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Microwave Dielectric Properties of Hevea Rubber Latex in the Temperature Range of -30°C to 50°C

The dielectric properties of hevea rubber latex were measured at selected microwave frequencies over the temperature range of -30°C to 50°C. The measurements were made on latex concentrate, fresh latex and diluted fresh latex by using an open-ended coaxial-line probe and an automated network analys...

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Main Authors: Hassan, Jumiah, Khalid, Kaida, Wan Yusof, Wan Mohamad Daud
Format: Article
Language:English
English
Published: Universiti Putra Malaysia Press 1997
Online Access:http://psasir.upm.edu.my/id/eprint/3320/1/Microwave_Dielectric_Properties_of_Hevea_Rubber_Latex_in_the.pdf
http://psasir.upm.edu.my/id/eprint/3320/
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spelling my.upm.eprints.33202013-05-27T07:07:14Z http://psasir.upm.edu.my/id/eprint/3320/ Microwave Dielectric Properties of Hevea Rubber Latex in the Temperature Range of -30°C to 50°C Hassan, Jumiah Khalid, Kaida Wan Yusof, Wan Mohamad Daud The dielectric properties of hevea rubber latex were measured at selected microwave frequencies over the temperature range of -30°C to 50°C. The measurements were made on latex concentrate, fresh latex and diluted fresh latex by using an open-ended coaxial-line probe and an automated network analyser. There is a steep increase in the dielectric constant of about one order and dielectric loss factor of about two orders as the phase of latex changes from solid to liquid. The effect of temperature on the ionic conductivity at 0.2 GHz and dipole orientation at 2.6 GHz and above can be clearly seen in these studies. It was found that, the frequency around 10 GHz is a suitable operating frequency for microwave latexometer as dielectric properties are fairly independent of the temperature. Universiti Putra Malaysia Press 1997 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/3320/1/Microwave_Dielectric_Properties_of_Hevea_Rubber_Latex_in_the.pdf Hassan, Jumiah and Khalid, Kaida and Wan Yusof, Wan Mohamad Daud (1997) Microwave Dielectric Properties of Hevea Rubber Latex in the Temperature Range of -30°C to 50°C. Pertanika Journal of Science & Technology, 5 (2). pp. 179-190. ISSN 0128-7680 English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description The dielectric properties of hevea rubber latex were measured at selected microwave frequencies over the temperature range of -30°C to 50°C. The measurements were made on latex concentrate, fresh latex and diluted fresh latex by using an open-ended coaxial-line probe and an automated network analyser. There is a steep increase in the dielectric constant of about one order and dielectric loss factor of about two orders as the phase of latex changes from solid to liquid. The effect of temperature on the ionic conductivity at 0.2 GHz and dipole orientation at 2.6 GHz and above can be clearly seen in these studies. It was found that, the frequency around 10 GHz is a suitable operating frequency for microwave latexometer as dielectric properties are fairly independent of the temperature.
format Article
author Hassan, Jumiah
Khalid, Kaida
Wan Yusof, Wan Mohamad Daud
spellingShingle Hassan, Jumiah
Khalid, Kaida
Wan Yusof, Wan Mohamad Daud
Microwave Dielectric Properties of Hevea Rubber Latex in the Temperature Range of -30°C to 50°C
author_facet Hassan, Jumiah
Khalid, Kaida
Wan Yusof, Wan Mohamad Daud
author_sort Hassan, Jumiah
title Microwave Dielectric Properties of Hevea Rubber Latex in the Temperature Range of -30°C to 50°C
title_short Microwave Dielectric Properties of Hevea Rubber Latex in the Temperature Range of -30°C to 50°C
title_full Microwave Dielectric Properties of Hevea Rubber Latex in the Temperature Range of -30°C to 50°C
title_fullStr Microwave Dielectric Properties of Hevea Rubber Latex in the Temperature Range of -30°C to 50°C
title_full_unstemmed Microwave Dielectric Properties of Hevea Rubber Latex in the Temperature Range of -30°C to 50°C
title_sort microwave dielectric properties of hevea rubber latex in the temperature range of -30°c to 50°c
publisher Universiti Putra Malaysia Press
publishDate 1997
url http://psasir.upm.edu.my/id/eprint/3320/1/Microwave_Dielectric_Properties_of_Hevea_Rubber_Latex_in_the.pdf
http://psasir.upm.edu.my/id/eprint/3320/
_version_ 1643822577828757504
score 13.211869

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