Next Article in Journal
Role of Lifshitz Invariants in Liquid Crystals
Next Article in Special Issue
Syntheses and Functional Properties of Phthalocyanines
Previous Article in Journal
Polymers Comprising Cholesterol: Synthesis, Self-Assembly, and Applications
Previous Article in Special Issue
A Method for Digital Color Analysis of Spalted Wood Using Scion Image Software
Materials 2009, 2(2), 661-673; doi:10.3390/ma2020661
Review

Characteristics of Color Produced by Awa Natural Indigo and Synthetic Indigo

1,*  and 2,*
1 Tokushima Prefectural Industrial Technology Center/11-2 Nishibari, Saiga, Tokushima 770-8021, Japan 2 Department of Chemistry and Materials Technology, Kyoto Institute of Technology/Matugasaki, Sakyo-ku, Kyoto 606-8585, Japan
* Authors to whom correspondence should be addressed.
Received: 12 May 2009 / Revised: 28 May 2009 / Accepted: 9 June 2009 / Published: 9 June 2009
(This article belongs to the Special Issue Functional Colorants)
View Full-Text   |   Download PDF [704 KB, uploaded 9 June 2009]   |   Browse Figures
SciFeed

Abstract

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.
Keywords: Awa natural indigo; synthetic indigo; brightness of color; running of color; color unevenness; color fading Awa natural indigo; synthetic indigo; brightness of color; running of color; color unevenness; color fading
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote |
RIS
MDPI and ACS Style

Kawahito, M.; Yasukawa, R. Characteristics of Color Produced by Awa Natural Indigo and Synthetic Indigo. Materials 2009, 2, 661-673.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert