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2012-04-04
Alginate Beads and Epoxy Resin Composites as Candidates for Microwave Absorbers
By
Progress In Electromagnetics Research C, Vol. 28, 127-142, 2012
Abstract
This paper presents a new composite material, which is developed by mixing calcium alginate spheres with commercially available epoxies Stycas 2850 FT (s2850) and Stycast W19 (W19). The resulting composite material is examined in terms of transmission and reflection coefficients in microwave frequencies (26 to 40 GHz, 70 to 110 GHz and 300 to 320 GHz). The study reveals that the new material exhibits reflection coefficients much lower than some commercial CR absorbers from the Eccosorb group. The experimental results justify the use of the new composite material as absorber at microwave frequencies.
Citation
Irena Zivkovic Christine Wandrey Biljana Bogicevic , "Alginate Beads and Epoxy Resin Composites as Candidates for Microwave Absorbers," Progress In Electromagnetics Research C, Vol. 28, 127-142, 2012.
doi:10.2528/PIERC12021308
http://www.jpier.org/PIERC/pier.php?paper=12021308
References

1. Zhao, D. L. and Z. M. Shen, "Microwave absorbing property and complex permittivity and permeability of epoxy composites containing Ni-coated and Ag filled carbon nanotubes," Composite Science and Technology, Vol. 68, 2902-2908, 2008.
doi:10.1016/j.compscitech.2007.10.006

2. Yang, R. B. and W. F. Liang, "Microwave properties of high aspect ratio carbonyl iron/epoxy absorbers," Journal of Applied Physics, Vol. 109, 07A311, 2011.
doi:10.1063/1.3536340

3. Gama, A. M. and M. C. Rezende, "Complex permeability and permittivity variation of carbonyl iron rubber in the frequency range of 2 to 18 GHz," Journal of Aerospace Technology and Management, Vol. 2, No. 1, 2010.
doi:10.5028/jatm.2010.02015962

4. Wollack, E. J., et al., "Electromagnetic and thermal properties of a conductively loaded epoxy," International Journal of Infrared and Millimeter Waves, Vol. 29, 51-61, 2008.
doi:10.1007/s10762-007-9299-4

5. Khalil, A. H. and E. H. Mansour, "Alginate encapsulated bifidobacteria survival in mayonnaise," Journal of Food Science, Vol. 63, 702-705, 1998.

6. Sultana, K., et al., "Encapsulation of probiotic bacteria with alginate starch and evaluation of survival in simulated gastrointestinal conditions and in yoghurt," International Journal of Food Microbiology, Vol. 62, 47-55, 2000.
doi:10.1016/S0168-1605(00)00380-9

7. Wang, N., et al., "Alginate encapsulation technology supports embryonic stem cells differentiation into insulin-producing cells," Journal of Biotechnology, Vol. 144, No. 4, 304-312, 2009.
doi:10.1016/j.jbiotec.2009.08.008

8. Zimmermann, H., et al., "Towards a medically approved technology for alginate based microcapsules allowing long-term immunoisolated transplantation," Journal of materials science: Materials in Medicine, Vol. 16, No. 6, 491-501, 2005.
doi:10.1007/s10856-005-0523-2

9. Zivkovic, I. and A. Murk, "Characterization of magnetically loaded microwave absorbers," Progress In Electromagnetics Research B, Vol. 33, 277-280, 2011.
doi:10.2528/PIERB11071108

10. Bohren, C. F. and D. R. Hufman, Absorption and Scattering of Light by Small Particles, Wiley-VCH, Weinheim, 2004.

11. Matzler, C., "MATLAB functions for mie scattering and absorption,", IAP Research Report, No. 2002-08, Institut furAngewandte Physik, UniversitÄat Bern, 2002.

12. Sihvola, A., Electromagnetic Mixing Formulas and Applications, IEE Electromagnetic Waves Series, 47, TJ International, UK, 1999.