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Sensors 2007, 7(10), 2139-2156; doi:10.3390/S7102139

Physical-Mechanical Properties of Nitrodopes Affected by Ultra-Violet Radiation

1
Faculty of Technology, 16000 Leskovac, Bulevar oslobodjenja 124, Serbia
2
Pomoravlje, Nis, Serbia
3
aculty of Agriculture, 11000 Belgrade, Nemanjna 6, Serbia
4
VS-VTI, 11000 Belgrade, Serbia
*
Author to whom correspondence should be addressed.
Received: 11 June 2007 / Accepted: 3 October 2007 / Published: 9 October 2007
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Abstract

The FTIR spectroscopy has been employed in this research work to monitor theprocess of nitrodope photodegradation, by measuring surfaces of bands typical of a nitrogroup. Nitric esters are subject to degradation, which is reflected on a quantitative ratio ofthe surfaces of the IR bands that originate from the nitric ester. The obtained results showthat the length of the UV rays’ activity on the samples over the time periods of 240, 480and 960 minutes directly affects the spectrum appearance of the same sample before andafter the irradiation. The longer the action time of the UV rays and the higher a masspercentage of nitrocellulose in the nitrodope is, the smaller the bands’ surfaces become, i.e.the level of degradation is higher. In order to confirm the degradation of nitrodope, thedegree of crosslinking has also been examined by determining the König hardness and alsothe mean viscosity molar mass has been defined repeatedly applying the capillaryviscosimetry method. View Full-Text
Keywords: UV-radiation; nitrodope; nitrocellulose; FTIR spectroscopy; König hardness UV-radiation; nitrodope; nitrocellulose; FTIR spectroscopy; König hardness
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MDPI and ACS Style

Cakić, S.; Raskovic, L.; Lačnjevac, Č.; Rajkovic, M.; Barać, M.; Stojanovic, M. Physical-Mechanical Properties of Nitrodopes Affected by Ultra-Violet Radiation. Sensors 2007, 7, 2139-2156.

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