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Date of Publication:2022-10-10

Journal:材料研究学报

Affiliation of Author(s):化工学院

Issue:5

Page Number:513-517

ISSN No.:1005-3093

Abstract:A series of novel polyarylates were prepared from 4-(4-(4-carboxyphenoxy) phenyl) -2-(4-carboxyphenyl) -2, 3-phthalazin-l-one (1) with various bisphenols by solution polycondensation in pyridine at 120 °C. These polyarylates were produced with inherent viscosities of 0.50-0.58 dL &middotg-1. The structure of polymers obtained was confirmed by FT-IR and 1H-NMR. These polyarylates show glass-transition temperatures (T′gS) between 209 and 272 °C. The 10% weigh loss temperatures of the polymers, measured by thermogravimetric analysis, were found to be in the range of 468-481 °C in nitrogen. These polyarylates are amorphous and most of these polymers exhibit excellent solubility in a variety of solvents such as in N-methyl-2-pyrrolidinone (NMP), N, N-dimethylacetamide (DMAc), m-Cresol, pyridine and chloroform (CHCI3). The results indicate that the aromatic polyesters with the twisted and noncoplanar phthalazinone moieties have good thermal properties and excellent solubility.

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