Synthesis, Spectral and Thermal Characterization of 1,1-Bis(4-hydroxyphenyl)cyclohexane (BPZ)/1,1-Bis(4-hydroxyphenyl)-4-methylcyclohexane (MBPZ) Cardo Copolyesters.

Autor: Govindraj Latha, Mydeen K, Mohamed, Hariharan, Arumugam, Balaji, Krishnasamy, Murugavel, Salem Chandrasekaran
Zdroj: Polymer Science - Series B; Aug2022, Vol. 64 Issue 4, p445-453, 9p
Abstrakt: A series of copolyesters containing cardo cyclohexane moiety in the main chain was synthesized from 1,1-bis(4-hydroxyphenyl)cyclohexane (BPZ)/1,1-bis(4-hydroxyphenyl)-4-methylcyclohexane (MBPZ) and bisphenol-A (BPA) with adipoyl chloride. The solubility of the copolyesters was tested in various solvents. The intrinsic viscosity of the synthesized copolyesters was determined by Oswald viscometer was found to be 0.33–0.48 g/dL. The molecular structures of the monomer and copolyesters were confirmed by Fourier transform infrared (FTIR), 1H NMR and 13C NMR spectral analyses. The thermal properties were studied with thermogravimetric analyses (TGA) and differential scanning calorimetry (DSC). The TGA data revealed that the copolyesters were stable up to 210°C and start degrading thereafter. The solubility and thermal stability of the synthesized polymer are enhanced due to the introduction of cardo cyclohexane ring into the polymer chain backbone. The self-extinguishing property of the synthesized copolyesters was studied by the determination of limiting oxygen index (LOI) values using van Krevelen's equation. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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