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Title: Examining the Chemical and Structural Properties that Influence the Sensitivity of Energetic Nitrate Esters

Abstract

The sensitivity of explosives is controlled by factors that span from intrinsic chemical reactivity and chemical intramolecular effects to mesoscale structure and defects, and has been a topic of extensive study for over 50 years. Due to these complex competing chemical and physical elements, a unifying relationship between molecular framework, crystal structure, and sensitivity has yet to be developed. In order to move towards this goal, ideally experimental studies should be performed on systems with small, systematic structural modifications, with modeling utilized to interpret experimental results. Pentaerythritol tetranitrate (PETN) is a common nitrate ester explosive that has been widely studied due to its use in military and commercial explosives. We have synthesized PETN derivatives with modified sensitivity characteristics by substituting the CCH 2ONO 2 moiety with other substituents, including CH, CNH 2, CNH3X, CCH 3, and PO. We relate the handling sensitivity properties of each PETN derivative to its structural properties, and discuss the potential roles of thermodynamic properties such as heat capacity and heat of formation, thermal stability, crystal structure, compressibility, and inter- and intramolecular hydrogen bonding on impact sensitivity. Reactive molecular dynamics (MD) simulations of the C/H/N/O-based PETN-derivatives have been performed under cook-off conditions that mimic those accessedmore » in impact tests. These simulations infer how changes in chemistry affect the subsequent decomposition pathways.« less

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1430013
Report Number(s):
LA-UR-17-29886
Journal ID: ISSN 2041-6520
Grant/Contract Number:
AC52-06NA25396
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Chemical Science
Additional Journal Information:
Journal Name: Chemical Science; Journal ID: ISSN 2041-6520
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Manner, Virginia W., Cawkwell, Marc, Kober, Edward M., Myers, Thomas, Brown, Geoff, Tian, Hongzhao, Snyder, Christopher, Perriot, Romain, and Preston, Daniel. Examining the Chemical and Structural Properties that Influence the Sensitivity of Energetic Nitrate Esters. United States: N. p., 2018. Web. doi:10.1039/C8SC00903A.
Manner, Virginia W., Cawkwell, Marc, Kober, Edward M., Myers, Thomas, Brown, Geoff, Tian, Hongzhao, Snyder, Christopher, Perriot, Romain, & Preston, Daniel. Examining the Chemical and Structural Properties that Influence the Sensitivity of Energetic Nitrate Esters. United States. doi:10.1039/C8SC00903A.
Manner, Virginia W., Cawkwell, Marc, Kober, Edward M., Myers, Thomas, Brown, Geoff, Tian, Hongzhao, Snyder, Christopher, Perriot, Romain, and Preston, Daniel. Fri . "Examining the Chemical and Structural Properties that Influence the Sensitivity of Energetic Nitrate Esters". United States. doi:10.1039/C8SC00903A. https://www.osti.gov/servlets/purl/1430013.
@article{osti_1430013,
title = {Examining the Chemical and Structural Properties that Influence the Sensitivity of Energetic Nitrate Esters},
author = {Manner, Virginia W. and Cawkwell, Marc and Kober, Edward M. and Myers, Thomas and Brown, Geoff and Tian, Hongzhao and Snyder, Christopher and Perriot, Romain and Preston, Daniel},
abstractNote = {The sensitivity of explosives is controlled by factors that span from intrinsic chemical reactivity and chemical intramolecular effects to mesoscale structure and defects, and has been a topic of extensive study for over 50 years. Due to these complex competing chemical and physical elements, a unifying relationship between molecular framework, crystal structure, and sensitivity has yet to be developed. In order to move towards this goal, ideally experimental studies should be performed on systems with small, systematic structural modifications, with modeling utilized to interpret experimental results. Pentaerythritol tetranitrate (PETN) is a common nitrate ester explosive that has been widely studied due to its use in military and commercial explosives. We have synthesized PETN derivatives with modified sensitivity characteristics by substituting the CCH2ONO2 moiety with other substituents, including CH, CNH2, CNH3X, CCH3, and PO. We relate the handling sensitivity properties of each PETN derivative to its structural properties, and discuss the potential roles of thermodynamic properties such as heat capacity and heat of formation, thermal stability, crystal structure, compressibility, and inter- and intramolecular hydrogen bonding on impact sensitivity. Reactive molecular dynamics (MD) simulations of the C/H/N/O-based PETN-derivatives have been performed under cook-off conditions that mimic those accessed in impact tests. These simulations infer how changes in chemistry affect the subsequent decomposition pathways.},
doi = {10.1039/C8SC00903A},
journal = {Chemical Science},
number = ,
volume = ,
place = {United States},
year = {Fri Mar 09 00:00:00 EST 2018},
month = {Fri Mar 09 00:00:00 EST 2018}
}

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