uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Degradation of Nitro-cellulose. Some Microcalorimetric Studies
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry, Analytical Chemistry.
1992 In: Symposium on Chemical Problems Connected with the Stability of Explosives, ISSN 0348-7180, Vol. 9, 69-75 p.Article in journal (Refereed) Published
Place, publisher, year, edition, pages
1992. Vol. 9, 69-75 p.
Identifiers
URN: urn:nbn:se:uu:diva-91333OAI: oai:DiVA.org:uu-91333DiVA: diva2:164027
Available from: 2004-03-31 Created: 2004-03-31Bibliographically approved
In thesis
1. Reactions in the System Nitro-cellulose/ Diphenylamine with Special Reference to the Formation of a Stabilizing Product Bonded to Nitro-cellulose
Open this publication in new window or tab >>Reactions in the System Nitro-cellulose/ Diphenylamine with Special Reference to the Formation of a Stabilizing Product Bonded to Nitro-cellulose
2004 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The methods HPLC, microcalorimetry and FTIR together with chemometry, provide good analytical tools to follow the degradation of nitro-cellulose.

The degradation products formed from diphenylamine (DPA) during storage can be followed with HPLC. FTIR, together with chemometry, also gives the precision needed for safety control of propellants.

Nitro-cellulose (NC) containing DPA obtained a green colour already after 1 day storage at 70°C. About 10% of the stabilizer, and its derivatives, added were not extractable giving an extended time to autocatalysis. This time could be extended up to 70 days at 70°C for an extracted sample compared to about 3 days for non-stabilized NC. This was not shown before.

Aged and extracted NC samples contained a non-extractable nitro compound. The most likely compound is 2,4´-dinitroDPA, probably bonded to NC via the amine nitrogen. The bonding to NC occurs after the formation of NNODPA. This is something not described before.

Using another batch of nitro-cellulose to find out if a chemical bonding occurs gave inconclusive results as a blue NC was formed. Low molecular NC with high stability was obtained. A chemical bonding probably occurs when using NNODPA as a stabilizer, indicating NNODPA plays a key role.

The use of FTIR/chemometry is a promising method to use when studying small chemical changes. The described methodology should be used to find out more about the compound(s) being bonded to NC.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2004. 70 p.
Series
Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1104-232X ; 935
Keyword
Analytical chemistry, Nitro-cellulose, NC, Propellant, Stabilizer, Diphenylamine, DPA, Stability, Shelf-life, Chemometry, FTIR, HPLC, Microcalorimetry, Analytisk kemi
National Category
Analytical Chemistry
Identifiers
urn:nbn:se:uu:diva-3989 (URN)91-554-5868-8 (ISBN)
Public defence
2004-04-26, B41, BMC, Husargatan 3, Uppsala, 10:00
Opponent
Supervisors
Available from: 2004-03-31 Created: 2004-03-31Bibliographically approved

Open Access in DiVA

No full text

By organisation
Analytical Chemistry

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 378 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf