Antiwear and antioxidant studies of cardanol phosphate ester additives
AUTOR(ES)
Mazzetto, S. E., Oliveira, L. D. M., Lomonaco, D., Veloso, P. A.
FONTE
Braz. J. Chem. Eng.
DATA DE PUBLICAÇÃO
2012-09
RESUMO
In the search for new applications and products derived from Cashew Nut Shell Liquid (CNSL), we report herein the synthesis and characterization (GC/MS and ¹H, 13C, and 31P NMR) of four phosphate esters derived from hydrogenated cardanol, including their applications as antiwear additives for diesel (S500) and as antioxidant additives for mineral oils, evaluated through the HFRR test and oxidative stability analyses, respectively. The results obtained showed very good to excellent performances promoted by the bio-additives evaluated, especially for the thiophosphorylated derivative, which notably reduced the sludge residue and the acidity index of the oxidized oil (0.52 mg NaOH/g sample) and also improved the diesel lubricity, reducing the wear of metal parts by more than 50% (330 μm).
Documentos Relacionados
- Synthesis and Antioxidant and Antimicrobial Properties of β-Hydroxy Sulfides, Sulfoxides, and Sulfones Derived from Cardanol and Glycerol Derivatives
- Cardanol e Eugenol Modificados Uso Como Antioxidante no Controle do Processo Oxidativo do Biodiesel de Algodão
- Synthesis, Antioxidant Activity, Acetylcholinesterase Inhibition and Quantum Studies of Thiosemicarbazones
- On the mechanism of action of ribonuclease A: relevance of enzymatic studies with a p-nitrophenylphosphate ester and a thiophosphate ester.
- Antioxidant and cytotoxic studies for kaempferol, quercetin and isoquercitrin