Arylidene Polymers VIII. Synthesis, Characterization and Morphology of New Polyesters Based on 2,7-Diarylidenecycloheptanone
- 1 April 1990
- journal article
- research article
- Published by SAGE Publications in High Performance Polymers
- Vol. 2 (2) , 121-131
- https://doi.org/10.1177/095400839000200204
Abstract
New polyesters have been synthesized via interfacial polycondensation of 2,7-bis(p-hydroxybenzylidene)cycloheptanone I with 4,4′-diphenic, isophthaloyl, tere-phthaloyl, adipoyl and sebacoyl dichlorides at ambient temperature. In order to characterize these polyesters a model compound II was prepared from I and benzoyl chloride. The resulting polyesters were characterized by IR, 1H-NMR, elemental analyses, viscometry, solubility measurements, DSC and thermogravimetric analyses. The crystallinity of the polymers was examined by X-ray analysis. The morphology of a high performance polyester namely poly[oxyisophthaloxy-p-phenylenemethylidyne (2-oxy-l,3-cycloheptanediylidene)methylidyne-p-phenylene] has been investigated by scanning and transmission electron microscopy.Keywords
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