Open AccessComparative Study of Methods of Chemical Modification of Dehydrated Castor oil for Synthesis of Biolubricant
Author(s) -
S. Rajwani,
Praveen Kumar Yadav
Publication year - 2021
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2021.23128
Subject(s) - chemistry , transesterification , organic chemistry , castor oil , chemical modification , vegetable oil , environmentally friendly , thermal stability , viscosity index , pour point , viscosity , cloud point , pulp and paper industry , chemical engineering , polymer chemistry , materials science , extraction (chemistry) , base oil , methanol , composite material , scanning electron microscope , ecology , biology , engineering
Vegetable oil blends are the emerging alternative feedstocks, which are being used to synthesizeenvironment friendly lubricants. This work focuses on the Comparison of the methods of chemicalmodification, which are used for the biolubricant synthesis and also compares the resultant behaviourcharacterized on their thermal stability and viscosity. The biolubricant products are synthesized usingtwo chemical modification methods. Method 1: Epoxidation of vegetable oil followed bytransesterification of epoxidized oil. Method 2: Preparation of methyl esters (Transesterification)followed by epoxidation of methyl esters. Biolubricant derived from method 1 shows better thermalstability (Tonset = 338 ºC) compared to method 2 (Tonset = 205 ºC). The viscosity indices and pour pointvalues of the products were found to be 222; 4.6 ºC and 216; 6.0 ºC, respectively. Thus, the biolubricantderived from first method showed better physio-chemical properties and were comparable and a blendof non edible oil and waste cooking oil acts as potential basestock for biolubricant synthesis.