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Title: Polymerization of sodium-doped liquid nitrogen under pressure

Authors:
;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1408168
Grant/Contract Number:
AC52-07NA27344
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 96; Journal Issue: 18; Related Information: CHORUS Timestamp: 2017-11-09 09:23:35; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Cormier, M. M. E., and Bonev, S. A. Polymerization of sodium-doped liquid nitrogen under pressure. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.96.184104.
Cormier, M. M. E., & Bonev, S. A. Polymerization of sodium-doped liquid nitrogen under pressure. United States. doi:10.1103/PhysRevB.96.184104.
Cormier, M. M. E., and Bonev, S. A. 2017. "Polymerization of sodium-doped liquid nitrogen under pressure". United States. doi:10.1103/PhysRevB.96.184104.
@article{osti_1408168,
title = {Polymerization of sodium-doped liquid nitrogen under pressure},
author = {Cormier, M. M. E. and Bonev, S. A.},
abstractNote = {},
doi = {10.1103/PhysRevB.96.184104},
journal = {Physical Review B},
number = 18,
volume = 96,
place = {United States},
year = 2017,
month =
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on November 9, 2018
Publisher's Accepted Manuscript

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  • Alkali metal azides can be used as starting materials in the synthesis of polymeric nitrogen, a potential high-energy-density material. The structural evolutionary behaviors of nitrogen in CsN{sub 3} have been studied up to 200 GPa using particle swarm optimization structure search combining with density functional theory. Three stable new phases with C2/m, P2{sub 1}/m, and P-1 structure at pressure of 6, 13, and 51 GPa are identified for the first time. The phase transition to chain like structure (P-1 phase) occurs at a modest pressure 51 GPa, the azide ions N{sub 3}{sup −} (linear chains of three N atoms withmore » covalent bonds and interact weakly with each other) begin to show remarkable polymeric N properties in the CsN{sub 3} system. Throughout the stable pressure range, the structure is metallic and consists of N atoms in sp{sup 2} hybridizations. Our study completes the structural evolution of CsN{sub 3} under pressure and reveals that the introduced Cs atoms are responsible for the decreased synthesis pressure comparing to pure molecular nitrogen under compression.« less
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  • Since adiabatic polymerization of acrylamide (AA) has been studied very little and the information on the effect of copper ions on polymerization of AA prepared in dilute aqueous solutions is very limited, the features of adiabatic polymerization of AA in concentrated aqueous solutions in the presence of the potassium persulfate-sodium metabisulfite-copper sulfate redox initiating system were investigated in this study. The empirical equation for the overall rate of adiabatic polymerization of acrylamide in concentrated aqueous solutions was found, and the effective total activation energy, which decreases with an increase in the concentration of CuSO/sub 4/, was determined. An increase inmore » the molecular weight of the polymer with an increase in the concentration of the monomer and a decrease in the concentration of the components of the initiating system was demonstrated.« less
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