Molecular weights and solution properties of a series of side-chain liquid crystalline polymers with ethylene oxide spacers

1987 ◽  
Vol 20 (11) ◽  
pp. 2853-2858 ◽  
Author(s):  
R. Duran ◽  
C. Strazielle
Keyword(s):  
Ethylene Oxide ◽  
Liquid Crystalline ◽  
Liquid Crystalline Polymers ◽  
Side Chain ◽  
Solution Properties ◽  
Crystalline Polymers ◽  
Molecular Weights

A New Series of Two-Ring-Based Side Chain Liquid Crystalline Polymers: Synthesis and Mesophase Characterization

2013 ◽  
Vol 66 (6) ◽  
pp. 667 ◽  
Author(s):  
Goddeti Siva Mohan Reddy ◽  
Tanneru Narasimhaswamy ◽  
Jarugala Jayaramudu ◽  
Emmanuel Rotimi Sadiku ◽  
Konduru Mohana Raju ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Variable Temperature ◽  
Liquid Crystalline Polymers ◽  
Side Chain ◽  
Scanning Calorimetry ◽  
Crystalline Polymers ◽  
Molecular Weights ◽  
Smectic C ◽  
Phenyl Rings ◽  
Alkoxy Groups

A new series of side chain liquid crystalline polymers containing a core, a butamethylenoxy spacer, ester groups, and terminal alkoxy groups were synthesised and their structures were confirmed. The core was constructed with two phenyl rings and an ester linking unit. All the polymers were characterised by hot-stage polarising optical microscopy, differential scanning calorimetry, variable temperature X-ray diffraction, thermogravimetric analysis, and gel permeation chromato-graphy. The polymers were found to be liquid crystalline. The nematic and smectic A (SA) phases were observed for the homologues with short-terminal chains (C2 and C6), whereas the homologues with longer chains (C8 to C12) exhibited a smectic C phase. The thermal stability of the polymers was found to be in the range of 293 to 326°C and the molecular weights of the polymers were found to vary from 6 × 103 to 1.3 × 104.

scholarly journals Phase Transitions of Side Chain Liquid Crystalline Polymers Having a Terminal Alkyl Chain.

1993 ◽  
Vol 50 (9) ◽  
pp. 687-691 ◽  
Author(s):  
Seiji UJIIE ◽  
Tamami FUKUI ◽  
Kazuko HIGAKI ◽  
Satoshi TAKAHASHI ◽  
Kazuyoshi IIMURA
Keyword(s):  
Phase Transitions ◽  
Liquid Crystalline ◽  
Alkyl Chain ◽  
Liquid Crystalline Polymers ◽  
Side Chain ◽  
Crystalline Polymers
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