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THE INFLUENCE OF SMALL COMPOSITIONAL AND STRUCTURAL DIFFERENCES IN ETHYLENE/PROPYLENE COPOLYMERS AS A LUBRICATING OIL RHEOLOGY MODIFIERON THEIR SOLUTION VISCOMETRIC BEHAVIOR

Ivana Šoljić Jerbić ; University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, Croatia
Tomislav Penović ; University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, Croatia
Elvira Vidović ; University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, Croatia
Ante Jukić ; University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, Croatia

Puni tekst: engleski, pdf (2 MB) str. 231-251 preuzimanja: 542* citiraj
APA 6th Edition
Šoljić Jerbić, I., Penović, T., Vidović, E. i Jukić, A. (2013). THE INFLUENCE OF SMALL COMPOSITIONAL AND STRUCTURAL DIFFERENCES IN ETHYLENE/PROPYLENE COPOLYMERS AS A LUBRICATING OIL RHEOLOGY MODIFIERON THEIR SOLUTION VISCOMETRIC BEHAVIOR. Goriva i maziva, 52 (3), 231-251. Preuzeto s https://hrcak.srce.hr/110664
MLA 8th Edition
Šoljić Jerbić, Ivana, et al. "THE INFLUENCE OF SMALL COMPOSITIONAL AND STRUCTURAL DIFFERENCES IN ETHYLENE/PROPYLENE COPOLYMERS AS A LUBRICATING OIL RHEOLOGY MODIFIERON THEIR SOLUTION VISCOMETRIC BEHAVIOR." Goriva i maziva, vol. 52, br. 3, 2013, str. 231-251. https://hrcak.srce.hr/110664. Citirano 26.10.2020.
Chicago 17th Edition
Šoljić Jerbić, Ivana, Tomislav Penović, Elvira Vidović i Ante Jukić. "THE INFLUENCE OF SMALL COMPOSITIONAL AND STRUCTURAL DIFFERENCES IN ETHYLENE/PROPYLENE COPOLYMERS AS A LUBRICATING OIL RHEOLOGY MODIFIERON THEIR SOLUTION VISCOMETRIC BEHAVIOR." Goriva i maziva 52, br. 3 (2013): 231-251. https://hrcak.srce.hr/110664
Harvard
Šoljić Jerbić, I., et al. (2013). 'THE INFLUENCE OF SMALL COMPOSITIONAL AND STRUCTURAL DIFFERENCES IN ETHYLENE/PROPYLENE COPOLYMERS AS A LUBRICATING OIL RHEOLOGY MODIFIERON THEIR SOLUTION VISCOMETRIC BEHAVIOR', Goriva i maziva, 52(3), str. 231-251. Preuzeto s: https://hrcak.srce.hr/110664 (Datum pristupa: 26.10.2020.)
Vancouver
Šoljić Jerbić I, Penović T, Vidović E, Jukić A. THE INFLUENCE OF SMALL COMPOSITIONAL AND STRUCTURAL DIFFERENCES IN ETHYLENE/PROPYLENE COPOLYMERS AS A LUBRICATING OIL RHEOLOGY MODIFIERON THEIR SOLUTION VISCOMETRIC BEHAVIOR. Goriva i maziva [Internet]. 2013 [pristupljeno 26.10.2020.];52(3):231-251. Dostupno na: https://hrcak.srce.hr/110664
IEEE
I. Šoljić Jerbić, T. Penović, E. Vidović i A. Jukić, "THE INFLUENCE OF SMALL COMPOSITIONAL AND STRUCTURAL DIFFERENCES IN ETHYLENE/PROPYLENE COPOLYMERS AS A LUBRICATING OIL RHEOLOGY MODIFIERON THEIR SOLUTION VISCOMETRIC BEHAVIOR", Goriva i maziva, vol.52, br. 3, str. 231-251, 2013. [Online]. Dostupno na: https://hrcak.srce.hr/110664. [Citirano: 26.10.2020.]

Sažetak
The influence of the composition and structure of amorphous ethylene-propylene copolymer, EPC on viscometric behavior of mineral lubricating oils was examined and described. It is shown that even small differences in composition and structure of the same polymeric product, which are unavoidable consequence of the statistical nature of polymerization reactions, can display significant changes related to viscosity and thickening efficiency. Molecular weight of the additive has the most significant effect on viscosity since their very small increase causes a substantial increase in viscosity of olefin copolymer (OCP) solutions. Composition and distribution of comonomer sequences are important parameters, but do not show explicit nor linear effect on the solution viscosity. The interdependence of ethylene content, molecular weight and viscosity of additive solutions is expressed by an empirical function which is calculated using the Marquardt-Levenberg iterative algorithm. Understanding of the dependencies between the composition and structure together with the application characteristics is necessary for the formulation of lubricants and for achieving the optimal performance of a polymeric additive.

Ključne riječi
amorphous ethylene-propylene copolymer; composition; structure; viscosity; lubricant formulation

Hrčak ID: 110664

URI
https://hrcak.srce.hr/110664

Posjeta: 663 *