Photofading in cotton fibers dyed using red, yellow, and blue direct dyes during examination with microspectrophotometry (MSP)
| Autor: | Sydney Brooks, Julie L. Bitter, Amanda L. Forster, Stephanie S. Watson, Samuel E. Rosenthal |
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| Rok vydání: | 2017 |
| Předmět: |
Textile
Materials science medicine.disease_cause 01 natural sciences Article Pathology and Forensic Medicine Analytical Chemistry Absorbance 03 medical and health sciences 0302 clinical medicine Optics parasitic diseases Microscopy Materials Chemistry medicine 030216 legal & forensic medicine Fiber Physical and Theoretical Chemistry Spectroscopy business.industry 010401 analytical chemistry 0104 chemical sciences Color loss business Law Ultraviolet Nuclear chemistry |
| Zdroj: | Forensic Chemistry. 5:72-78 |
| ISSN: | 2468-1709 |
| DOI: | 10.1016/j.forc.2017.06.006 |
| Popis: | Microspectrophotometry (MSP) is a rapid, nondestructive technique for the analysis of color in textile fibers. This technique combines microscopy and ultraviolet (UV)/visible (Vis) spectroscopy, allowing for very small colored samples, like dyed textile fibers, to be analyzed directly and thereby eliminates the need for time consuming and destructive extractions. While MSP is generally accepted to be a nondestructive evaluation method, a loss of color during analysis, or photofading can occur. In this work, cotton fabric dyed with blue, yellow, and red direct dyes at different concentrations. Dye photofading during MSP examination was investigated by measuring the absorbance at a specific position on the fibers from these fabrics, periodically over the course of 30 min. Visible color loss and a reduction in absorbance was observed for all three colors, but was most pronounced for the fibers dyed red. A major goal of this study is to increase awareness of the photofading phenomenon when analyzing cotton fibers using MSP. |
| Databáze: | OpenAIRE |
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