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Table 3 Surface energy and work of adhesion of fresh as well as ball milled fly ash

From: Preparation and Characterization of Nano structured Materials from Fly Ash: A Waste from Thermal Power Stations, by High Energy Ball Milling

Fly ash sample Surface energy (mJ/m2) Work of adhesion in water (mJ/m2) Work of adhesion in formamide (mJ/m2)
Polar dispersive
Fresh fly ash 10.85 8.373 74.045 64.86
Ball milled for 40 hours 9.705 13.188 78.398 72.595
Ball milled for 60 hours 0.8724 56.082 83.27 107.214