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Polyvinylpyrrolidone/Polyaniline Composite Based 36° YX LiTaO3 Surface Acoustic Wave H2 Gas
Sensor
(Pengesan Gas Hidrogen:
Komposit Polivinilpirolidon/polianilin di atas 36° YX LiTaO3 Gelombang Akustik Permukaan)
Amir Sidek & Rashidah Arsat*
Faculty of Electrical Engineering, Universiti
Teknologi Malaysia,
81310 Skudai, Johor Bahru, Malaysia
Xiuli He
State Key Laboratory of Transducer
Technology, Chinese Academy of Sciences
52 Sanlihe Rd., Beijing, 100864, China
Kourosh Kalantar-zadeh & Wojtek
Wlodarski
School of Electrical & Computer
Engineering, RMIT University
124 La Trobe Street, Melbourne, Victoria
3000 Australia
Diserahkan: 7 Januari 2012 / Diterima: 21
Mei 2012
ABSTRACT
Poly-vinyl-pyrrolidone (PVP)/polyaniline
based surface acoustic wave (SAW) sensors were fabricated
and characterized and their performances towards hydrogen gas were
investigated. The PVP/polyaniline fibers composite were
prepared by electrospinning of the composite aqueous solution deposited
directly onto the active area of SAW transducers. Via scanning
electron microscopy (SEM), the morphology of the deposited
nanostructure material was observed. From the dynamic response, frequency
shifts of 6.243 kHz (1% H2) and 8.051 kHz (1% H2)
were recorded for the sensors deposited with PVP/ES and PVP/EB,
respectively.
Keywords: Gas sensor;
polyvinylpyrrolidone/polyaniline composite; surface acoustic wave
ABSTRAK
Lapisan pengesan polivinilpirolidon (PVP)/polianilin yang dimendap secara terus di atas
kawasan aktif pengesang gelombang akustik permukaan (SAW) telah berjaya dihasilkan. Permukaan bahan komposit yang dihasilkan melalui
kaedah elektroputaran ini dicirikan menggunakan mikroskop elektron imbasan (SEM). Prestasi pengesan bahan komposit/SAW terhadap
gas hidrogen telah dianalisis. Anjakan frequensi sebanyak 6.243 kHz (1%
H2)
dan 8.051 kHz (1% H2) bagi pengesan yang dimendapkan
dengan PVP/ES dan PVP/EB telah
direkodkan.
Kata kunci: Komposit polivinilpirolidon /polianilin; pengesan
gas; gelombang akustik permukaan (SAW)
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*Pengarang untuk surat-menyurat; email: rashidah@fke.utm.my
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