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Title

Synthesis and properties of a novel high-temperature diphenyl sulfone-based phthalonitrile polymer.

Authors

Peng, Xuegang; Sheng, Haitong; Guo, Hui; Naito, Kimiyoshi; Yu, Xiaoyan; Ding, Huili; Qu, Xiongwei; Zhang, Qingxin

Abstract

A novel high-temperature diphenyl sulfone-based phthalonitrile polymer is prepared from bis-[4-(3,4-dicyanophenoxy)phenyl]sulfone (BDS) monomer synthesized with high yield by a simple nucleophilic displacement of a nitro-substituent from 4-nitrophthalonitrile (NPN). The structure of BDS polymer is investigated by Fourier transform infrared spectroscopy and wide-angle X-ray diffraction. Curing behavior of BDS monomer with 1,3-bis(4-aminophenoxy)benzene (APB) is recorded by differential scanning calorimetry. The properties of BDS polymer are evaluated by thermogravimetric analysis, dynamic mechanical analysis, and tensile test. The results reveal that the BDS polymer exhibits excellent thermal and thermo-oxidative stabilities, high glass temperature (Tg = 337°C), and outstanding mechanical properties (Young’s modulus: 4.02 GPa and tensile strength: 64.16 MPa). Additionally, the BDS polymer exhibits high flame retardance and low water uptake.

Subjects

BIPHENYL compounds; SULFONES synthesis; BENZENEDICARBONITRILE; POLYMERIZATION; HIGH temperatures; CHEMICAL preparations industry

Publication

High Performance Polymers, 2014, Vol 26, Issue 7, p837

ISSN

0954-0083

Publication type

Academic Journal

DOI

10.1177/0954008314532479

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