A novel class of bio-lubricants are synthesized by epoxidation of 10-undecylenic acid-based esters

B.  Lakkoju; V.  Vemulapalli

doi:10.3989/gya.0103211

Authors

B. Lakkoju Department of Chemistry, GITAM Institute of Science, Gandhi Institute of Technology and Management (GITAM) https://orcid.org/0000-0002-7610-6827
V. Vemulapalli Department of Chemistry, GITAM Institute of Science, Gandhi Institute of Technology and Management (GITAM) https://orcid.org/0000-0002-0538-1119

DOI:

https://doi.org/10.3989/gya.0103211

Keywords:

2-ethyl hexyl epoxide, Biolubricants, Epoxidation, Esterification, NPG epoxide, TMP epoxide

Abstract

Mineral-based lubricants are being supplanted by bio-based lubricants because of environmental concerns and the depletion of fossil resources. The derivatives of edible and non-edible oils are considered potential alternatives to existing natural mineral oil base stocks in certain lubricant applications, where immediate intraction with the environment is predicted. A new class of epoxides were synthesized from the undecylenic esters of 2-ethyl hexanol, neopentyl glycol (NPG), and trimethylolpropane (TMP). These unsaturated esters were epoxidized by using meta chloro perbenzoic acid. The synthesized epoxides were characterized by spectral studies (¹HNMR, ¹³CNMR, IR) physio-chemical (density, specific gravity) and lubricant properties (kinematic viscosity, viscosity index, flash point, fire point, cloud point, pour point, copper strip corrosion). TMP epoxide has a high viscosity index, high flash point, and low pour point compared to 2-ethyl hexyl epoxide and NPG epoxide.

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