Dual functional star polymers for lubricants
Abstract
Star-shaped poly(alkyl methacrylate)s (PAMAs) with a three arm architecturewere designed, prepared and their performance as a dual additive (viscosity index improver and friction modifier) for engine oils was evaluated. Furthermore, the structure property relationships between the macromolecular structure and lubricant performance were studied, such as molecular weight and polarity effects on the viscosity index. Several copolymers of dodecylmethacrylate with polar methacrylates in various amounts and various topologies, were synthesized as model compounds. Star polymers with a polar content of at least 10% in a block or tapered block topology effectively reduced the friction coefficient in both mixed and boundary lubrication regimes. Furthermore, a polar content of 20% was efficient in reducing friction in both random and block topologies.
- Authors:
-
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- Work for Others (WFO); USDOE
- OSTI Identifier:
- 1330541
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- RSC Advances
- Additional Journal Information:
- Journal Volume: 6; Journal Issue: 89; Journal ID: ISSN 2046-2069
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; viscosity index improver; friction modifier; polyalkylmethacrylate copolymer; star polymer; lubricant additive
Citation Formats
Cosimbescu, Lelia, Robinson, Joshua W., Zhou, Yan, and Qu, Jun. Dual functional star polymers for lubricants. United States: N. p., 2016.
Web. doi:10.1039/C6RA17461B.
Cosimbescu, Lelia, Robinson, Joshua W., Zhou, Yan, & Qu, Jun. Dual functional star polymers for lubricants. United States. https://doi.org/10.1039/C6RA17461B
Cosimbescu, Lelia, Robinson, Joshua W., Zhou, Yan, and Qu, Jun. Mon .
"Dual functional star polymers for lubricants". United States. https://doi.org/10.1039/C6RA17461B. https://www.osti.gov/servlets/purl/1330541.
@article{osti_1330541,
title = {Dual functional star polymers for lubricants},
author = {Cosimbescu, Lelia and Robinson, Joshua W. and Zhou, Yan and Qu, Jun},
abstractNote = {Star-shaped poly(alkyl methacrylate)s (PAMAs) with a three arm architecturewere designed, prepared and their performance as a dual additive (viscosity index improver and friction modifier) for engine oils was evaluated. Furthermore, the structure property relationships between the macromolecular structure and lubricant performance were studied, such as molecular weight and polarity effects on the viscosity index. Several copolymers of dodecylmethacrylate with polar methacrylates in various amounts and various topologies, were synthesized as model compounds. Star polymers with a polar content of at least 10% in a block or tapered block topology effectively reduced the friction coefficient in both mixed and boundary lubrication regimes. Furthermore, a polar content of 20% was efficient in reducing friction in both random and block topologies.},
doi = {10.1039/C6RA17461B},
journal = {RSC Advances},
number = 89,
volume = 6,
place = {United States},
year = {Mon Sep 12 00:00:00 EDT 2016},
month = {Mon Sep 12 00:00:00 EDT 2016}
}
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Works referencing / citing this record:
A New Approach for the Synthesis of Miktoarm Star Polymers Through a Combination of Thiol–Epoxy “Click” Chemistry and ATRP/Ring‐Opening Polymerization Techniques
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Star‐shaped siloxane polymers with various cyclic cores: Synthesis and properties
journal, April 2019
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