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Single fiber analysis by internal reflection infrared microspectroscopy
L Cho1, J A Reffner, B M Gatewood
1Central Police University, Dept. of Forensic Science, Taoyuan, Taiwan.
Journal of Forensic Sciences
|November 21, 2001
Summary
Attenuated total reflection (ATR) infrared microspectroscopy is ideal for analyzing single textile fibers and their surface finishes. This technique effectively reveals finishes like spin finishes and permanent press finishes on fibers, even bicomponent ones.
Area of Science:
- Analytical Chemistry
- Materials Science
- Textile Science
Background:
- Infrared microspectroscopy is crucial for material characterization.
- Analyzing single fibers and surface treatments presents unique challenges.
- Transmission infrared spectroscopy may be limited for certain sample types.
Purpose of the Study:
- To highlight the utility of Attenuated Total Reflection (ATR) for single fiber analysis.
- To demonstrate ATR's effectiveness in characterizing textile finishes.
- To present methods for analyzing complex fiber structures like bicomponent fibers.
Main Methods:
- Utilized Attenuated Total Reflection (ATR) infrared microspectroscopy for surface analysis.
- Employed transmission infrared microspectroscopy for comparative analysis.
- Applied spectral subtraction techniques for detailed component analysis.
Main Results:
- ATR successfully identified various textile finishes, including spin finishes, anti-static finishes, and permanent press finishes.
- ATR proved advantageous when transmission spectra were difficult to acquire or surface-specific data was needed.
- Combined ATR, transmission, and spectral subtraction enabled comprehensive analysis of bicomponent fibers.
Conclusions:
- ATR is a powerful and convenient technique for the surface analysis of single textile fibers.
- ATR provides valuable insights into the composition and application of textile finishes.
- Multi-technique approaches, including ATR, are effective for characterizing complex fiber systems.