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Volume : I, Issue : VII, August - 2011 SYNTHESIS AND CHARACTERIZATION OF NOVELCOPOLYESTERS FROM4,4'-OXYBIS(BENZOIC ACID) N. Malathy,D. Roop Singh DOI : 10.9780/22307850, Published By : Laxmi Book Publication Abstract : Four new thermotropic liquid crystalline random copolyesters with ethereal
linkages were prepared from mesogenic 4,4'-oxybis(benzoic acid) by direct
polycondensation with different aliphatic and aromatic diols in pyridine solution.
Diphenylchlorophosphate (DPCP) was employed as the condensation agent.
Viscosity measurements, FT IR and 1H spectral data were used for investigating
their structural features. The thermal phase transitions and thermotropic liquid
crystalline (TLC) behaviour of these polymers were investigated differential
scanning calorimetry (DSC) Keywords : Article : Cite This Article : N. Malathy,D. Roop Singh, (2011). SYNTHESIS AND CHARACTERIZATION OF NOVELCOPOLYESTERS FROM4,4'-OXYBIS(BENZOIC ACID). Indian Streams Research Journal, Vol. I, Issue. VII, DOI : 10.9780/22307850, http://oldisrj.lbp.world/UploadedData/420.pdf References : - Ikeda. T., Itakena H. Lee., C. Winmik, F.M. and Tazuke.S.,Macromolecules 21, 3537 (1988).
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