Main-chain chiral smectic liquid-crystalline ionomers containing sulfonic acid groups

2005 ◽  
Vol 99 (3) ◽  
pp. 1254-1263 ◽  
Author(s):  
Mei Tian ◽  
Bao-Yan Zhang ◽  
Fan-Bao Meng ◽  
Bao-Ling Zang
Keyword(s):  
Sulfonic Acid ◽  
Liquid Crystalline ◽  
Main Chain ◽  
Sulfonic Acid Groups

Mesomorphic phases of main-chain liquid-crystalline polymers with pendent sulfonic acid groups

2008 ◽  
Vol 110 (2) ◽  
pp. 791-797 ◽  
Author(s):  
Qian-Yue Li ◽  
Fan-Bao Meng ◽  
Bao-Yan Zhang ◽  
Mei Tian ◽  
Jiao Lian
Keyword(s):  
Sulfonic Acid ◽  
Liquid Crystalline ◽  
Main Chain ◽  
Liquid Crystalline Polymers ◽  
Crystalline Polymers ◽  
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

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

Sulfonated aromatic copoly(ether–amide) membranes II

2017 ◽  
Vol 30 (4) ◽  
pp. 437-445 ◽  
Author(s):  
Wadi Elim Sosa-González ◽  
Ramón del Jesús Palí-Casanova ◽  
Yamile Pérez-Padilla ◽  
María Isabel Loría-Bastarrachea ◽  
José Luis Santiago-García ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Sulfonic Acid ◽  
Main Chain ◽  
Exchange Capacity ◽  
Proton Nuclear Magnetic Resonance ◽  
Polycondensation Reaction ◽  
Aromatic Diamines ◽  
Ion Exchange Capacity ◽  
Sulfonation Degree ◽  
Sulfonic Acid Groups

Several aromatic sulfonated copoly(ether–amide)s, based on the aromatic diamines 4,4′-(hexafluoroisopropylidene)bis(p-phenyleneoxy)-dianiline (HFD) and 2,4-diaminobenzensulfonic acid (DABS) and 4,4′-oxybis(benzoic acid) (OBA), were synthesized through a polycondensation reaction. The sulfonation degree was controlled by introducing different concentrations of 2,4-DABS from 40 mol% up to 80 mol%. Proton nuclear magnetic resonance validated the expected concentrations of sulfonic acid groups in the sulfonated aromatic copoly(ether–amide)s. Thermal decomposition of sulfonic groups was found to initiate at 280°C, while main chain decomposition initiates at 410°C. Proton conductivity between 30°C and 75°C was 19.0 and 45.0 mS/cm, respectively, for the copolymer with the highest concentration of sulfonic groups (–SO3H). Comparison with structurally similar sulfonated copolyamides and copoly(ether–amide)s indicates that these new sulfonated copoly(ether–amide)s based on 4,4′-OBA show improved mechanical properties, but a decrease in ion exchange capacity and proton conductivity.

Synthesis and characterization of chiral liquid-crystalline polysiloxanes containing fluorinated units and sulfonic acid groups

2008 ◽  
Vol 19 (9) ◽  
pp. 1242-1249 ◽  
Author(s):  
Fan-Bao Meng ◽  
Yan-Hui Sun ◽  
Yong-Mei Gao ◽  
Xian-Gen Song ◽  
Bao-Yan Zhang
Keyword(s):  
Sulfonic Acid ◽  
Liquid Crystalline ◽  
Synthesis And Characterization ◽  
Sulfonic Acid Groups

Liquid-Crystalline Elastomers Containing Sulfonic Acid Groups

2003 ◽  
Vol 36 (9) ◽  
pp. 3320-3326 ◽  
Author(s):  
Bao-Yan Zhang ◽  
Fan-Bao Meng ◽  
Bao-Ling Zang ◽  
Jian-she Hu
Keyword(s):  
Sulfonic Acid ◽  
Liquid Crystalline ◽  
Sulfonic Acid Groups
Sign in / Sign up

Export Citation Format

Share Document