Electromagnetic interference shielding efficiency of polyaniline mixtures and multilayer films

C. Y. Lee; H. G. Song; K. S. Jang; E. J. Oh; A. J. Epstein; J. Joo

doi:10.1016/S0379-6779(98)00234-3

Electromagnetic interference shielding efficiency of polyaniline mixtures and multilayer films

C. Y. Lee, H. G. Song, K. S. Jang, E. J. Oh, A. J. Epstein, J. Joo

Department of Physics

Research output: Contribution to journal › Conference article › peer-review

195 Citations (Scopus)

Abstract

Electromagnetic interference shielding efficiency (SE) of the mixtures of polyaniline (PAN) and conducting powders such as silver (Ag), graphite, and carbon black is measured in the frequency range from 10 MHz to 1 GHz by using ASTM D4935-89 technique. The measured SEs of the mixtures are from 20 dB to 50 dB, which agree with theoretical values obtained from a good-conductor approximation. The SEs of the system increase with increasing DC conductivity. For the mixture of emeraldine base form of PAN and Ag powder doped with hydrochloric acid, the SE is approx. 46 dB with approx. 70 μm thickness. Chemical doping in PAN mixture samples induces the increase of the SE. The model accounting for the increase of the SE in the mixture system is discussed. The effects of multilayer of PAN on the SE are presented.

Original language	English
Pages (from-to)	1346-1349
Number of pages	4
Journal	Synthetic Metals
Volume	102
Issue number	1-3
DOIs	https://doi.org/10.1016/S0379-6779(98)00234-3
Publication status	Published - 1999
Event	Proceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98) - Montpellier Duration: 1998 Jul 12 → 1998 Jul 18

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/S0379-6779(98)00234-3

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@article{b6e19c9543a34ce7811bbfb0f6ac163b,

title = "Electromagnetic interference shielding efficiency of polyaniline mixtures and multilayer films",

abstract = "Electromagnetic interference shielding efficiency (SE) of the mixtures of polyaniline (PAN) and conducting powders such as silver (Ag), graphite, and carbon black is measured in the frequency range from 10 MHz to 1 GHz by using ASTM D4935-89 technique. The measured SEs of the mixtures are from 20 dB to 50 dB, which agree with theoretical values obtained from a good-conductor approximation. The SEs of the system increase with increasing DC conductivity. For the mixture of emeraldine base form of PAN and Ag powder doped with hydrochloric acid, the SE is approx. 46 dB with approx. 70 μm thickness. Chemical doping in PAN mixture samples induces the increase of the SE. The model accounting for the increase of the SE in the mixture system is discussed. The effects of multilayer of PAN on the SE are presented.",

author = "Lee, {C. Y.} and Song, {H. G.} and Jang, {K. S.} and Oh, {E. J.} and Epstein, {A. J.} and J. Joo",

note = "Funding Information: This work was partly supported by the CRM-KOSEF and KOSEF (Grant No. 971-0210-043-2).; Proceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98) ; Conference date: 12-07-1998 Through 18-07-1998",

year = "1999",

doi = "10.1016/S0379-6779(98)00234-3",

language = "English",

volume = "102",

pages = "1346--1349",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier BV",

number = "1-3",

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TY - JOUR

T1 - Electromagnetic interference shielding efficiency of polyaniline mixtures and multilayer films

AU - Lee, C. Y.

AU - Song, H. G.

AU - Jang, K. S.

AU - Oh, E. J.

AU - Epstein, A. J.

AU - Joo, J.

N1 - Funding Information: This work was partly supported by the CRM-KOSEF and KOSEF (Grant No. 971-0210-043-2).

PY - 1999

Y1 - 1999

N2 - Electromagnetic interference shielding efficiency (SE) of the mixtures of polyaniline (PAN) and conducting powders such as silver (Ag), graphite, and carbon black is measured in the frequency range from 10 MHz to 1 GHz by using ASTM D4935-89 technique. The measured SEs of the mixtures are from 20 dB to 50 dB, which agree with theoretical values obtained from a good-conductor approximation. The SEs of the system increase with increasing DC conductivity. For the mixture of emeraldine base form of PAN and Ag powder doped with hydrochloric acid, the SE is approx. 46 dB with approx. 70 μm thickness. Chemical doping in PAN mixture samples induces the increase of the SE. The model accounting for the increase of the SE in the mixture system is discussed. The effects of multilayer of PAN on the SE are presented.

AB - Electromagnetic interference shielding efficiency (SE) of the mixtures of polyaniline (PAN) and conducting powders such as silver (Ag), graphite, and carbon black is measured in the frequency range from 10 MHz to 1 GHz by using ASTM D4935-89 technique. The measured SEs of the mixtures are from 20 dB to 50 dB, which agree with theoretical values obtained from a good-conductor approximation. The SEs of the system increase with increasing DC conductivity. For the mixture of emeraldine base form of PAN and Ag powder doped with hydrochloric acid, the SE is approx. 46 dB with approx. 70 μm thickness. Chemical doping in PAN mixture samples induces the increase of the SE. The model accounting for the increase of the SE in the mixture system is discussed. The effects of multilayer of PAN on the SE are presented.

UR - http://www.scopus.com/inward/record.url?scp=0033137764&partnerID=8YFLogxK

U2 - 10.1016/S0379-6779(98)00234-3

DO - 10.1016/S0379-6779(98)00234-3

M3 - Conference article

AN - SCOPUS:0033137764

SN - 0379-6779

VL - 102

SP - 1346

EP - 1349

JO - Synthetic Metals

JF - Synthetic Metals

IS - 1-3

T2 - Proceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98)

Y2 - 12 July 1998 through 18 July 1998

ER -

Electromagnetic interference shielding efficiency of polyaniline mixtures and multilayer films

Abstract

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