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Table 6 The tribological properties of the samples in the four-ball test

From: Biolubricant basestocks from chemically modified plant oils: ricinoleic acid based-tetraesters

Samples Four ball wear scar diameter (WSD), 40 daN, 1 h (mm) Coefficient of friction (μ)
2, ERA 1.14 0.75
3, OHSOA 0.91 0.69
4, TSOA 0.78 0.57
5, EHOTT 0.62 0.44
  1. ERA epoxidized ricinoleic acid, DHSOA 10,12-dihydroxy-9-(stearoyloxy) octadecanoic acid, TSOA 9,10,12-tris(stearoyloxy) octadecanoic acid, EHOTT 18-(4-ethylhexyloxy)-18-oxooctadecane-7,9,10-triyl tristearate.