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Dielectric Properties of Azo Polymers: Effect of the Push-Pull Azo Chromophores
Joint Authors
Wei, Renbo
Hua, Xiufu
Zhang, Xuan
Wen, Ziqi
Zhang, Hongxing
Han, Weihua
Ma, Jinyi
Source
International Journal of Polymer Science
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-02-12
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The relationship between the structure and the dielectric properties of the azo polymers was studied.
Four azo polymers were synthesized through the azo-coupling reaction between the same precursor (PAZ) and diazonium salts of 4-aminobenzoic acid ethyl ester, 4-aminobenzonitrile, 4-nitroaniline, and 2-amino-5-nitrothiazole, respectively.
The precursor and azo polymers were characterized by 1H NMR, FT-IR, UV-vis, GPC, and DSC.
The dielectric constant and dielectric loss of the samples were measured in the frequency range of 100 Hz–200 kHz.
Due to the existence of the azo chromophores, the dielectric constant of the azo polymers increases compared with that of the precursor.
In addition, the dielectric constant of the azo polymers increases with the increase of the polarity of the azo chromophores.
A random copolymer (PAZ-NT-PAZ) composed of the azo polymer PAZ-NT and the precursor PAZ was also prepared to investigate the content of the azo chromophores on the dielectric properties of the azo polymers.
It showed that the dielectric constant increases with the increase of the azo chromophores.
The results show that the dielectric constant of this kind of azo polymers can be controlled by changing the structures and contents of azo chromophores during the preparation process.
American Psychological Association (APA)
Zhang, Xuan& Wen, Ziqi& Zhang, Hongxing& Han, Weihua& Ma, Jinyi& Wei, Renbo…[et al.]. 2018. Dielectric Properties of Azo Polymers: Effect of the Push-Pull Azo Chromophores. International Journal of Polymer Science،Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1175108
Modern Language Association (MLA)
Zhang, Xuan…[et al.]. Dielectric Properties of Azo Polymers: Effect of the Push-Pull Azo Chromophores. International Journal of Polymer Science No. 2018 (2018), pp.1-10.
https://search.emarefa.net/detail/BIM-1175108
American Medical Association (AMA)
Zhang, Xuan& Wen, Ziqi& Zhang, Hongxing& Han, Weihua& Ma, Jinyi& Wei, Renbo…[et al.]. Dielectric Properties of Azo Polymers: Effect of the Push-Pull Azo Chromophores. International Journal of Polymer Science. 2018. Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1175108
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1175108