X-band microwave absorption and dielectric properties of polyaniline-yttrium oxide composites

Author:

Faisal Muhammad1,Khasim Syed1

Affiliation:

1. 1Department of Physics, PES Institute of Technology-Bangalore South Campus, Bangalore 560 100, Karnataka, India

Abstract

AbstractThis article highlights the microwave absorption and dielectric attributes of synthesized polyaniline (PAni)-yttrium trioxide (Y2O3) composites. Temperature-dependent conductivity measurements were carried out in the temperature range of 300–473 K, which indicates the presence of hopping conduction. The PAni-Y2O3 composites showed semiconductor behavior with the exponential variation of inverse temperature dependence of electrical conductivity. Microwave measurements were carried out in the X-band (8–12 GHz) frequency; the composites exhibit absorption-dominated shielding effectiveness (SEA) in the range -33 to -35 dB (>99% microwave attenuation) and minimum electromagnetic reflection. The ε′ and ε″ values of the composites are in the range of 81.5–97.5 and 80–118.5, respectively. The PAni-Y2O3 composites showed significant improvement in microwave SE and complex permittivity of the composites, indicating the influence of Y2O3 in PAni.

Publisher

Walter de Gruyter GmbH

Subject

Polymers and Plastics,Physical and Theoretical Chemistry,General Chemical Engineering

Reference124 articles.

1. Influence of the morphology of polyaniline on the microwave absorption properties of epoxy polyaniline composites;Oyharcabal;Compos Sci Technol,2013

2. lattice in highly conducting polyaniline theoretical and optical studies;Stafstrom;Phys Rev Lett,1987

3. DA Microwave absorption by polyaniline carbon nanotube composites Met;Makeiff,2006

4. The mechanism of the oxidative polymerization of aniline and the formation of supramolecular polyaniline structures;Sapurina;Polym Int,2008

5. The manufacture and investigation of multi - walled carbon nanotube polypyrrole EVA nano - polymeric composites for electromagnetic interference shielding Thin;Huang;Solid Films,2011

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3