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Advances in Materials Science and Engineering
Volume 2014, Article ID 429314, 8 pages
http://dx.doi.org/10.1155/2014/429314
Research Article

Vibrational and Compositional Analysis Associated with the Color of Guadua angustifolia Kunth Variety Bicolor (GAKVB)

Laboratorio de Propiedades Ópticas de los Materiales (POM), Universidad Nacional de Colombia, Manizales, Campus La Nubia, Colombia

Received 3 October 2013; Accepted 31 December 2013; Published 13 February 2014

Academic Editor: Gang Liu

Copyright © 2014 J. I. Cárdenas and C. Vargas-Hernandez. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The vibrational modes and compositional behavior of plant material of Guadua angustifolia Kunth Variety Bicolor (GAKVB) and the characteristics associated with color changes were evaluated by Raman, infrared, and energy-dispersive X-ray spectroscopy. In the vibrational spectra, the frequencies of 1598, 2099, and 845 cm−1 were associated with yellow and blue pigments. These pigments can be found in natural organic dyes of vegetable origin, such as indigo blue (anil or pastel), extracted from Central American shrubs (Indigofera and indaco) (Domenech, 2010), in some pigments synthesized in solid-state reactions from aluminum oxides, such as CaAl12O19, that have a turquoise color (Costa et al., 2009), and in Indian yellow (MgC19H16O11·5H2O). Using an immersion test, it was shown that the color was stable and that no loss of color occurred when photosynthesis was halted in the sample. The green and yellow stripes are assigned to Fe, N, Mg, and Si compounds. The yellow is due to decrease of Fe, Mg, and elemental Si. Results are obtained using energy-dispersive X-ray spectroscopy and Raman measurements.