This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Detergent-Polymer Interactions in Hydrocarbon Solvents: A Viscometric Study
Annotation ability available
Sector:
Language:
English
Abstract
Two common internal combustion engine lubricant additives, overbased calcium sulfonate detergents and dispersant olefin copolymer (DOCP) viscosity index improvers, are shown to interact strongly, resulting in large (ca. 50%) increases in relative viscosity in hydrocarbon solutions. This viscosity increase is believed to result from bridging interactions from either physi- or chemisorption of DOCP functional groups onto the inorganic core of the sulfonate detergent colloid, with a resulting increase in effective polymer molecular weight. Viscometric properties of the detergent/DOCP interaction products, shear stability and the effect of competitive interactions with polyisobutenyl succinimide dispersant additives are described.
Recommended Content
Technical Paper | Interactions of Additives and Lubricating Base Oils |
Technical Paper | Rheological Characterization of Lubricant-Methanol-Water Emulsions |
Technical Paper | Investigation of Lubricating Oil Properties Effect on Low Speed Pre-Ignition |
Authors
Topic
Citation
Papke, B. and Rubin, I., "Detergent-Polymer Interactions in Hydrocarbon Solvents: A Viscometric Study," SAE Technical Paper 922281, 1992, https://doi.org/10.4271/922281.Also In
References
- Marsh, J. F. “Colloidal Lubricant Additives” Chem. Ind. 20 470 1987
- Markovic, I. Ottewill, R. H. Cebula, D. J. Field, I. Marsh, J. F. “Small Angle Neutron Scattering Studies on Non-aqueous Dispersions of CaC03” Colloid Poly. Sci. 262 648 1984
- Reading, K. Dilks, A. Graham, S. C. “Petroanalysis '87” Crump, G. B. John Wiley and Sons, Inc. New York 1988 239 251
- Tricaud, C. Hipeaux, J. C. Lemerle, J. “Micellar Structure of Alkaline Earth Metal Alkylarylsulfonates” Lub. Sci. 1 207 1989
- Spikes, H. A. “Additive-Additive and Additive-Surface Interactions in Lubrication” Lub. Sci. 2 3 1990
- Inoue, K. Watanabe, H. “Interactions of Engine Oil Additives” ASLE Trans. 26 189 1983
- Hsu, S. M. Pei, P. Ku, C. S. “Mechanisms of Additive Effectiveness” Lub. Sci. 1 165 1989
- Rounds, F. “Changes in Friction and Wear Performance Caused by Interactions Among Lubricant Additives” Lub. Sci. 1 333 1989
- Inoue, K. Watanabe, H. “Interactions Between Engine Oil Additives,” J. Japan Petrol. Inst. 24 101 1981
- Inoue, K. Watanabe, H. “Effects of Interactions Between Engine Oil Additives on Solubilization and Adsorption” J. Japan Petrol. Inst. 25 106 1982
- Papke, B. L. Bartley, L. S. Migdal, C. A. “Adsorption of Poly(isobutylene)succinimide Dispersants onto Calcium Alkylarylsulfonate Colloidal Dispersions in Hydrocarbon Media” Langmuir 7 2614 1991
- Tong, P. Witten, T. A. Huang, J. S. Fetters, L. J. “Interactions in Mixtures of Colloid and Polymer” J. Phys. France 51 2813 1990
- Tong, P. Cavalho, B. Huang, J. S. Witten T. A. Fetters, L. J. “The Adsorption of End-Functionalized Polymers on Colloidal Particles” 203rd National Meeting of the American Chemical Society San Francisco, CA April 1992
- Nalesnik, T. E. “Novel VI Improver, Dispersant, and Anti-oxidant Additive and Lubricating Oil Composition Containing Same” 1989
- Jao, T. C. Joyce, W. S. “Solubilization of Methanol by Calcium Alkylarylsulfonates in Hydrocarbon Media” Langmuir 6 944 1990
- Nalesnik, T. E. “Lubricating Oil Dispersant and Viton Seal Additives” 1987
- Kapuscinski, M. M. Sen., A. Rubin, I. D. “Solution Viscosity Studies on OCP VI Improvers in Oils” SAE No. 892152 1989
- Van Lent, B. Israels, R. Scheutjens, J. M. H. M. Fleer, G. J. “Interaction between Hairy Surfactants and the Effects of Free Polymer” J. Colloid Interface Sci. 137 380 1990
- Jones, A. Vincent, B. “Depletion Flocculation in Dispersions of Sterically-Stabilized Particles” Colloids and Surfaces 42 113 1989
- Papke, B. L. “Irreversible Asorption of Poly(isobutenyl)-succinimide Dispersant onto Calcium Alkylarylsulfonate Colloids” ACS Symposium Series