Volume 140, Issue 5 e53407
RESEARCH ARTICLE

Synthesis of phenolphthalein/bisphenol A-based poly(arylene ether nitrile) copolymers: Preparation and properties of films

Jingcheng Li

Jingcheng Li

School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, Sichuan, China

Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials, Chengdu, China

Contribution: Conceptualization (lead), Formal analysis (lead), ​Investigation (lead), Software (lead), Validation (lead), Writing - original draft (lead), Writing - review & editing (lead)

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Shuai Zhang

Corresponding Author

Shuai Zhang

School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, Sichuan, China

Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials, Chengdu, China

Correspondence

Shuai Zhang and Xiaobo Liu, School of Materials and Energy, University of Electronic Science and Technology of China, 2006 Xiyuan Avenue, West High-Tech Zone, Chengdu, Sichuan 611731, China.

Email: [email protected] and [email protected]

Contribution: Conceptualization (supporting), Methodology (equal), Resources (equal), Supervision (equal), Writing - review & editing (supporting)

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Xiaobo Liu

Corresponding Author

Xiaobo Liu

School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, Sichuan, China

Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials, Chengdu, China

Correspondence

Shuai Zhang and Xiaobo Liu, School of Materials and Energy, University of Electronic Science and Technology of China, 2006 Xiyuan Avenue, West High-Tech Zone, Chengdu, Sichuan 611731, China.

Email: [email protected] and [email protected]

Contribution: Conceptualization (supporting), Funding acquisition (lead), Methodology (equal), Resources (lead), Supervision (equal), Writing - review & editing (supporting)

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First published: 21 November 2022

Funding information: National Natural Science Foundation of China, Grant/Award Numbers: 52073039, 51773028, 52173068

Abstract

Poly(arylene ether nitrile) (PEN) is a class of high-performance engineering plastics of poly(arylene ether) with cyano groups as side groups, which can get improved thermal, mechanical, and electrical properties through simple molecular structure design. In this work, a series of PEN (BPA/PP based PEN) copolymers were synthesized with varying amounts of phenolphthalein and bisphenol A. The influence of the copolymer molecular structure variations on the thermal, mechanical, and dielectric properties of PEN copolymer films was investigated. The results demonstrated that the BPA/PP based PEN copolymer films have great mechanical properties and low dielectric constant, as well as enhanced thermal properties. The highest 5% weight loss temperature of 494.9°C was obtained by PEN-B7P3, while the highest glass transition temperature of 238.6°C was obtained by PEN-B3P7. Porous BPA/PP based PEN films prepared by non-solvent induced phase separation (NIPS) exhibited satisfactory mechanical properties and the highest tensile strength of 9.4 MPa was achieved. Moreover, the introduction of the phenolphthalein structure into the PEN molecular chain can improve the heat resistance of the PEN copolymers without deteriorating the dielectric properties, which gives the copolymers great potential as candidates for applications in flexible electronics and wireless communication.

CONFLICT OF INTEREST

The authors declare no competing financial interest.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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