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Amide/Amino-Based Functional Additives for Lubricants: Structure, Antimicrobial Activity and Wear Resistance
Jolanta Drabik1, Kamil Korasiak2, Justyna Chrobak2
1Łukasiewicz Research Network-Institute for Sustainable Technologies, 26-600 Radom, Poland.
Molecules (Basel, Switzerland)
|January 11, 2024
Summary
Surface-active amide compounds in lubricants significantly reduce wear and slow oxidation. These additives also exhibit bactericidal properties against common bacteria like Staphylococcus aureus and Salmonella enteritica.
Area of Science:
- Tribology
- Materials Science
- Microbiology
Background:
- Lubricants are essential for reducing friction and wear in mechanical systems.
- Oxidation stability and wear resistance are critical performance parameters for lubricants.
- The development of multifunctional additives can enhance lubricant performance and introduce new properties.
Purpose of the Study:
- To evaluate the impact of surface-active amide compounds on lubricant properties.
- To assess the anti-wear and antioxidant capabilities of novel lubricant additives.
- To investigate the bactericidal potential of these modified lubricants.
Main Methods:
- Boundary friction tests were conducted to measure wear under limiting load conditions.
- Oxidation stability was assessed for lubricants with and without amide-based additives.
- Antibacterial activity was tested against Staphylococcus aureus and Salmonella enteritica.
Main Results:
- Surface-active additives reduced wear marks, lowering the limiting load of wear (Goz/40 parameter).
- Lubricants with mono-15 and 15-4-15 additives demonstrated enhanced oxidation stability.
- Both additives exhibited significant bactericidal effects against Gram-positive and Gram-negative bacteria.
Conclusions:
- Amide-containing surfactants effectively improve the anti-wear and antioxidant properties of lubricants.
- Mono-15 and 15-4-15 additives provide enhanced lubricant performance and confer bactericidal activity.
- These multifunctional additives offer potential for advanced lubricant formulations with improved durability and hygiene.
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