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Micro-morphology of nitrocellulose in gun propellants

: Böhnlein-Mauß, Jutta

Volltext urn:nbn:de:0011-n-3201644 (101 KByte PDF)
MD5 Fingerprint: 910508962e46c5e16b60a6d259834b4e
Erstellt am: 9.1.2015

Fraunhofer-Institut für Chemische Technologie -ICT-, Pfinztal:
Energetic Materials. Particles, Processing, Applications : 45th International Annual Conference of ICT, June 24 - 27, 2014, Karlsruhe, Germany
Pfinztal: Fraunhofer ICT, 2014
Fraunhofer-Institut für Chemische Technologie (International Annual Conference) <45, 2014, Karlsruhe>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ICT ()

Gun propellants mainly consist of ingredients like nitrocellulose and plasticizers. An appropriate plasticizer forms together with the nitrocellulose a gel. This process of gelation may be supported using a good solvent for nitrocellulose during the manufacturing process.
In order to have an insight in the structure of gun propellants and to evaluate the gelation activity of different plasticizers polarized light microscopic and scanning electron microscopy investigations of different gun propellant powders were performed at Fraunhofer-ICT.
In this paper the results of these investigations are shown. Polarized light microscopy enables to structural investigations of different materials, such as propellants. There is a significantly clear image of specific features, which appear in their maximum interference colours. The magnification lies in the region of 1 to 1000 µm. Crystal distribution and homogeneity of the propellant can be investigated. Especially the degree of crystallinity of nitrocellulose in gun propellants can be qualitatively described. The results of the scanning electron microscopy investigations are in good correspondence with the polarized light microscopic investigations. The following pictures show some results of these investigations of a double base gun propellant.