Wettability Investigation of UV/O₃ and Acid Functionalized MWCNT and MWCNT/PMMA Nanocomposites by Contact Angle Measurement

Table 4

Surface energy calculation of treated MWCNT/PMMA nanocomposites using GvOC model.

Sample	(mJ/m^2)	(mJ/m^2)	(mJ/m^2)	(mJ/m^2)	(mJ/m^2)
Raw CNT	11.33	10.15	1.18	1.86	0.19
UV/O3 30 min	22.72	20.79	1.93	0.45	2.07
UV/O3 60 min	136.26	116.00	120.26	11.31	77.77
UV/O3 120 min	146.93	2.75	4.17	0.99	4.39
Acid 6 hours	12.45	5.30	7.15	1.66	7.69
Acid 12 hours	18.80	7.66	11.14	2.68	11.58
Acid 24 hours	24.82	11.54	13.28	3.50	12.59