A Simulation Study on the Swelling and Shrinking Behaviors of Nanosized Montmorillonite Based on Monte Carlo and Molecular Dynamics

Table 2

CEC of Na-Mnt.

Layer charge density (per half unit cell)	Type of layer charge	Number of Na^+	Water content (%)
			5	10	20	30	40	45	50	55	60	65	70
0.20	Low-level	3	49	47	43	40	37	35	34	33	32	31	30
0.38	Transition	6	97	93	85	79	73	70	68	65	63	61	60
0.60	High-level	10	160	153	140	130	121	119	112	108	105	101	99