Molecular interaction and viscometric behavior of mixtures of polyolefin and poly(styrene-co-dodecyl methacrylate-co-octadecyl methacrylate) rheology modifiers in solution of lubricating base oil (CROSBI ID 244511)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Jukić, Ante ; Faraguna, Fabio ; Franjić, Ivana ; Kuzmić, Sunčica
engleski
Molecular interaction and viscometric behavior of mixtures of polyolefin and poly(styrene-co-dodecyl methacrylate-co-octadecyl methacrylate) rheology modifiers in solution of lubricating base oil
Miscibility and rheological properties like kinematic viscosity at 40 °C and 100 °C, viscosity index, shear stability and pour point for solutions of polyolefin copolymer (OCP) and terpolymer poly(styrene-co-dodecyl methacrylate- co-octadecyl methacrylate) (PSAMA) in lubricating mineral oil are examined. Additives show complementary effect in which OCP increases solution viscosity while PSAMA increases viscosity index and lowers pour point. Repulsive interactions of OCP/PSAMA in oil solutions were determined by Krigbaum–Wall and Catsiff–Hewett models. Calculations employing the group contribution approach of Coleman, Graf and Painter confirmed immiscibility (Λ12 > 0, ΔGM > 0) of OCP/PSAMA blends. The obtained results give the prospects for lubricant formulations with mixed polymeric additives as well as for lubricant handling in order to avoid separation of copolymers in solution. © 2017 The Korean Society of Industrial and Engineering Chemistry
lubricating oils ; molecular interaction ; polymer additives ; viscosity
Glavni autori: Fabio Faraguna i Ante Jukić
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Podaci o izdanju
56
2017.
270-276
objavljeno
1226-086X
1876-794X
10.1016/j.jiec.2017.07.019
Povezanost rada
Kemija, Kemijsko inženjerstvo, Temeljne tehničke znanosti