◽  
Chain Polymer

Ordering and dewetting in spin-coated films of a liquid crystalline main chain polymer

2006 ◽  
Vol 514 (1-2) ◽  
pp. 165-173 ◽  
Author(s):  
Beate Sapich ◽  
Armelle B.E. Vix ◽  
Jürgen P. Rabe ◽  
Joachim Stumpe ◽  
Götz Wilbert ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Main Chain ◽  
Chain Polymer

Liquid crystalline elastomers as artificial muscles

e-Polymers ◽  
2001 ◽  
Vol 1 (1) ◽  
Author(s):  
Hendrik Wermter ◽  
Heino Finkelmann
Keyword(s):  
Liquid Crystalline ◽  
Main Chain ◽  
Side Chain ◽  
Artificial Muscles ◽  
Chain Polymer ◽  
Mechanical Field ◽  
Crosslinking Process ◽  
Director Reorientation ◽  
Main Chain Polymers ◽  
Reorientation Process

AbstractNew nematic co-elastomers were synthesized which consist of a combination of nematic side- and main-chain polymers and where the liquid crystalline main-chain polymer can be considered as a macromolecular crosslinking component. By applying a mechanical field during the crosslinking process, the director of the nematic phase becomes macroscopically uniformly aligned and liquid-single-crystal elastomers were obtained. Within a narrow temperature regime, these networks can change their shape in one dimension by a factor > 3 and considerably improve the ability of being used as artificial muscles or mechanical actuators compared to the well known nematic side-chain elastomers. Networks having a non-ordered polydomain structure exhibit “soft (or semi-soft) elasticity” which is not only determined by a director reorientation process. Obviously, hairpin conformations within the main-chain segments contribute to this effect.

Free volumes in liquid-crystalline main-chain polymer probed by positron annihilation

1995 ◽  
Vol 33 (6) ◽  
pp. 891-897 ◽  
Author(s):  
A. Uedono ◽  
R. Sadamoto ◽  
T. Kawano ◽  
S. Tanigawa ◽  
T. Uryu
Keyword(s):  
Positron Annihilation ◽  
Liquid Crystalline ◽  
Main Chain ◽  
Chain Polymer

Phase behavior and elastic properties of a slightly crosslinked liquid crystalline main-chain polymer

1990 ◽  
Vol 268 (3) ◽  
pp. 222-229 ◽  
Author(s):  
K. -H. Hanus ◽  
W. Pechhold ◽  
F. Soergel ◽  
B. Stoll ◽  
R. Zentel
Keyword(s):  
Phase Behavior ◽  
Elastic Properties ◽  
Liquid Crystalline ◽  
Main Chain ◽  
Chain Polymer
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