Rios, Italo C.; Cordeiro, Joao P.; Arruda, Tathilene B. M. G.; Rodrigues, F. Eduardo A.; Uchoa, Antonia F. J.; Luna, F. Murilo T.; Cavalcante, Celio L. Jr; Ricardo, Nagila M. P. S. published the artcile< Chemical modification of castor oil fatty acids (Ricinus communis) for biolubricant applications: An alternative for Brazil's green market>, Electric Literature of 104-76-7, the main research area is Ricinus castor oil fatty toluenesulfonic acid biolubricant.
Plants oils have been increasingly gaining acceptance in world markets, due to their great potential as raw material to replace conventional mineral oils for formulation of lubricants. In this study, samples of new potential bio-based lubricant mols. were synthesized from castor oil fatty acids. The synthesis occurred in three steps: esterification with 2-ethyl-1-hexanol, epoxidation and opening of oxirane rings with different nucleophilic agents: 1-butanol (BIOBUT) and water (BIOWAT). The main objective was to study the influence of hydroxyl groups and branching level on physicochem. properties and thermal degradation of samples. The products obtained in each step were characterized by 1H NMR and their physicochem. properties. The results indicated that the less polar samples (BIOBUT) exhibited a better low-temperature performance (PP -48°C). Furthermore, BIOBUT has superior oxidation stability (IP 4.22 h) compared to BIOWAT (IP 3.27 h). However, the BIOWAT showed a higher viscosity values (> 470 mm2/s at 40°C). Thermogravimetric analyses have indicated that BIOWAT shows better thermal stability. Finally, the activation energy determined for the first thermal event for BIOWAT (151 kJ.mol-1) was higher than BIOBUT.
Industrial Crops and Products published new progress about Activation energy. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Electric Literature of 104-76-7.
Referemce:
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Alcohols – Chemistry LibreTexts