Design and Characterization of High-Performance Random Copolyesters Based on Dibenzylidenecyclohexanone Derivatives

Tareg M. Elsunaki; Mabruka A. Abdualla; Ghazalah M. Latiwsh

doi:10.65540/jar.v30i1.1387

المؤلفون

Tareg M. Elsunaki Department of Chemistry Faculty of Science Misurata University Misurata
Mabruka A. Abdualla Department of Chemistry Faculty of Science Misurata University Misurata
Ghazalah M. Latiwsh The Combined Clinic Abdulkafi District Sebha

DOI:

https://doi.org/10.65540/jar.v30i1.1387

الكلمات المفتاحية:

Random copolyesters، structure، property، relationship

الملخص

A new series of random copolyesters V–VII was synthesized via interfacial polycondensation of dihydroxybenzylidene cyclohexanone derivatives with isophthaloyl and/or terephthaloyl dichlorides. The structures were confirmed by IR spectroscopy and elemental analysis, showing characteristic ester carbonyl bands. All copolyesters were insoluble in common organic solvents, indicating high molecular weight and ordered structures. Electrical measurements classified V and VII as insulators and VI as a semiconductor. Thermal analysis (TGA and DSC) revealed that VI had the highest initial thermal stability (374 °C), V the highest final stability (490 °C), and VII the highest Tg (68 °C) and Tm (235 °C), with increasing crystallinity from 32% to 37%, confirming that enhanced molecular regularity improves both thermal stability and crystallinity

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