Radio-frequency characterization of multi-walled carbon nanotube/poly-lactic acid composites

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dc.contributor.authorSukgorn, Nuttaya
dc.contributor.authorSiraleartmukul, Krisana
dc.contributor.authorYordsri, Visittapong
dc.contributor.authorChudpooti, Nonchanutt
dc.contributor.authorChaimool, Sarawuth
dc.contributor.authorAkkaraekthalin, Prayoot
dc.contributor.authorChalermwisutkul, Suramate
dc.contributor.authorThanachayanont, Chanchana
dc.contributor.authorWongwiriyapan, Winadda
dc.contributor.authorChalapat, Khattiya
dc.date.accessioned2026-08-06T10:15:25Z
dc.date.available2026-08-06T10:15:25Z
dc.date.issued2017-01-01
dc.description.abstractNowadays radio and microwave frequencies are widely used in wireless broadcastings and communications. But these waves can cause electromagnetic interferences in some electronic devices, including the equipment used in hospitals. The problems of the electromagnetic interference can be solved by using the materials that can reflect and/or absorb radio-frequency (RF) and microwaves. The shielding effectiveness (SE) of a material depends on its conductivity and the electrical permittivity. Recently, carbon nanotubes (CNTs) have been proposed as promising materials for shielding applications owing to its flexibility, durability, lightweight and exceptional electrical conductivity compared to conventional metal. In this work, the RF properties of multi-walled carbon nanotube (MWCNT) composites were investigated. Poly-lactic acid (PLA), a natural bio-degradable material, is used as the polymer matrix. The composites with different MWCNT concentrations (0 to 0.4 wt%) were prepared and molded into thin rectangular samples (5.6 cm x 6.3cm). The surfaces of the composites were morphologically characterized by a scanning electron microscope. The electrical permittivity of the samples was measured by using a vector network analyzer and a microstrip resonator within a range of 1-11 GHz. The effects of MWCNT concentration on electrical permittivity will be discussed.
dc.identifier.citationMaterials Today Proceedings, 4(5), 6548-6552, 2017
dc.identifier.doi10.1016/j.matpr.2017.06.166
dc.identifier.issn22147853
dc.identifier.other2-s2.0-85028385311
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/7317
dc.sourceMaterials Today Proceedings
dc.subjectCarbon Nanotube
dc.subjectElectrical Permittivity
dc.subjectPoly-Lactic Acid
dc.subjectRadio-Frequency Characterization
dc.titleRadio-frequency characterization of multi-walled carbon nanotube/poly-lactic acid composites
dc.typeConference Paper

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