Table 4.

Adsorption isotherm model parameters of spandex dyed with neutral red G.

Type of Spandex and Temperature		Langmuir Mode			Freundlich Mode
		Qf	b	R2	Qf	n	R2
		(g/kg Spandex)	(g/L)−1		(g/kg Spandex)
Dyeable spandex	80 °C	110.65813	75.01575	0.99217	1.00908	3.22252	0.93426
	90 °C	99.23536	159.1314	0.95485	1.01013	3.41012	0.94745
	100 °C	121.26476	91.65565	0.98768	1.00828	3.96926	0.96991
Ordinary spandex	80 °C	20.25685	27.2557	0.84311	1.0506	3.30582	0.94147
	90 °C	22.07199	33.92804	0.90125	1.04635	4.32015	0.9974
	100 °C	25.6401	78.26255	0.92051	1.03977	2.67926	0.99896