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Original scientific paper

VISCOSITY AND RHEOLOGICAL PROPERTIES OF MINERAL LUBRICATING OILS CONTAINING DISPERSIVE POLYMETHACRYLATE ADDITIVES

Ante Jukić ; Fakultet kemijskog inženjerstva i tehnologije, Sveučilište u Zagrebu

Fulltext: english, pdf (243 KB) pages 239-249 downloads: 2.698* cite
APA 6th Edition
Jukić, A. (2010). VISCOSITY AND RHEOLOGICAL PROPERTIES OF MINERAL LUBRICATING OILS CONTAINING DISPERSIVE POLYMETHACRYLATE ADDITIVES. Goriva i maziva, 49 (3), 239-249. Retrieved from https://hrcak.srce.hr/61888
MLA 8th Edition
Jukić, Ante. "VISCOSITY AND RHEOLOGICAL PROPERTIES OF MINERAL LUBRICATING OILS CONTAINING DISPERSIVE POLYMETHACRYLATE ADDITIVES." Goriva i maziva, vol. 49, no. 3, 2010, pp. 239-249. https://hrcak.srce.hr/61888. Accessed 7 Dec. 2021.
Chicago 17th Edition
Jukić, Ante. "VISCOSITY AND RHEOLOGICAL PROPERTIES OF MINERAL LUBRICATING OILS CONTAINING DISPERSIVE POLYMETHACRYLATE ADDITIVES." Goriva i maziva 49, no. 3 (2010): 239-249. https://hrcak.srce.hr/61888
Harvard
Jukić, A. (2010). 'VISCOSITY AND RHEOLOGICAL PROPERTIES OF MINERAL LUBRICATING OILS CONTAINING DISPERSIVE POLYMETHACRYLATE ADDITIVES', Goriva i maziva, 49(3), pp. 239-249. Available at: https://hrcak.srce.hr/61888 (Accessed 07 December 2021)
Vancouver
Jukić A. VISCOSITY AND RHEOLOGICAL PROPERTIES OF MINERAL LUBRICATING OILS CONTAINING DISPERSIVE POLYMETHACRYLATE ADDITIVES. Goriva i maziva [Internet]. 2010 [cited 2021 December 07];49(3):239-249. Available from: https://hrcak.srce.hr/61888
IEEE
A. Jukić, "VISCOSITY AND RHEOLOGICAL PROPERTIES OF MINERAL LUBRICATING OILS CONTAINING DISPERSIVE POLYMETHACRYLATE ADDITIVES", Goriva i maziva, vol.49, no. 3, pp. 239-249, 2010. [Online]. Available: https://hrcak.srce.hr/61888. [Accessed: 07 December 2021]
Fulltext: croatian, pdf (241 KB) pages 229-238 downloads: 890* cite
APA 6th Edition
Jukić, A. (2010). VISKOZNOST I REOLOŠKA SVOJSTVA MINERALNIH MAZIVIH ULJA S DISPERZANTNIM POLIMETAKRILATNIM ADITIVIMA. Goriva i maziva, 49 (3), 229-238. Retrieved from https://hrcak.srce.hr/61888
MLA 8th Edition
Jukić, Ante. "VISKOZNOST I REOLOŠKA SVOJSTVA MINERALNIH MAZIVIH ULJA S DISPERZANTNIM POLIMETAKRILATNIM ADITIVIMA." Goriva i maziva, vol. 49, no. 3, 2010, pp. 229-238. https://hrcak.srce.hr/61888. Accessed 7 Dec. 2021.
Chicago 17th Edition
Jukić, Ante. "VISKOZNOST I REOLOŠKA SVOJSTVA MINERALNIH MAZIVIH ULJA S DISPERZANTNIM POLIMETAKRILATNIM ADITIVIMA." Goriva i maziva 49, no. 3 (2010): 229-238. https://hrcak.srce.hr/61888
Harvard
Jukić, A. (2010). 'VISKOZNOST I REOLOŠKA SVOJSTVA MINERALNIH MAZIVIH ULJA S DISPERZANTNIM POLIMETAKRILATNIM ADITIVIMA', Goriva i maziva, 49(3), pp. 229-238. Available at: https://hrcak.srce.hr/61888 (Accessed 07 December 2021)
Vancouver
Jukić A. VISKOZNOST I REOLOŠKA SVOJSTVA MINERALNIH MAZIVIH ULJA S DISPERZANTNIM POLIMETAKRILATNIM ADITIVIMA. Goriva i maziva [Internet]. 2010 [cited 2021 December 07];49(3):229-238. Available from: https://hrcak.srce.hr/61888
IEEE
A. Jukić, "VISKOZNOST I REOLOŠKA SVOJSTVA MINERALNIH MAZIVIH ULJA S DISPERZANTNIM POLIMETAKRILATNIM ADITIVIMA", Goriva i maziva, vol.49, no. 3, pp. 229-238, 2010. [Online]. Available: https://hrcak.srce.hr/61888. [Accessed: 07 December 2021]

Abstracts
The viscometric and rheological behavior of solutions of the polymeric additives of lubricating oils that display dispersive properties was investigated. Additives are synthesized by radical copolymerization of styrene, dodecyl methacrylate, octadecyl methacrylate and dimethylaminoethyl methacrylate (DMAEMA, 2 and 4 mol. % share) in base mineral oil. All solutions of copolymers in basic oil displayed high values of kinematic viscosity and viscosity index (> 150). By embedding of DMAEMA into macromolecules the interactions between polymeric additives and oil change significantly. As a result, much larger hydrodynamic volume of polymeric molecules compared to the conventional methacrylate additives occurs. The viscosity increases due to the hydrodynamic volume increase, oppositely shear stability of solutions decreases while pour points are comparable. Relative, specific and reduced viscosities of diluted solutions of homopolymeric constituents of investigated additives: poly(alkyl methacrylate) (methyl-, PMMA; dodecyl-, PDDMA; octadecyl-, PODMA) and polystyrene (PS), as well as other most commonly used additives, ethylene-propylene (EPC) copolymes as well as styrene and hydrogenated butadiene (SHB) were determined, where following ranking was obtained: EPC ≥ SHB > PDMAEMA ≥ PS >> PDDMA > PMMA ≥ PODMA. Huggins’ equation describes concentration dependence of viscosity where limiting viscosity number and Huggins’ constants are determined as well. The obtained relationships between polymer composition and rheological properties of their solutions in oil, knowing of molecular interactions between polymers and solvents (base oil), enable formulating of lubricating oils of advanced application properties.

Keywords
Mineral lubricating oils; Viscosity; Rheological properties; Dispersant polymethacrylate additives

Hrčak ID: 61888

URI
https://hrcak.srce.hr/61888

[croatian]

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