Mechanochemistry and the Other Branches of Chemistry: Similarities and Differences

• Authors: L. Takacs
• Languages of publication: EN

Abstracts

EN

It is argued that mechanical action can induce a unique chemical reaction, if enough mechanical energy is concentrated in the bonds involved in the process to bypass the activation energy. This can happen at crack tips, at the core of dislocations, or at the asperities of colliding or sliding surfaces. A mechanical reaction is always complex, as the macroscopic work is distributed among many possible reaction sites. In comparison, an elementary photochemical reaction is induced by a single photon, while thermochemical reactions rely on the accidental concentration of energy by thermal fluctuations. The paper also compares mechanochemical synthesis in a ball mill with reactions under well-defined loading conditions and mechanochemical experiments carried out on the molecular scale. Closer interaction among those branches of mechanochemistry is urged.

Keywords

EN

81.20.Ev; 82.33.Pt; 82.30.-b

Discipline

• 82.30.-b: Specific chemical reactions; reaction mechanisms(for enzyme kinetics, see 82.39.Fk, and 87.15.R-; for protein folding dynamics, see 87.15.hm, and 87.15.Cc)
• 82.33.Pt: Solid state chemistry
• 81.20.Ev: Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation

• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 3
• Pages: 711-714

Dates

published

2012-03

received

2011-09-28

Contributors

author

L. Takacs

• Department of Physics, University of Maryland - Baltimore County, 1000 Hilltop Circle, Baltimore MD 21250, USA

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Identifiers

DOI

10.12693/APhysPolA.121.711