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A series of novel high‐temperature‐resistant multiwall carbon nanotubes dispersants: Polyphenylene sulfones with pyrene groups in main chain
Author(s) -
Xu Da,
Seery Thomas A. P.,
Gao Yanwei,
Ding Lianjun,
Zhou Chenyi,
Wang Zhaoyang,
Jiang Zilong,
Zhang Haibo
Publication year - 2020
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.48379
Subject(s) - materials science , monomer , carbon nanotube , polymer , copolymer , thermal stability , polymer chemistry , pyrene , fourier transform infrared spectroscopy , chemical engineering , composite material , organic chemistry , chemistry , engineering
A series of polyphenylene sulfones were synthesized with pyrene groups in the main chain. Using a traditional Suzuki coupling reaction followed by a reduction, the pyrene‐containing monomer was synthesized as the diphenol. A series of copolymers were synthesized using this new monomer, a biphenyldiphenol, and 4,4′‐difluorodiphenylsulfone. These polymers were characterized using 1 HNMR and FTIR spectroscopy. The introduction of rigid pyrene groups provided these new polymers with good thermal stability and mechanical strength. In this work, these polymers are shown to functionalize and disperse multiwall carbon nanotubes (MWCNTs). The associations of our copolymers to the MWCNTs appear to operate through pi stacking interactions between the pyrene group and the sidewalls of the MWCNTs, referred to in this article as f‐MWCNTs. The dispersibility of f‐MWCNTs in solvents and polymer matrixes was systematically studied by preparation of f‐MWCNTs/polyphenylene sulfone (PPSU) composites with various f‐MWCNTs content. Improvements in the dispersability of f‐MWCNTs in PPSU resin result in enhancement of the mechanical and thermal properties of f‐MWCNTs/PPSU composites. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48379.