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- Title
Thermal decomposition behavior of GO/TKX-50 with different oxidation degree.
- Authors
Wang, Yue; Wang, Suwei; Guo, Fan; Zong, Huzeng; Yang, Cao; Xiao, Lei; Hao, Gazi; Jiang, Wei
- Abstract
Chemically modified graphene is commonly used as a desensitizer and combustion catalyst for energetic composites. However, the interaction between polar functional groups on chemically modified graphene and energetic ionic materials has not been explored systematically. Herein, we use graphene oxide (GO) with different oxidation degrees and dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate (TKX-50) as experimental systems to investigate the effect of oxygen-containing functional groups of GO on the pyrolysis mechanism of energetic ionic materials. The experimental results show that the thermal decomposition of TKX-50 is affected by different oxidation degrees of GO, among which the highly oxidized GO (HGO) has the greatest effect. The thermal decomposition temperature of GO/TKX-50 composites decrease with the increase of oxygen-containing group content. The decomposition products of GO/TKX-50 composites are consistent with those of TKX-50, but the content of gas products changed. We argue that the interaction between the oxygen-containing groups of GO and TKX-50 controls the pyrolysis mechanism by promoting the transfer of protons in hydroxyl, (NH3OH)+, and (NH4)+, at least in the context of oxygen-containing functional groups. This work provides a route to manipulate the thermal decomposition temperature and gaseous product of the final compound through functional group content, which is helpful to study the polar functional group of chemically modified graphene for the modification of energetic materials.
- Subjects
FUNCTIONAL groups; GRAPHENE oxide; OXIDATION; GRAPHENE; PYROLYSIS
- Publication
Journal of Thermal Analysis & Calorimetry, 2023, Vol 148, Issue 24, p13825
- ISSN
1388-6150
- Publication type
Article
- DOI
10.1007/s10973-023-12597-0