“Structural and viscosity studies of dendritic hyper branched viscosity index improvers in one pot step”

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Abstract 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 compounds expressed as viscosity index improver (VII); as the amount of combined additives in the mixture is concentrated in the solution, so does the VI. As the percentage of triethylenetetramine in prepared hyperbranched polymers increases, so does the VI. and the most effective VI is (E) VI = 212. All of the synthesized hyperbranched polymers have Newtonian rheological behavior as their rheological behavior.

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