Determination of the composition of biodiesel fuel by measuring its millimeter wave dielectric properties

Meriakri, V. V.; Chigryai, E. E.; Parkhomenko, M. P.; Denisyuk, R. N.; Gratowski, Svetlana von

doi:10.5958/j.0976-3015.2.1.009

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2013

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“…We measured the power transmission T and reflection R coefficients of the materials [24,25]. For a sample thickness of l, which actually guarantees the absence of interference in a sample (for absorption in a sample of more than 5-7 dB), the coefficients T and R are related to the propagation constants by the formulas ,…”

Section: Measurement Methodsmentioning

confidence: 99%

Dielectric Properties of Biocompatible and Biodegradable Polycaprolone and Polylactide and Their Nanocomposites in the Millimeter Wave Band

Meriakri¹,

Kalenov²,

Parkhomenko³

et al. 2013

MATERIALS

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Dielectric properties of biocompatible and biodegradable poly-ε-caprolone (PCL) and polylactide (PLA), as well as their nanocomposites, are measured in the millimeter (MM) wave band. It is found that the complex dielectric permittivity of PCL and its nanocomposites increases with temperature in the interval from 40 to 50℃, while that of PLA and its nanocomposites increases in the interval from 85 to 90℃. The samples of PLA with carbon nanotubes prepared with melamine show much lower absorption compared with the same samples prepared without melamine. The latter fact can be attributed to the formation of clusters of nanotubes in these samples.

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Section: Measurement Methodsmentioning

confidence: 99%