A comparative assessment of performance behavior of mineral-based engine oils containing metal oxide nano-particles

Kumar, Ajay; Gupta, Tcsm; Shukla, Atindra D.

doi:10.1080/10916466.2022.2150213

Cited by 1 publication

(1 citation statement)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the last few decades, the demand for lubricants has grown in a variety of applications, such as automobiles, to smooth the movement of one surface over another [1][2][3] . One of the most important characteristics of lubricants is their superior resistance to viscosity changes with temperature [4,5] .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of butyl methacrylate/1-hexene copolymers catalyzed by AlCl3 and organometallic acids and their performance assessment in lube oil

Jalilian,

Jozaghkar,

Ziaee

2023

J. Polym. Sci. Eng.

View full text Add to dashboard Cite

In the present work, a series of butyl methacrylate/1-hexene copolymers were synthesized, and their efficiency as viscosity index improvers, pour point depressants, and shear stabilizers of lube oil was investigated. The effect of 1-hexene molar ratio, type, and concentration of Lewis acids on the incorporation of 1-hexene into the copolymer backbone was investigated. The successful synthesis of the copolymers was confirmed through FTIR and 1H NMR spectroscopy. Results obtained from quantitative 1H NMR and GPC revealed that an increase in the molar ratio of 1-hexene to butyl methacrylate, along with concentration of Lewis acids led to an increase in 1-hexene incorporation and a reduction in Mn and Ð. Similar trends were observed when the Lewis acid changed from AlCl3 to organometallic acids. The maximum 1-hexene incorporation (26.4%) was achieved for sample BHY3, with a [1-hexene/BMA] ratio of 4 mol% and a [Yb(OTf)3/BMA] ratio of 2.5 mol%. Evaluation of the synthesized copolymers as lube oil additives demonstrated that the viscosity index was more significantly influenced by samples with higher molecular weight. Sample BHA13 represents maximum VI of 137. The copolymer containing Yb(OTf)3 as a catalyst exhibited superior efficiency as a pour point depressant. Furthermore, sample BHY3 showed the lowest shear stability index (6.4).

show abstract