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Forensic characterization of HDPE pipes by DSC
Madhuri Sajwan1, Saroj Aggarwal, R B Singh
1LNJN National Institute of Criminology and Forensic Science, Delhi, India.
Forensic Science International
|July 17, 2007
Summary
Differential Scanning Calorimetry (DSC) analysis of high-density polyethylene (HDPE) pipes revealed melting temperature variations. This parameter effectively differentiates HDPE pipes from various manufacturers and different diameters from the same source.
Area of Science:
- Materials Science
- Polymer Science
Background:
- High-density polyethylene (HDPE) pipes are widely used.
- Ensuring material consistency and source traceability is crucial for quality control.
Purpose of the Study:
- To investigate the utility of melting behavior analysis using Differential Scanning Calorimetry (DSC).
- To determine if DSC can differentiate between chemically similar HDPE pipe samples from different manufacturers and diameters.
Main Methods:
- Analysis of 28 HDPE pipe samples from 13 Indian manufacturers.
- Utilizing Differential Scanning Calorimetry (DSC) to examine melting behavior.
Main Results:
- Melting temperature was found to be a distinguishing characteristic.
- DSC successfully differentiated HDPE pipe samples from different sources.
- Samples of varying diameters from the same source also showed distinct melting profiles.
Conclusions:
- Melting temperature, as determined by DSC, is a viable criterion for differentiating HDPE pipe samples.
- This method aids in quality control and source identification of HDPE pipes.
