Construction of polyaniline aligned on magnetic functionalized biomass carbon giving excellent microwave absorption properties. (12th April 2019)

• Record Type: Journal Article
• Authors: Yang, Qixin; Shi, Yiyuan; Fang, Yu; Dong, Yubing; Ni, Qingqing; Zhu, Yaofeng; Fu, Yaqin
• Is Part Of: Composites science and technology. Volume 174(2019)
• Page Start: 176
• Page End: 183
• Publication Date: 2019-04-12
• Subjects: A: Hybrid composites -- B: Magnetic properties -- B: Interface; Composite materials -- Periodicals; Composite materials; Fibrous composites; Periodicals; 620.118
• DOI: 10.1016/j.compscitech.2019.02.031
• Languages: English
• ISSNs: 0266-3538

Abstract

Abstract: A novel ternary nanocomposite of Fe3 O4 functionalized porous biomass carbon decorated by aligned polyaniline (A-PANI/Fe3 O4 /PBC) was successfully fabricated by hydrothermal and in situ oxidative polymerization. The morphology and structure of the composite was characterized by X-ray diffraction, fourier transform infrared spectra, scanning electron microcopy, transmission electron microscopy, X-ray photoelectron spectra and vibrating sample magnetometer. The microwave absorbing properties of A-PANI/Fe3 O4 /PBC composite were investigated in the frequency of 2–18 GHz. The results indicated that the A-PANI/Fe3 O4 /PBC composite possess excellent microwave absorbing performance, and the minimum reflection loss can be up to −44.8 dB at 10.67 GHz, effective absorbing bandwidth ( RL < −10 dB) reaches 4.69 GHz with a thickness of 2.7 mm. The excellent microwave absorbing performance of composite was mainly related to the multi-loss mechanisms, good impedance matching, synergistic and geometrical effect of porous biomass carbon, magnetic particles and aligned PANI.