Novel high‐ T g , high‐strength poly(aryl ether) containing quadrephenyl unit

• Published in: Journal of applied polymer science Vol. 82; no. 13; pp. 3149 - 3156
• Main Authors: Banerjee, Susanta, Maier, Gerhard, Salunke, Arun, Madhra, Mukesh
• Format: Journal Article
• Language: English
• Published: 20-12-2001
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.2172

Abstract
A novel poly(aryl ether) was prepared by nucleophilic displacement of the fluorine atoms of a 2‐perfluoro‐activated bisfluoro monomer with bisphenol A. The polymer exhibited a weight average molar mass of 3.15 × 10
5
g mol
−1
according to gel permeation chromatography. The poly(aryl ether) showed very good thermal stability, with only a 5% weight loss at 493°C according to thermogravimetric analysis under synthetic air, and it had a glass‐transition temperature at 223°C according to differential scanning calorimetry and at 243°C according to dynamic mechanical thermal analysis. The polymer was soluble in a wide range of organic solvents, including CHCl
3
, tetrahydrofuran, NMP, dimethylformamide (DMF), and toluene, and was insoluble in dimethyl sulfoxide and acetone. Transparent thin films of the polymer, cast from DMF, exhibited a tensile strength of 65 MPa, a modulus of 2.62 GPa, and an elongation at break of 130%. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 3149–3156, 2001