%0 Journal Article
%T Characteristics of Color Produced by Awa Natural Indigo and Synthetic Indigo
%A Miyoko Kawahito
%A Ryoko Yasukawa
%J Materials
%D 2009
%I MDPI AG
%R 10.3390/ma2020661
%X Color of cloth dyed with Awa natural indigo is quantitatively compared with color of the cloth dyed with synthetic indigo. Results showed that: 1) color produced by Awa natural indigo is bluer and brighter than color produced by synthetic indigo; 2) a single Gaussian function fits the profile of the running of color produced by Awa natural indigo and the running of color produced by synthetic indigo prepared with sodium hydrosulfite approximates a linear sum of two Gaussian functions; 3) before and after washing, color is quantitatively more uneven when produced by Awa natural indigo than when produced by synthetic indigo; 4) the diffusion coefficient of Awa natural indigo is lower than that of synthetic indigo; 5) color superiority of Awa natural indigorelates to smaller diffusion coefficient, slower reduction, poorer penetration, and higher dye aggregation.
%K Awa natural indigo
%K synthetic indigo
%K brightness of color
%K running of color
%K color unevenness
%K color fading
%U http://www.mdpi.com/1996-1944/2/2/661