Characterization of a polyaniline/pre-oxidized fiber felt electromagnetic wave absorbing composite

Author:

Wang Yi1ORCID,Liu Yuanjun2,Zhao Xiaoming2

Affiliation:

1. School of Textile Science and Engineering, Tiangong University, Tianjin, China

2. Tianjin Key Laboratory of Advanced Fiber and Energy Storage Technology, Tianjin, China

Abstract

Firstly, a polyaniline/pre-oxidized fiber felt composite was prepared by in situ polymerization using pre-oxidized fiber felt as the substrate, aniline as the monomer, ammonium persulfate as the oxidant, and p-toluenesulfonic acid as the dopant. Secondly, the electromagnetic wave absorbing property and tensile property of the polyaniline/pre-oxidized fiber felt composite were investigated. Finally, the structure and composition were characterized by Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction, and differential scanning calorimetry. The results show that the reflection loss of the polyaniline/pre-oxidized fiber felt composite is the smallest at the 3000 MHz frequency, reaching –8.23 dB, and the average surface resistance is 2059.84 Ω, with good conductivity. The characterization analysis shows that polyaniline has been successfully loaded on the pre-oxidized fiber felt, and the protonation reaction occurs at the nitrogen atom on the imine -N-. The polyaniline structure is doped by p-toluenesulfonic acid with a certain degree of order and crystallinity, and the composite has good thermal stability.

Funder

Postdoctoral Science Foundation

Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education, Donghua University

Key Project of Natural Science Foundation of Tianjin

Publisher

SAGE Publications

Subject

Polymers and Plastics,Chemical Engineering (miscellaneous)

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