Tunable Electromagnetic Interference Shielding Ability in a One-Dimensional Bagasse Fiber/Polyaniline Heterostructure

被引：76

作者：

Zhang, Yang ^{[1
]}

Yang, Zhangjing ^{[1
]}

Yu, Ying ^{[2
]}

Wen, Bianying ^{[1
]}

Liu, Yiyang ^{[1
]}

Qiu, Munan ^{[1
]}

机构：

[1] Beijing Technol & Business Univ, Dept Mat Sci & Engn, Beijing 100048, Peoples R China

[2] Beijing Normal Univ, Sch Environm, State Key Lab Water Simulat, Beijing 100875, Peoples R China

来源：

ACS APPLIED POLYMER MATERIALS | 2019年 / 1卷 / 04期

关键词：

polyaniline; heterostructure; tunable electromagnetic interference shielding; electrical conductivity; dielectric loss; CENOSPHERE COMPOSITE FILM; POLYANILINE NANOSTRUCTURES; MICROWAVE-ABSORPTION; CARBON NANOTUBES; GRAPHENE; NANOCOMPOSITES; CONDUCTIVITY; PERFORMANCE; MORPHOLOGY; THICKNESS;

D O I：

10.1021/acsapm.8b00025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Development of highly efficient electromagnetic interference (EMI) shielding materials with tunable properties is essential for the modern electronics industry against severe electromagnetic pollution. Herein, a series of novel heterostructured bagasse fiber/polyaniline (BF/PANI) composites are successfully synthesized via a facile in situ polymerization method and both their EMI shielding effectiveness (SE) and mechanisms were analyzed experimentally and theoretically. The results show that the conductivity and EMI shielding properties of BF/PANI composites can be tailored by adjusting the component, microstructure, and electromagnetic parameter, which can be easily tuned by modulating the weight ratio of aniline monomer and BF. More significantly, the BF/PANI heterostructures exhibit remarkable enhanced EMI shielding capabilities compared with the pristine PANI. The BF/PANI heterostructure prepared with an aniline volume of 7 mL shows an electrical conductivity of 6.07 S.cm(-1) and the best EMI shielding capabilities of 35.73 dB. The excellent microwave attenuation capacity can be attributed to the cooperation of interface polarization, conductivity, skin depth effect, and the novel heterostructure. Considering their fascinating performance, these BF/PANI composites are proving to be the promising candidates as highly efficient EMI shielding materials.

引用

页码：737 / 745

页数：17

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