TY - JOUR
T1 - Effects of alkyl chains on the physicochemical properties of nitroguanidine derivatives
AU - Chen, Fang
AU - Song, Siwei
AU - Wang, Yi
AU - Liu, Yucun
AU - Zhang, Qinghua
N1 - Publisher Copyright:
© 2020 The Authors
PY - 2020/12
Y1 - 2020/12
N2 - Propyl nitroguanidine (PrNQ) is an important nitroguanidine (NQ) derivative and is considered to be promising as a melt-cast carrier explosive (melting point: 98–99 °C) due to its low cost, low sensitivity, and good compatibility. However, the effects of alkyl chains on the physicochemical properties of nitroguanidine derivatives have not been well established. In this work, we investigated the physicochemical properties of three structurally similar nitroguanidine derivatives in detail, namely, propyl nitroguanidine (PrNQ), propargyl nitroguanidine (PraNQ), and isopropyl nitroguanidine (IPrNQ). These different three-carbon alkyl group substituents cause these nitroguanidine derivatives to form different crystal structures and intermolecular interactions (hydrogen bonds and van der Waals interactions), which in turn result in significantly different densities, melting points, decomposition temperatures, and detonation properties. These results demonstrate the important influence of the alkyl chain on the physicochemical properties of nitroguanidine derivatives and provide guidance for designing new alkyl-substituted energetic materials, especially for melt-cast explosives.
AB - Propyl nitroguanidine (PrNQ) is an important nitroguanidine (NQ) derivative and is considered to be promising as a melt-cast carrier explosive (melting point: 98–99 °C) due to its low cost, low sensitivity, and good compatibility. However, the effects of alkyl chains on the physicochemical properties of nitroguanidine derivatives have not been well established. In this work, we investigated the physicochemical properties of three structurally similar nitroguanidine derivatives in detail, namely, propyl nitroguanidine (PrNQ), propargyl nitroguanidine (PraNQ), and isopropyl nitroguanidine (IPrNQ). These different three-carbon alkyl group substituents cause these nitroguanidine derivatives to form different crystal structures and intermolecular interactions (hydrogen bonds and van der Waals interactions), which in turn result in significantly different densities, melting points, decomposition temperatures, and detonation properties. These results demonstrate the important influence of the alkyl chain on the physicochemical properties of nitroguanidine derivatives and provide guidance for designing new alkyl-substituted energetic materials, especially for melt-cast explosives.
KW - Energetic materials
KW - Melt-cast explosive
KW - Nitroguanidine derivatives
KW - Physicochemical properties
UR - http://www.scopus.com/inward/record.url?scp=85111348356&partnerID=8YFLogxK
U2 - 10.1016/j.enmf.2020.12.002
DO - 10.1016/j.enmf.2020.12.002
M3 - 文章
AN - SCOPUS:85111348356
SN - 2666-6472
VL - 1
SP - 157
EP - 164
JO - Energetic Materials Frontiers
JF - Energetic Materials Frontiers
IS - 3-4
ER -