溶液染色纤维的微观识别和表征
Kelly Brinsko-Beckert1, Skip Palenik1, Otyllia R Abraham1
1Microtrace, LLC, Elgin, Illinois, USA.
Journal of forensic sciences
|November 22, 2023
概括
溶液染色纤维的法医分析现在可以通过一种新的显微镜方法来增强. 这种技术可以对合成纤维中的颜料进行特征化,有助于在案例工作中检查痕迹证据.
科学领域:
- 法医科学 法医科学 法医科学
- 材料科学 材料科学 材料科学
- 织科学 织科学
背景情况:
- 在聚合物挤出过程中染色的溶液染色纤维越来越多地用于织品.
- 传统的纤维分析往往忽略了溶液染料材料的独特色素特性.
- 这些颜料具有未开发的微观特性,对法医比较有价值.
研究的目的:
- 开发一种基于显微镜的方法来识别溶液染色纤维.
- 为了描述这些纤维中的颜料的颜色和光学特性.
- 为法医检查人员提供一种系统的方法来分析有色素纤维.
主要方法:
- 分析了76种合成纤维 (聚烯,尼龙,聚, rayon) 在各种颜色和应用中.
- 使用偏光,光和油浸式显微镜.
- 长度和横截面检查的纤维.
主要成果:
- 开发了一种方法来识别溶液染色纤维,并描述它们的颜料.
- 纤维含有16种不同的颜料,共识了260种颜料.
- 颜料形态不同 (角形,长,圆形等). ),并且约40%呈现光.
结论:
- 开发的显微镜技术使得溶液染色纤维中的颜料能够进行详细的表征.
- 这种方法提高了来自合成织品的痕迹证据的法医价值.
- 提供了一个基本的数据集,用于在案例工作中利用色素特征.
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