Materials mechanochemistry What is
Description: Materials mechanochemistry What is mechanochemistry? Classical definition (Ostwald, 1919): Mechanochemistry is a branch of chemistry that studies the chemical and physicochemical transformations of substances under the influence of
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slide1. Materials mechanochemistry<br>
slide2. What is mechanochemistry?
Classical definition (Ostwald, 1919):
"Mechanochemistry is a branch of chemistry that studies the chemical and physicochemical transformations of substances under the influence of mechanical energy."
Classical definition (Ostwald, 1919):
"Mechanochemistry is a branch of chemistry that studies the chemical and physicochemical transformations of substances under the influence of mechanical energy."
Key concepts:
Mechanical energy → Chemical transformations
Alternative to thermal and photochemical processes
Solid-state reactions without solvents<br>
slide3. History of the Development of Mechanochemistry
Antiquity (before the 19th century):
Use of a mortar and pestle (Ancient Egypt, China)
Grinding of minerals and medicinal plants
19th century - The Emergence of Science:
1820s: M. Faraday - First Observations of Mechanochemical Effects
1891: M. Carey Lee - "Mechanical Chemistry"
1919: W. Ostwald - The Term "Mechanochemistry"
20th Century - Development:
1940s-1960s: Works by P.Yu. Butyagin, V.V. Boldyrev (USSR)
1970s-1980s: Systematic Mechanism Studies
1990s: T. Kosugi, F. Todea - New Applications
21st Century - Modernity:
2010s: Mechanochemistry as "Green Chemistry"
2020s: Industrial Scaling, Digitalization<br>
slide4. Classification of mechanochemical processes
1. By type of mechanical action:
Crushing (grinding, abrasion)
Shear deformation (friction, torsion)
Impact (crushing)
Compression (extrusion)
2. By nature of chemical transformations:
Mechanosynthesis — formation of new compounds
Mechanoactivation — increased reactivity
Mechanodestruction — destruction of chemical bonds
Mechanical phase transitions — amorphization, polymorphic transformations
3. By phase composition of the system:
Solid-solid (dry grinding)
Solid-liquid (liquid-assisted grinding, LAG)
Solid-gas<br>
slide5. Mechanochemistry in Nature
Geological Processes:
Plate Tectonics — Tribochemical Reactions Due to Friction
Formation of Minerals in Fault Zones
Metamorphism Under Pressure
Example: Formation of Pseudotachylytes (Impact Glass)
Biological Systems:
Biomechanochemistry of Bone — Osteocytes Respond to Mechanical Stress
Grinding of Food in Bird Stomachs (Gastroliths)
Sonoluminescence — Mechanochemistry from Ultrasound in Liquids
Mechanotransduction — Conversion of Mechanical Signals into Biochemical Signals
Atmospheric Phenomena:
Triboelectricity in Dust Storms
Frictional Electrification of Ice Particles in Thunderclouds<br>
slide6. Applications in Technology and Industry
Materials Science:
Synthesis of Ceramics, Composites, and Nanomaterials
Mechanical Alloying of Metals and Alloys
Surface Modification
Chemical Industry:
Synthesis of Organic Compounds Without Solvents
Production of Pigments and Dyes
Catalysts
Pharmaceuticals:
Synthesis of Active Pharmaceutical Ingredients (APIs)
Improving Bioavailability
Creation of Cocrystals
Construction:
Cement Activation
Construction Waste Recycling
Composite Materials
Ecology:
Waste Recycling (Batteries, Electronics, Plastics)
"Green Chemistry" — Minimizing Solvents
Remediation of Contaminated Soils
Energy:
Materials for Batteries and Supercapacitors
Hydrogen Storage<br>
slide7. Why is mechanochemistry important today?
Environmental Benefits:
✓ Solvent-free or minimal solvent use (up to 100% atom economy)
✓ Low energy consumption compared to thermal methods
✓ Reduction in production waste
Economic Benefits:
✓ Reduced production costs
✓ Simplification of process flowsheets
✓ Short process times (minutes vs. hours/days)
Scientific Opportunities:
✓ Access to new compounds and materials
✓ Control over structure and morphology
✓ Unique nonequilibrium states
Prospects:
Growing field: >2000 publications/year (2024)
Integration with other methods (photochemistry, electrochemistry)
Industrial scalability<br>
slide2. What is mechanochemistry?
