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Tribology Letters
Erschienen in: Tribology Letters 1/2018

01.03.2018 | Original Paper

Thickening Mechanisms of Polyisobutylene in Polyalphaolefin

verfasst von: Michelle Len, Uma Shantini Ramasamy, Seth Lichter, Ashlie Martini

Erschienen in: Tribology Letters | Ausgabe 1/2018

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Abstract

Molecular dynamics simulations are used to study the effect of polyisobutylene polymer on the viscosity of polyalphaolefin base oil. The Newtonian viscosities of the solution calculated from simulations at 40 and 100 °C agree with rheometer measurements. The simulations are used to investigate three possible mechanisms by which the polymer may increase solution viscosity. The results indicate that neither (1) coil expansion nor (2) polymer–polymer association underlie viscosity enhancement in the case studied here. Measurements of solvent reorientation close to the additive molecule suggest that (3) modification of the solvent by the additive molecule contributes to viscosity enhancement.
Vorheriger Artikel Thermal Desorption Analysis of Hydrogen in Non-hydrogen-Charged Rolling Contact Fatigue-Tested 100Cr6 Steel
Nächster Artikel 3D Measurements of Lubricant and Surface Temperatures Within an Elastohydrodynamic Contact

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Metadaten
Titel
Thickening Mechanisms of Polyisobutylene in Polyalphaolefin
verfasst von
Michelle Len
Uma Shantini Ramasamy
Seth Lichter
Ashlie Martini
Publikationsdatum
01.03.2018
Verlag
Springer US
Erschienen in
Tribology Letters / Ausgabe 1/2018
Print ISSN: 1023-8883
Elektronische ISSN: 1573-2711
DOI
https://doi.org/10.1007/s11249-017-0960-3

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