THE SURFACE CHEMISTRY OF HMX,
Abstract
The solution adsorption properties of HMX were studied using a carbon-14 labled quaternary ammonium salt, stearyltrimethyl ammonium bromide (STAB). A solvent system consisting of 10% ethanol and 90% water gave acceptable isotherms on 10-micron HMX. The isotherm developed on HMX is the Langmuir type and may also be characterized as the H type of Giles. The ''knee'' of this isotherm is below the critical micelle concentration of the STAB solution, indicating that the plateau may be regarded as representing a real, saturated monolayer. Calculations based on the assumed surface area of an average size particle show that the amount of STAB actually absorbed is about half or less of the amount that would be adsorbed in a close-packed monolayer. This is indicative of the low surface energy of HMX. Desorption experiments show that the adsorption of STAB on HMX is reversible and hence physical in nature. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1963
- Accession Number
- AD0420548
Entities
People
- J. Haberman
- T. C. Castorina
Organizations
- Picatinny Arsenal