Classical definition (Ostwald, 1919):
"Mechanochemistry is a branch of chemistry that studies the chemical and physicochemical transformations of substances under the influence of mechanical energy."
Classical definition (Ostwald, 1919):
"Mechanochemistry is a branch of chemistry that studies the chemical and physicochemical transformations of substances under the influence of mechanical energy."
Key concepts:
Mechanical energy → Chemical transformations
Alternative to thermal and photochemical processes
Solid-state reactions without solvents<br>
slide3. History of the Development of Mechanochemistry
Antiquity (before the 19th century):
Use of a mortar and pestle (Ancient Egypt, China)
Grinding of minerals and medicinal plants
19th century - The Emergence of Science:
1820s: M. Faraday - First Observations of Mechanochemical Effects
1891: M. Carey Lee - "Mechanical Chemistry"
1919: W. Ostwald - The Term "Mechanochemistry"
20th Century - Development:
1940s-1960s: Works by P.Yu. Butyagin, V.V. Boldyrev (USSR)
1970s-1980s: Systematic Mechanism Studies
1990s: T. Kosugi, F. Todea - New Applications
21st Century - Modernity:
2010s: Mechanochemistry as "Green Chemistry"
2020s: Industrial Scaling, Digitalization<br>
slide4. Classification of mechanochemical processes
1. By type of mechanical action:
Crushing (grinding, abrasion)
Shear deformation (friction, torsion)
Impact (crushing)
Compression (extrusion)
2. By nature of chemical transformations:
Mechanosynthesis — formation of new compounds
Mechanoactivation — increased reactivity
Mechanodestruction — destruction of chemical bonds
Mechanical phase transitions — amorphization, polymorphic transformations
3. By phase composition of the system:
Solid-solid (dry grinding)
Solid-liquid (liquid-assisted grinding, LAG)
Solid-gas<br>
slide5. Mechanochemistry in Nature
Geological Processes:
Plate Tectonics — Tribochemical Reactions Due to Friction
Formation of Minerals in Fault Zones
Metamorphism Under Pressure
Example: Formation of Pseudotachylytes (Impact Glass)
Biological Systems:
Biomechanochemistry of Bone — Osteocytes Respond to Mechanical Stress
Grinding of Food in Bird Stomachs (Gastroliths)
Sonoluminescence — Mechanochemistry from Ultrasound in Liquids
Mechanotransduction — Conversion of Mechanical Signals into Biochemical Signals
Atmospheric Phenomena:
Triboelectricity in Dust Storms
Frictional Electrification of Ice Particles in Thunderclouds<br>
slide6. Applications in Technology and Industry
Materials Science:
Synthesis of Ceramics, Composites, and Nanomaterials
Mechanical Alloying of Metals and Alloys
Surface Modification
Chemical Industry:
Synthesis of Organic Compounds Without Solvents
Production of Pigments and Dyes
Catalysts
Pharmaceuticals:
Synthesis of Active Pharmaceutical Ingredients (APIs)
Improving Bioavailability
Creation of Cocrystals
Construction:
Cement Activation
Construction Waste Recycling
Composite Materials
Ecology:
Waste Recycling (Batteries, Electronics, Plastics)
"Green Chemistry" — Minimizing Solvents
Remediation of Contaminated Soils
Energy:
Materials for Batteries and Supercapacitors
Hydrogen Storage<br>
slide7. Why is mechanochemistry important today?
Environmental Benefits:
✓ Solvent-free or minimal solvent use (up to 100% atom economy)
✓ Low energy consumption compared to thermal methods
✓ Reduction in production waste
Economic Benefits:
✓ Reduced production costs
✓ Simplification of process flowsheets
✓ Short process times (minutes vs. hours/days)
Scientific Opportunities:
✓ Access to new compounds and materials
✓ Control over structure and morphology
✓ Unique nonequilibrium states
Prospects:
Growing field: >2000 publications/year (2024)
Integration with other methods (photochemistry, electrochemistry)
Industrial scalability<br>