Accession Number : ADA288787

Title :   Characterization of Plastic Bonded Explosives by Pyrolysis-Gas Chromatography and Multivariate Data Analysis, Development of the Procedure (Karakterisering van kunststof gebonden explosieven met pyrolyse-gaschromatografie en multivariate data analyse. Ontwikkeling van de procedure).

Descriptive Note : Final rept.,

Corporate Author : PRINS MAURITS LABORATORIUM TNO RIJSWIJK (NETHERLANDS)

Personal Author(s) : Rietjens, M.

PDF Url : ADA288787

Report Date : OCT 1994

Pagination or Media Count : 33

Abstract : A further development of the procedure based on pyrolysis-gas chromatography (Py-GC) for the characterization of plastic bonded explosives (PBX's) is described. After grinding, the PBX samples were pressed on a pyrolysis wire followed by Py-GC analysis. The peak areas obtained were normalized and submitted to multivariate data analysis. The use of principal component analysis (PCA) was tested on 5 samples which differed slightly in composition and age. The results were promising and showed that PCA is a powerful tool for the differentiation between PBX samples. The pressure by which the samples were pressed on the pyrolysis wire appeared to be an important parameter. This parameter was optimized together with the pyrolysis temperature and the amount of sample. The optimization experiment was carried out with 2 PBX samples which differed only in crosslink density. It turned out that it was difficult to find optima in the parameters resulting in a maximal difference between the 2 samples. The following settings of the parameters were selected: 5.2 tonnes, 75 mg and 610 C.

Descriptors :   *GAS CHROMATOGRAPHY, *PLASTIC BONDED EXPLOSIVES, *PYROLYSIS, DATA PROCESSING, DENSITY, PEAK VALUES, OPTIMIZATION, TEMPERATURE, NETHERLANDS, WIRE, MULTIVARIATE ANALYSIS, CROSSLINKING(CHEMISTRY), VAN DE GRAAFF GENERATORS, GRINDING.

Subject Categories : Physical Chemistry
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE