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Preparation and characterization of polyaniline graphene nanoplatelets conductive nanocomposite for wearable textile antenna

Wearable textiles for antennas have growth significantly due to their widespread utilization in comprehensive monitoring, communication and storage systems. Traditional antennas are often bulky and susceptible to corrosion, but the integrating antenna into textiles offers a promising solution for we...

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主要作者:	Khalid, Nor Aisah
格式:	Thesis
语言:	English English
出版:	2024
在线阅读:	http://eprints.utem.edu.my/id/eprint/28621/1/Preparation%20and%20characterization%20of%20polyaniline%20graphene%20nanoplatelets%20conductive%20nanocomposite%20for%20wearable%20textile%20antenna.pdf http://eprints.utem.edu.my/id/eprint/28621/2/Preparation%20and%20characterization%20of%20polyaniline%20graphene%20nanoplatelets%20conductive%20nanocomposite%20for%20wearable%20textile%20antenna.pdf http://eprints.utem.edu.my/id/eprint/28621/ https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=124366
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id	my.utem.eprints.28621
record_format	eprints
spelling	my.utem.eprints.286212025-03-17T12:55:54Z http://eprints.utem.edu.my/id/eprint/28621/ Preparation and characterization of polyaniline graphene nanoplatelets conductive nanocomposite for wearable textile antenna Khalid, Nor Aisah Wearable textiles for antennas have growth significantly due to their widespread utilization in comprehensive monitoring, communication and storage systems. Traditional antennas are often bulky and susceptible to corrosion, but the integrating antenna into textiles offers a promising solution for wearable applications. This study explores the use of polyaniline (PANI) combined with graphene nanoplatelets (GNPs) at various loading (0.25 wt%, 0.50 wt%, 0.75 wt% and 1.00 wt%) to create a conductive polymer via oxidative polymerization, aimed at enhancing wireless communication function in electronics devices. Ammonium persulfate (APS) was used as an oxidizing agent in hydrochloric acid (HCl) and aniline monomers were polymerized into elongated PANI chains. Non covalent surface modification technique including π-π stacking, van der Waals forces and electrostatic interactions preserved the GNPs lattice and enhanced the electrical conductivity by charge carrier mobility, resulting in superior antenna characteristics. Screen printing techniques were employed to integrate these materials into wearable structures without compromising antenna performance. A rectangular microstrip patch antenna design, simulated with CST Microwave Studio was printed using a PANI/GNPs mixture mixed with ethylene glycol (EG) and polyvinyl pyrrolidones (PVP) for optimal ink adhesion. Morphological analysis (SEM, FESEM and TEM) showed well-distributed and connected nanoparticles facilitating continuous electron pathways. FTIR, RAMAN and XRD characterizations confirmed the presence of carboxylic acid (COOH) and amine (NH2) groups, improved structural order and decreased crystallite size indicating enhanced charge carrier connectivity. The 0.75 wt% PANI/GNPs (treated)-DBSA sample exhibited the highest conductivity value at 22.34 S/cm. Simulation and experimental results demonstrated return loss (S11) values of -23.38 dB and -20.78 dB respectively with antenna gain of 2.86 dB at 2.45 GHz and 7.01 at 2.60 GHz. The radiation pattern illustrated a dipole shape for both the E- field and H-field. The successful synthesis of PANI/GNPs with DBSA significantly enhanced electrical conductivity, leading to an optimal conductive ink formulation for microstrip patch antenna fabrication. Experimental validation confirmed improved antenna performance, which is particularly promising for flexible and lightweight WBAN application. In conclusion, PANI/GNPs-DBSA nanocomposites offer a compelling alternative to rigid, expensive materials like copper or FR4 in antenna-based telecommunication applications, paving the way for advanced wearable technology. 2024 Thesis NonPeerReviewed text en http://eprints.utem.edu.my/id/eprint/28621/1/Preparation%20and%20characterization%20of%20polyaniline%20graphene%20nanoplatelets%20conductive%20nanocomposite%20for%20wearable%20textile%20antenna.pdf text en http://eprints.utem.edu.my/id/eprint/28621/2/Preparation%20and%20characterization%20of%20polyaniline%20graphene%20nanoplatelets%20conductive%20nanocomposite%20for%20wearable%20textile%20antenna.pdf Khalid, Nor Aisah (2024) Preparation and characterization of polyaniline graphene nanoplatelets conductive nanocomposite for wearable textile antenna. Doctoral thesis, Universiti Teknikal Malaysia Melaka. https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=124366
