Preparation and properties of polyesters derived from 4,4′-sulfonyl dibenzoyl chloride by solution polycondensation

✍ Scribed by Der-Jang Liaw; Pi-Sheng Chen

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 528 KB
• Volume: 34
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/(sici)1099-0518(19960415)34:5<885::aid-pola17>3.0.co;2-e

✦ Synopsis

Sulfone-containing polyesters of 18 kinds having inherent viscosities of 1.19-0.16 dL g-' were prepared derived from 4,4'-sulfonyl dibenzoyl chloride by solution polycondensation from various aromatic and aliphatic diols in nitrobenzene at 82°C. The polyesters were examined with IR spectra, inherent viscosity, x-ray diffraction, solubility, DSC, and TGA. Polyester (PE-7) with the greatest inherent viscosity may reflect that bisphenol A having a electron-releasing group increases nucleophilic properties of the phenolate anion. Diols such as bisphenol AF (PE-13) and brominated diols (PE-4, PE-10, and PE-16) gave less favorable results. The diffractograms showed that all polyesters were essentially amorphous except that obtained from bisphenol S and its derivatives. Almost all polyesters except PE-1 and PE-2 were soluble in DMF, THF, tetrachloroethane and phenollsyrn-tetrachloroethane (60/40 by mass) but insoluble in typical organic solvents such as acetone, toluene, and chloroform. These polymers obtained from aromatic bisphenols lost no mass below 309"C, but 10% loss of mass was recorded above 380°C in nitrogen.