Synthesis and thermal behaviour of new poly(azomethine-ether)

A new poly(azomethine-ether) was synthesized by the reaction of bisphenol A with a thermotropic azomethine monomer, namely 4,4′-oxy-bis(4-chlorobenzylideneimino phenylene). In order to understand the influence of the molecular weight on the thermal properties, four fractions were isolated from the i...

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Bibliographic Details
Published in:European polymer journal 2006-05, Vol.42 (5), p.1173-1182
Main Authors: Marin, Luminita, Cozan, Vasile, Bruma, Maria, Grigoras, Vasile Cristian
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Liquid crystal
Organic polymers
Physicochemistry of polymers
Polyazomethine
Polymers with particular structures
Preparation, kinetics, thermodynamics, mechanism and catalysts
Thermotropic
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Summary:A new poly(azomethine-ether) was synthesized by the reaction of bisphenol A with a thermotropic azomethine monomer, namely 4,4′-oxy-bis(4-chlorobenzylideneimino phenylene). In order to understand the influence of the molecular weight on the thermal properties, four fractions were isolated from the initial polymer. They were investigated by elemental analysis and spectroscopic methods (IR, UV, 1H NMR) and their thermal behaviour was studied by differential scanning calorimetry, optical microscopy, thermogravimetrical analysis. An increase of the thermal transition temperatures and mesophase order with increasing molecular weight was noticed.
ISSN:0014-3057
1873-1945
DOI:10.1016/j.eurpolymj.2005.11.010