What is the effect of lipophilic polymeric ionic liquids on friction and wear?
Abstract
In this work, methacrylate-type ionic liquid (IL) monomers containing a quaternary ammonium cation and two different counter-anions were synthesized and used as co-monomers to obtain functional poly(alkyl methacrylates) (PAMAs) as friction and wear reducing additives for lubricants. The effect of molecular weight, polymer topology (random or diblock), and IL counter anion on friction and wear behavior of polymer PAO (poly-alpha olefin) solutions have been investigated. The results were compared to those of PAO solutions additized with a small molecule, non-polymeric ionic liquid, or non-ionic copolymers containing 2-(dimethylamino)ethyl methacrylate (DMAEMA) as the polar comonomer. No clear correlation between polymer molecular weight and friction or wear behavior was observed. Random ionic liquid copolymers led to lower wear volumes than their block counterparts. Polymers containing dicyanamide (DCA) counter anion showed lower wear volume compared to those containing bis((trifluoromethyl)sulfonyl)imide (TFSI) anion. Surprisingly, none of the IL copolymers studied outperformed the DMAEMA containing block copolymer in terms of wear volume reduction, suggesting the IL moiety had no beneficial effect on wear.
- Authors:
-
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Univ. of Tennessee, Knoxville, TN (United States)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE) - Office of Vehicle Technology; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE
- OSTI Identifier:
- 1500117
- Alternate Identifier(s):
- OSTI ID: 1492619; OSTI ID: 1548004
- Report Number(s):
- PNNL-SA-134552
Journal ID: ISSN 1381-5148; 151034
- Grant/Contract Number:
- AC02-06CH11357; AC05-76RL01830; VT0604000-05450-1004897; DE_AC06–76RLO 1830
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Reactive and Functional Polymers
- Additional Journal Information:
- Journal Volume: 131; Journal Issue: C; Journal ID: ISSN 1381-5148
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; RAFT polymerization; ionic liquid polymethacrylates; lipophilic ionic liquid polymers; low molecular weight PILs; polymeric ionic liquids
Citation Formats
Bapat, Abhijeet P., Erck, Robert, Seymour, Bryan T., Zhao, Bin, and Cosimbescu, Lelia. What is the effect of lipophilic polymeric ionic liquids on friction and wear?. United States: N. p., 2018.
Web. doi:10.1016/j.reactfunctpolym.2018.07.020.
Bapat, Abhijeet P., Erck, Robert, Seymour, Bryan T., Zhao, Bin, & Cosimbescu, Lelia. What is the effect of lipophilic polymeric ionic liquids on friction and wear?. United States. https://doi.org/10.1016/j.reactfunctpolym.2018.07.020
Bapat, Abhijeet P., Erck, Robert, Seymour, Bryan T., Zhao, Bin, and Cosimbescu, Lelia. Mon .
"What is the effect of lipophilic polymeric ionic liquids on friction and wear?". United States. https://doi.org/10.1016/j.reactfunctpolym.2018.07.020. https://www.osti.gov/servlets/purl/1500117.
@article{osti_1500117,
title = {What is the effect of lipophilic polymeric ionic liquids on friction and wear?},
author = {Bapat, Abhijeet P. and Erck, Robert and Seymour, Bryan T. and Zhao, Bin and Cosimbescu, Lelia},
abstractNote = {In this work, methacrylate-type ionic liquid (IL) monomers containing a quaternary ammonium cation and two different counter-anions were synthesized and used as co-monomers to obtain functional poly(alkyl methacrylates) (PAMAs) as friction and wear reducing additives for lubricants. The effect of molecular weight, polymer topology (random or diblock), and IL counter anion on friction and wear behavior of polymer PAO (poly-alpha olefin) solutions have been investigated. The results were compared to those of PAO solutions additized with a small molecule, non-polymeric ionic liquid, or non-ionic copolymers containing 2-(dimethylamino)ethyl methacrylate (DMAEMA) as the polar comonomer. No clear correlation between polymer molecular weight and friction or wear behavior was observed. Random ionic liquid copolymers led to lower wear volumes than their block counterparts. Polymers containing dicyanamide (DCA) counter anion showed lower wear volume compared to those containing bis((trifluoromethyl)sulfonyl)imide (TFSI) anion. Surprisingly, none of the IL copolymers studied outperformed the DMAEMA containing block copolymer in terms of wear volume reduction, suggesting the IL moiety had no beneficial effect on wear.},
doi = {10.1016/j.reactfunctpolym.2018.07.020},
journal = {Reactive and Functional Polymers},
number = C,
volume = 131,
place = {United States},
year = {Mon Jul 30 00:00:00 EDT 2018},
month = {Mon Jul 30 00:00:00 EDT 2018}
}
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Works referencing / citing this record:
Poly(alkylimidazolium bis(trifluoromethylsulfonyl)imide)-Based Polymerized Ionic Liquids: A Potential High-Performance Lubricating Grease
journal, January 2019
- Wu, Jian; Mu, Liwen; Feng, Xin
- Advanced Materials Interfaces, Vol. 6, Issue 5