Prediction of thickening efficiency of olefin copolymers and kinematic viscosities of the blended base oils by determining intrinsic viscosities of the copolymers in cyclohexane

Negi, M.S.; Kumar, K. Naresh; Bhardwaj, Anil; Kapur, G. S.; Ramakumar, S.S.V.

doi:10.1016/j.ejpe.2022.02.003

Cited by 6 publications

(3 citation statements)

References 19 publications

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“…the different between the structure of A and C give increase in enthalpy due to increase the dodecyl acrylate ratio but Fig. (11). show DSC Analysis of prepared hyper branched polymer (E) it is endothermic peaks are observed, (T m ) is 151.43 °C and the enthalpy − 43.79 J/g.…”

Section: Differential Scanning Calorimetry (Dsc)mentioning

confidence: 96%

“…It has a low viscosity index if the viscosity of lubricating oil rapidly decreases when the temperature is raised. On the other hand, lubricating oil has a high viscosity index if temperature increases only marginally, impacts its viscosity [8][9][10][11]. Hyperbranched polymers are one-of-a-kind high branching density polymers, a significant quantity of terminal reactive units and nanosized repeated branched building blocks.…”

Section: Introductionmentioning

confidence: 99%

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Structural and viscosity studies of dendritic hyper branched polymer as viscosity index improvers

El-shazly,

Kamal,

Farag

2024

BMC Chemistry

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Star-like structural compounds were synthesized from different moles % of either dodecyl acrylate or triethylenetetramine using a one-pot commercial synthesis technique. The polymers that were created had various terminations. Fourier Transform Infrared (FTIR) spectroscopy and 1HNMR were used to verify the produced polymers’ chemical composition with different terminations. Furthermore, by analysis of Dynamic Light Scattering (DLS), the size and distribution of the synthesised branched polymers were evaluated. Using a Gel-permeation chromatograph, the modified hyperbranched polymer’s molecular weight, synthesized with various end points, were assessed. The unorganized structured prepared compounds with various molar feed ratios dodecyl acrylate: triethylenetetramine (DDA: TETA) was designed as A, B, C, D and E. Moreover, the synthesized additives function as viscosity index improvers (VII). As the concentration of polymeric additives increases, it leads to higher VI values. Similarly, with the increase in percentage of triethylenetetramine in the prepared hyperbranched polymers, the VI also increases. Notably, the most effective VI achieved is (E) = 212. It is noteworthy that all the synthesized hyperbranched polymers exhibited Newtonian behavior in the rheological study.

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Section: Differential Scanning Calorimetry (Dsc)mentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Structural and viscosity studies of dendritic hyper branched polymer as viscosity index improvers

El-shazly,

Kamal,

Farag

2024

BMC Chemistry

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show abstract

“…Among the polymer additives mixed in PAO-2 solvent used for industrial purposes, an ethylene-propylene co-polymer known as olefin co-polymer (OCP) is an important one [35]. The straight structural architecture and narrow molecular weight distribution of OCP make it a good thickener compared to other polymer chemistries [36]. OCP tends to behave differently based on the solvent it is dispersed in [37,38].…”

Section: Introductionmentioning

confidence: 99%