institution	Universiti Teknikal Malaysia Melaka
building	UTEM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknikal Malaysia Melaka
content_source	UTEM Institutional Repository
url_provider	http://eprints.utem.edu.my/
language	English English
description	Wearable textiles for antennas have growth significantly due to their widespread utilization in comprehensive monitoring, communication and storage systems. Traditional antennas are often bulky and susceptible to corrosion, but the integrating antenna into textiles offers a promising solution for wearable applications. This study explores the use of polyaniline (PANI) combined with graphene nanoplatelets (GNPs) at various loading (0.25 wt%, 0.50 wt%, 0.75 wt% and 1.00 wt%) to create a conductive polymer via oxidative polymerization, aimed at enhancing wireless communication function in electronics devices. Ammonium persulfate (APS) was used as an oxidizing agent in hydrochloric acid (HCl) and aniline monomers were polymerized into elongated PANI chains. Non covalent surface modification technique including π-π stacking, van der Waals forces and electrostatic interactions preserved the GNPs lattice and enhanced the electrical conductivity by charge carrier mobility, resulting in superior antenna characteristics. Screen printing techniques were employed to integrate these materials into wearable structures without compromising antenna performance. A rectangular microstrip patch antenna design, simulated with CST Microwave Studio was printed using a PANI/GNPs mixture mixed with ethylene glycol (EG) and polyvinyl pyrrolidones (PVP) for optimal ink adhesion. Morphological analysis (SEM, FESEM and TEM) showed well-distributed and connected nanoparticles facilitating continuous electron pathways. FTIR, RAMAN and XRD characterizations confirmed the presence of carboxylic acid (COOH) and amine (NH2) groups, improved structural order and decreased crystallite size indicating enhanced charge carrier connectivity. The 0.75 wt% PANI/GNPs (treated)-DBSA sample exhibited the highest conductivity value at 22.34 S/cm. Simulation and experimental results demonstrated return loss (S11) values of -23.38 dB and -20.78 dB respectively with antenna gain of 2.86 dB at 2.45 GHz and 7.01 at 2.60 GHz. The radiation pattern illustrated a dipole shape for both the E- field and H-field. The successful synthesis of PANI/GNPs with DBSA significantly enhanced electrical conductivity, leading to an optimal conductive ink formulation for microstrip patch antenna fabrication. Experimental validation confirmed improved antenna performance, which is particularly promising for flexible and lightweight WBAN application. In conclusion, PANI/GNPs-DBSA nanocomposites offer a compelling alternative to rigid, expensive materials like copper or FR4 in antenna-based telecommunication applications, paving the way for advanced wearable technology.
format	Thesis
author	Khalid, Nor Aisah
spellingShingle	Khalid, Nor Aisah Preparation and characterization of polyaniline graphene nanoplatelets conductive nanocomposite for wearable textile antenna
author_facet	Khalid, Nor Aisah
author_sort	Khalid, Nor Aisah
title	Preparation and characterization of polyaniline graphene nanoplatelets conductive nanocomposite for wearable textile antenna
title_short	Preparation and characterization of polyaniline graphene nanoplatelets conductive nanocomposite for wearable textile antenna
title_full	Preparation and characterization of polyaniline graphene nanoplatelets conductive nanocomposite for wearable textile antenna
title_fullStr	Preparation and characterization of polyaniline graphene nanoplatelets conductive nanocomposite for wearable textile antenna
title_full_unstemmed	Preparation and characterization of polyaniline graphene nanoplatelets conductive nanocomposite for wearable textile antenna
title_sort	preparation and characterization of polyaniline graphene nanoplatelets conductive nanocomposite for wearable textile antenna
publishDate	2024
url	http://eprints.utem.edu.my/id/eprint/28621/1/Preparation%20and%20characterization%20of%20polyaniline%20graphene%20nanoplatelets%20conductive%20nanocomposite%20for%20wearable%20textile%20antenna.pdf http://eprints.utem.edu.my/id/eprint/28621/2/Preparation%20and%20characterization%20of%20polyaniline%20graphene%20nanoplatelets%20conductive%20nanocomposite%20for%20wearable%20textile%20antenna.pdf http://eprints.utem.edu.my/id/eprint/28621/ https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=124366
_version_	1827448631524851712
score	13.251813

Preparation and characterization of polyaniline graphene nanoplatelets conductive nanocomposite for wearable textile antenna

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