EMI shielding performance of SBR nanocomposite reinforced by multiwalled carbon nanotubes

Jose James; George Vazhathara Thomas; Sisanth Krishnageham Sidharathan; Mohammad Arif Poothanari; Sabu Thomas

doi:10.3144/expresspolymlett.2025.53

EMI shielding performance of SBR nanocomposite reinforced by multiwalled carbon nanotubes

Jose James, George Vazhathara Thomas, Sisanth Krishnageham Sidharathan, Mohammad Arif Poothanari, Sabu Thomas

Research output: Contribution to journal › Article › peer-review

Abstract

A nanocomposite of styrene butadiene rubber (SBR) and multi-walled carbon nanotubes (MWCNT) was fabricated using an internal melt mixer. Systematically investigated the role of MWCNT loading on the mechanical, dielectric, electrical and Electromagnetic interference (EMI) shielding characteristics of developed nanocomposites. The fine dispersion of MW-CNTs in the SBR matrix was clearly observed from high-resolution transmission electron microscope images. The nanocom-posites exhibited outstanding electrical, dielectric and EMI shielding behaviours (~45 dB at 20 phr of MWCNT). A high conductivity of 0.92 S/cm was attained in the nanocomposites and is attributable to the establishment of percolation networks of MWCNT in the SBR matrix. These composites displayed reasonably good mechanical properties because of the rein-forcing effect of MWCNT. The economically viable and easy fabrication protocol of this nanocomposite can act as a platform for the synthesis of low-cost and highly effective composite for EMI shielding applications.

Original language	English
Pages (from-to)	697-705
Number of pages	9
Journal	Express Polymer Letters
Volume	19
Issue number	7
DOIs	https://doi.org/10.3144/expresspolymlett.2025.53
Publication status	Published - Jul 2025
Externally published	Yes

Keywords

Dielectric properties
EMI shielding
IPN
MWCNT
Mechanical properties
TEM
Toughened plastic
composite
conductivity

ASJC Scopus subject areas

General Chemical Engineering
Physical and Theoretical Chemistry
Polymers and Plastics
Organic Chemistry
Materials Chemistry

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10.3144/expresspolymlett.2025.53

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title = "EMI shielding performance of SBR nanocomposite reinforced by multiwalled carbon nanotubes",

abstract = "A nanocomposite of styrene butadiene rubber (SBR) and multi-walled carbon nanotubes (MWCNT) was fabricated using an internal melt mixer. Systematically investigated the role of MWCNT loading on the mechanical, dielectric, electrical and Electromagnetic interference (EMI) shielding characteristics of developed nanocomposites. The fine dispersion of MW-CNTs in the SBR matrix was clearly observed from high-resolution transmission electron microscope images. The nanocom-posites exhibited outstanding electrical, dielectric and EMI shielding behaviours (\textasciitilde{}45 dB at 20 phr of MWCNT). A high conductivity of 0.92 S/cm was attained in the nanocomposites and is attributable to the establishment of percolation networks of MWCNT in the SBR matrix. These composites displayed reasonably good mechanical properties because of the rein-forcing effect of MWCNT. The economically viable and easy fabrication protocol of this nanocomposite can act as a platform for the synthesis of low-cost and highly effective composite for EMI shielding applications.",

keywords = "Dielectric properties, EMI shielding, IPN, MWCNT, Mechanical properties, TEM, Toughened plastic, composite, conductivity",

author = "Jose James and Thomas, \{George Vazhathara\} and Sidharathan, \{Sisanth Krishnageham\} and Poothanari, \{Mohammad Arif\} and Sabu Thomas",

note = "Publisher Copyright: {\textcopyright} BME-PT.",

year = "2025",

month = jul,

doi = "10.3144/expresspolymlett.2025.53",

language = "English",

volume = "19",

pages = "697--705",

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AU - James, Jose

AU - Thomas, George Vazhathara

AU - Sidharathan, Sisanth Krishnageham

AU - Poothanari, Mohammad Arif

AU - Thomas, Sabu

N1 - Publisher Copyright: © BME-PT.

PY - 2025/7

Y1 - 2025/7

N2 - A nanocomposite of styrene butadiene rubber (SBR) and multi-walled carbon nanotubes (MWCNT) was fabricated using an internal melt mixer. Systematically investigated the role of MWCNT loading on the mechanical, dielectric, electrical and Electromagnetic interference (EMI) shielding characteristics of developed nanocomposites. The fine dispersion of MW-CNTs in the SBR matrix was clearly observed from high-resolution transmission electron microscope images. The nanocom-posites exhibited outstanding electrical, dielectric and EMI shielding behaviours (~45 dB at 20 phr of MWCNT). A high conductivity of 0.92 S/cm was attained in the nanocomposites and is attributable to the establishment of percolation networks of MWCNT in the SBR matrix. These composites displayed reasonably good mechanical properties because of the rein-forcing effect of MWCNT. The economically viable and easy fabrication protocol of this nanocomposite can act as a platform for the synthesis of low-cost and highly effective composite for EMI shielding applications.

AB - A nanocomposite of styrene butadiene rubber (SBR) and multi-walled carbon nanotubes (MWCNT) was fabricated using an internal melt mixer. Systematically investigated the role of MWCNT loading on the mechanical, dielectric, electrical and Electromagnetic interference (EMI) shielding characteristics of developed nanocomposites. The fine dispersion of MW-CNTs in the SBR matrix was clearly observed from high-resolution transmission electron microscope images. The nanocom-posites exhibited outstanding electrical, dielectric and EMI shielding behaviours (~45 dB at 20 phr of MWCNT). A high conductivity of 0.92 S/cm was attained in the nanocomposites and is attributable to the establishment of percolation networks of MWCNT in the SBR matrix. These composites displayed reasonably good mechanical properties because of the rein-forcing effect of MWCNT. The economically viable and easy fabrication protocol of this nanocomposite can act as a platform for the synthesis of low-cost and highly effective composite for EMI shielding applications.

KW - Dielectric properties

KW - EMI shielding

KW - IPN

KW - MWCNT

KW - Mechanical properties

KW - TEM

KW - Toughened plastic

KW - composite

KW - conductivity

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DO - 10.3144/expresspolymlett.2025.53

M3 - Article

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SP - 697

EP - 705

JO - Express Polymer Letters

JF - Express Polymer Letters

IS - 7

ER -

EMI shielding performance of SBR nanocomposite reinforced by multiwalled carbon nanotubes

Abstract

Keywords

ASJC Scopus subject areas

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