Super impact stable TATB explosives recrystallized by bicarbonate ionic liquids with a record solubility

Area of Science:

• Energetic materials science
• Materials chemistry

Background:

• 1,3,5-Triamino-2,4,6-trinitrobenzene (TATB) is a critical explosive for applications requiring extreme safety, such as nuclear weapons.
• Controlling TATB particle size and shape is crucial for weapon stability but is challenging due to its poor solubility.

Purpose of the Study:

• To develop a new recrystallization method for refining TATB.
• To improve the safety and stability characteristics of TATB through controlled particle morphology.

Main Methods:

• Recrystallization of TATB using bicarbonate ionic liquids.
• Characterization of recrystallized TATB particle morphology and size.
• Assessment of impact and friction sensitivity of the refined TATB.

Main Results:

• Bicarbonate ionic liquids achieved a record TATB solubility of 26.7 wt%.
• Recrystallized TATB formed uniform, spherical particles.
• The refined TATB exhibited extremely low sensitivity to impact (>100 J) and friction (>360 N).
• First-time reporting of experimental 1H and 13C NMR spectra for TATB in solution.

Conclusions:

• The bicarbonate ionic liquid recrystallization method effectively refines TATB, producing safer energetic materials.
• The enhanced particle properties contribute to improved weapon stability and handling safety.