Experimental Study for Influence of Surfactants Chemical Microstructures on Wetting Effect about Coal Dust in Tongchuan Mining Area

Table 8

Nonlinear correlation analysis of surfactant functional groups and wettability.

Factor	Fitting formula	R^2
Ether group	Y = 50.14 – 46.35x + 9.15x^2	0.91375
-COO	Y = 89.48 – 243.5x + 145.7x^2	0.82253
Aromatic amine	Y = 10.92 + 123.68x − 101.67x^2	0.43282
Aromatic hydrocarbon	Y = 56.02 – 2.45x + 0.07x^2	0.34614