Synthesis and mesomorphic properties of side-chain liquid crystalline ionomers containing sulfonic acid groups

2007 ◽  
Vol 104 (1) ◽  
pp. 304-309 ◽  
Author(s):  
Bao-Yan Zhang ◽  
Qiu-Ju Sun ◽  
Mei Tian ◽  
Shi-Chao Ren
Keyword(s):  
Sulfonic Acid ◽  
Liquid Crystalline ◽  
Side Chain ◽  
Mesomorphic Properties ◽  
Sulfonic Acid Groups

Chiral Liquid Crystalline Ionomers Containing Sulfonic Acid Groups and Isosorbide

2013 ◽  
Vol 385-386 ◽  
pp. 39-42
Author(s):  
Zhi Xin Xu ◽  
Li Gao ◽  
Dan Shu Yao ◽  
Xiao Zhi He ◽  
Mei Tian
Keyword(s):  
Sulfonic Acid ◽  
Liquid Crystalline ◽  
Sulfonic Acid Groups

The Effect of Hydrogen Bonding on the Mesomorphic Properties for Side Chain Type Liquid Crystalline Polyurethanes

1996 ◽  
Vol 425 ◽  
Author(s):  
T. Mihara ◽  
N. Koide
Keyword(s):  
Hydrogen Bonding ◽  
Liquid Crystalline ◽  
Side Chain ◽  
Flexible Chain ◽  
Remarkable Change ◽  
Polymer Backbone ◽  
Phase Transition Temperatures ◽  
Ft Ir ◽  
Mesomorphic Properties ◽  
Chain Type

AbstractMesomorphic properties and temperature dependence of the hydrogen bonding between urethane bonds (H-bonding) for side chain type liquid crystalline polyurethane(SLCPU)s were studied by thermally controlled FT-IR spectroscopy. A remarkable change in the strength of H-bonding for SLCPUs with a flexible chain in the polymer backbone(flexible SLCPUs) was displayed near the phase transition temperatures, while small changes in the strength of H-bonding for SLCPUs with a rigid moiety in the polymer backbone(rigid SLCPUs) was influenced by a mesogenic group in the side chain and the flexible chain length in the polymer backbone. Furthermore, in order to study the influence of H-bonding in rigid SLCPUs, polyurethane derivatives with methyl group were synthesized replacing hydrogen in urethane bonds. No mesomorphic properties for polyurethane derivatives obtained were exhibited. It was concluded that H-bonding played an important role to exhibit mesomorphic properties of rigid SLCPUs.

Liquid-crystalline elastomers produced by chemical crosslinking agents containing sulfonic acid groups

Polymer ◽  
2003 ◽  
Vol 44 (14) ◽  
pp. 3935-3943 ◽  
Author(s):  
Fanbao Meng ◽  
Baoyan Zhang ◽  
Lumei Liu ◽  
Baoling Zang
Keyword(s):  
Sulfonic Acid ◽  
Liquid Crystalline ◽  
Chemical Crosslinking ◽  
Sulfonic Acid Groups ◽  
Crosslinking Agents
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