ISSN:
0887-624X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Some members of four series of polyesters were synthesized by the direct polycondensation of two types of dicarboxylic acids (4,4′-dicarboxy-α,ω-diphenoxyalkanes and 4,4′-dicarboxy-α,ω-dibenzoyloxyalkanes) with two types of bisphenols (4,4′-dihydroxy-α,ω-diphenoxyalkanes and 4,4′-dihydroxy-α,ω-dibenzoyloxyalkanes) using tosyl chloride in pyridine in the presence of N, N-dimethylformamide. The 1H-NMR spectra of the polymers synthesized showed that these polymers have an ordenated structure. The mesogenic properties of these polymers were studied by optical microscopy and differential scanning calorimetry. Many of the polymers show nematic mesomorphism.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pola.1990.080280402
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