The Study of Fiber Properties in Burial Conditions by Scanning Electron Microscope and Energy Dispersive X-ray Spectroscopy for Forensic Examination
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Abstract
The estimation of incident period for forensic examination depends on several factors. Evidence dynamics is of particular problem in the incident clarification. Evidences from the environment and clothing can be associated for more accurate and reliable examination. The aim of this research was to study the change of physical and chemical properties for the fabric fibers under simulated burial conditions using Scanning Electron Microscope and Energy Dispersive X-ray Spectroscopy (SEM/EDX) technique. Experimental research on the comparison study between natural fiber (cotton) and synthetic fiber (polyester) was performed. The selected fabric fibers were buried in different physical characteristics and acidity sandy loam soil at a depth of 500 mm and then recorded for a total period of 30 days. The results showed that peeling and tearing marks were physically observed in the cotton fibers. The fibers buried in acidic soil at different periods demonstrated a rough surface under SEM/EDX whereas polyester fibers were unable to be physically distinguished under tested conditions. From the chemical properties examination, the fabric fibers buried in soil at different periods were found to be significantly different at the 0.05 significance level. Therefore, it can be concluded that the cotton fiber is less durable than the polyester fiber. Moreover, the results can be used as a guideline for estimation of the burial period in order to support related scientific proof of evidence.
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