Interfacial and Micellization Behavior of Cetyltrimethylammonium Bromide (CTAB) in Water and Methanol-Water Mixture at 298.15 to 323.15 K

Table 1

Critical micelle concentration (cmc), maximum surface excess concentration (), area occupied by surfactant molecule (), surface pressure at the cmc (), packing parameters (), and free energy of adsorption ().

T (K)	Volume fractions of methanol	cmc (mM)
298.15	0.0	0.97	3.01	54.98	33.59	0.38	−63.40
	0.1	1.22	2.10	78.73	18.09	0.26	−57.01
	0.2	1.78	1.72	96.33	10.23	0.21	−51.46
	0.3	3.55	0.94	175.71	8.07	0.11	−47.32
	0.4	6.43	0.77	213.26	4.32	0.09	−39.02
308.15	0.0	1.14	2.83	58.49	32.91	0.36	−63.9
	0.1	1.42	1.82	91.14	18.07	0.23	−57.55
	0.2	1.88	1.55	107.07	11.50	0.19	−52.16
	0.3	4.45	0.76	217.96	8.75	0.09	−48.63
	0.4	7.34	0.62	267.33	5.06	0.07	−40.42
318.15	0.0	1.22	2.22	74.65	33.52	0.28	−64.22
	0.1	1.71	1.72	96.33	20.04	0.21	−57.93
	0.2	2.56	1.41	117.62	12.82	0.17	−52.54
	0.3	5.66	0.68	243.45	8.45	0.08	−47.07
	0.4	7.81	0.52	315.62	6.03	0.06	−41.60
323.15	0.0	1.32	2.17	76.39	33.79	0.27	−64.37
	0.1	1.91	1.60	103.78	21.87	0.20	−58.66
	0.2	2.73	1.22	136.08	14.05	0.15	−53.02
	0.3	5.89	0.57	288.61	9.29	0.07	−49.31
	0.4	7.32	0.43	382.66	6.89	0.05	−42.30