Microwave measurement on the degree of binding of water in Hevea rubber latex

J. Hassan, . and Kaida Khalid, . and W. M. D. Wan Yusoff, . Microwave measurement on the degree of binding of water in Hevea rubber latex. pp. 94-106. ISSN 1511-1768

Measurements of the dielectric properties of Hevea rubber latex at various moisture content and selected temperatures (2 15 25 35 and 50deg.C) were done using the automated network analyser. The results were interpreted using Weiners theory for dielectric mixtures to evaluate the degree of binding of water molecules in Hevea rubber latex. Changes in the mixing condition eta indicated in the degree of binding or polarisation of the water molecules. At all frequencies there existed a region of constant eta where optimum polarisation occured before decreasing due to an increase in thermal agitation with increasing temperature. This indicated tha eta was not only dependent on moisture but very much affected by frequency and temperature. These results were further supported by data on the variation of the degree of binding at selected temperatures and frequencies.

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Abstract

Measurements of the dielectric properties of Hevea rubber latex at various moisture content and selected temperatures (2 15 25 35 and 50deg.C) were done using the automated network analyser. The results were interpreted using Weiners theory for dielectric mixtures to evaluate the degree of binding of water molecules in Hevea rubber latex. Changes in the mixing condition eta indicated in the degree of binding or polarisation of the water molecules. At all frequencies there existed a region of constant eta where optimum polarisation occured before decreasing due to an increase in thermal agitation with increasing temperature. This indicated tha eta was not only dependent on moisture but very much affected by frequency and temperature. These results were further supported by data on the variation of the degree of binding at selected temperatures and frequencies.

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Item Type:	Article
AGROVOC Term:	Hevea rubber
AGROVOC Term:	Latex plants
AGROVOC Term:	Drying
AGROVOC Term:	Microwave treatment
AGROVOC Term:	Microwave ovens
AGROVOC Term:	Dielectric properties
AGROVOC Term:	Network analysis
AGROVOC Term:	Mixing
AGROVOC Term:	Water binding capacity
AGROVOC Term:	Distribution of frequency
Geographical Term:	Malaysia
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	28 Apr 2025 03:23
URI:	http://webagris.upm.edu.my/id/eprint/23153

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