Rheological non-isothermal mechanistic investigation on the curing of glycidyl azide polymer with solid nanofillers

Liang, Taixin and Li, Chunzhi and Pan, Duo and Mai, Xianmin and Naik, Nithesh and Vupputuri, Sravanthi and Guo, Zhanhu (2021) Rheological non-isothermal mechanistic investigation on the curing of glycidyl azide polymer with solid nanofillers. Reactive and Functional Polymers, 158. ISSN 1381-5148

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Abstract

The effects of ammonium perchlorate (AP) and graphene oxide (GO) on the curing of glycidyl azide polymer (GAP) were investigated. The rheological parameters of GAP crosslinked by bispropargyl succinate (BPS) were investigated by rheometry instrument. The curing kinetics by the differential isoconversional method revealed that AP (1 wt%) increased the apparent activation energy from 72.98 to 76.41 kJ mol− 1 . However, the presence of GO (0.1 wt%) catalyzed the curing of GAP/triazole by decreasing the apparent activation energy to 62.86 kJ mol− 1 . The physical models revealed that the addition of GO changed the cure mechanism of GAP/BPS as it acted as new nucleation sites. The Fourier-transform infrared (FTIR) and X-ray photoelectron (XPS) results also showed that chemical groups on the surface of GO reacted with the hydroxyl groups of GAP, which changed the curing mechanism of GAP/BPS and improved the tension strength of the propellant by 104%.

Item Type: Article
Uncontrolled Keywords: Rheological non-isothermal method Composite materials Nanofillers Mechanical property Reaction mechanism
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 23 Apr 2021 09:52
Last Modified: 23 Apr 2021 09:52
URI: http://eprints.manipal.edu/id/eprint/156684

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