Nature of high reactivity of metal/solid oxidizer nanocomposites prepared by mechanoactivation: a review

Preface to the special section on mechanochemical synthesis

“…The article identifies the challenges, possibilities, and limitations of mechanochemical processing when preparing a wide variety of materials, including intermetallics, thermites, metal-metalloid, and metal-polymer composites. The review written by Streletskii et al [2] analyzed the role played by both the reactant defect structure and the contact surface area in the reactivity of four mechanically activated energetic M/solid oxidant composites (M = Al, Mg; solid oxidants = MoO 3 , polytetrafluoroethylene PTFE). The potentials of using short-term high-energy mechanical milling as a pre-conditioning step in combustion reactions are reviewed by Mukasyan and Rogachev [3].…”

Mechanochemical Transformations of Biomass into Functional Materials

“…Due to this high intensity of supplied energy, not only grinding but also more complex processes take place in planetary mills. [231,232] When the acceleration is above 200 m s À 2 , the temperature may rise by several hundred degrees. Thus, lower acceleration (50-200 m s À 2 ) is usually used for grinding plant raw materials.…”

Mechanochemical and Size Reduction Machines for Biorefining

“…Planetary rotation allows accelerating the grinding bodies to 2000 m/s 2 and even more [ 47 ], but the grinding modes providing acceleration of 200–600 m/s 2 are the most common ones. Because of the high intensity of a single mechanical action and the high density of supplied energy, not only grinding but also more complex processes take place in planetary activators [ 48 , 49 , 50 , 51 , 52 ]. The development of high-intensity grinders has significantly increased the number of studies focused on chemical reactions and processes induced by mechanical loading [ 18 , 53 , 54 , 55 ].…”