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

Table 4

Percentages of different functional groups in FTIR spectra of surfactants.

No.	Aliphatic hydrocarbon (%)	Aromatic hydrocarbon (%)	C-O-(%)	C=O (%)	Ether group (%)	-OH (%)	COO (%)	Aliphatic amine (%)	Aromatic amine (%)
1	59.3342	10.5399	9.8333	5.7475	4.8849	6.0026	0.2042	2.5728	0.8801
2	56.7262	30.5618	0	1.8192	0	1.3143	1.4762	7.8322	0.2698
3	60.1029	19.8547	3.5540	0	0.2249	7.7037	0.2466	7.7472	0.5656
4	47.7413	15.6685	0	2.6994	0.5950	32.3666	0.3203	0.4054	0.2034