The Identification Characteristics Degradation of PlasticMotorcycle’s Light from Ultraviolet Radiationto Apply for Forensic Science
Keywords:
Degradation of plastic, Plastic motorcycle’s light, QUV accelerated weathering, Fourier transform infrared spectroscopyAbstract
The purpose of this study was changing degradation of plastic motorcycle’s light from ultraviolet radiation and comparison of the degradation of plastic before and after QUV accelerated weathering detection by fourier transform infrared spectroscopy (FTIR). Divide the plastic test for 4 sets, put set 1, 2 and 3 into the QUV accelerator weathering conditions for one, two and three weeks, while the fourth is a set of comparison.The graph ofall four setshad a peak at the same period of wave number but the absorbance unit is different. The fourth set which is not accelerated by QUV has the absorbance minimum. Plastic set 1, 2 and 3 with QUV accelerated weathering has the absorbance decrease respectively. It concluded that the use of FTIR analysis helps determine its indicative lifespan of plastic motorcycle’s light that test without damaging the specimen. This study is an alternative that can be applied in a forensic identification.
References
Alain Copinet, Celine Bertrand, Stephanie Govindin, Veronique Coma, Yves Couturier. (2004). Effects of ultraviolet light(315 nm), temperatureand relative humidity on the degradationof polylactic acid plastic films.Chemosphere 55 ; 763–773.
Department of Land Transport, Ministry of Transport. (2015).Annual report 2015.Bangkok:Published by The Agricultural Co-operative Faderation of Thailand., Ltd.
J.V. Gulminea, P.R. Janissekb, H.M. Heisec, L. Akcelrudd. (2002). Degradation profile of polyethylene after artificial accelerated weathering. Published by Elsevier Science Limited,Polymer Degradation and Stability 79; 385-397.
Mark Maric,Wilhelm van Bronswijk, Simon W. Lewis, Kari Pitts. (2013). Synchrotron FTIR characterisation of automotive primer surfacerpaint coatings for forensic purposes. Department of Chemistry, Curtin University of Technology, Perth, Western Australia, Australia.
Royal Thai Police Headquarters. (2015). The Situation of ReportedTraffic Accidents by Type ofVehicles, Whole Kingdom. Access [3 March 2015]. from [www.roadsafetycontrol.com/rsc-stat-main.html?rsc-statmain.html?cid=29].
Sawag Maneekut. (2009). Legal Issues in the use of Discretion by Investigation Officials as to the Gathering of Real Evidence, Expert Witness and Forensic Science : Case Studyon Road Traffic Litigation. Department of Law Graduate School, Dhurakij Pundit University.
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