Properties of Polystyrene Clay Nanocomposites Prepared Using Two New Imidazolium Surfactants

Table 2

Crossover frequencies and relaxation times of the PS and its nanocomposites at different temperatures (°C).

(°C)	PS		PS/MMT/C12		PS/MMT/C20		PS/MMT/C22
	(rad/s) [Hz]	Relax. time (s)	(rad/s) [Hz]	Relax. time (s)	(rad/s) [Hz]	Relax. time (s)	(rad/s) [Hz]	Relax. time (s)
190	20.3 []	0.31	22.9 []	0.27	5.9 []	1.07	1.0 []	6.54
200	40.4 []	0.16	44.2 []	0.14	11.1 []	0.56	1.7 []	3.74
210	92.3 []	0.07	73.5 []	0.09	13.9 []	0.45	7.61 []	0.83
220	115.4 []	0.05	75.4 []	0.09	35.8 []	0.18	12.6 []	0.50