Determination of Partition Coefficients of Selected Model Migrants between Polyethylene and Polypropylene and Nanocomposite Polypropylene

Table 8

Relation () / at 60°C and 80°C for all substances studied.

Model migrant	Temperature	Time		Model migrant	Temperature	Time
Benzophenone		40 days	2.47	DPP		40 days	6.70
	60°C	55 days	2.54		60°C	55 days	13.84
		70 days	2.55			70 days	8.53
		25 days	—			25 days	11.92
	80°C	40 days	2.15		80°C	40 days	11.35
		60 days	2.30			60 days	10.02
DPBD		40 days	5.69	BHT		40 days	0.93
	60°C	55 days	6.33		60°C	55 days	1.20
		70 days	5.50			70 days	1.02
		25 days	—			25 days	1.07
	80°C	40 days	4.82		80°C	40 days	0.85
		60 days	4.27			60 days	0.89
Uvitex OB		40 days	3.57	Bisphenol A		40 days	16.30
	60°C	55 days	1.31		60°C	55 days	15.54
		70 days	2.02			70 days	20.19
		25 days	—			25 days	—
	80°C	40 days	3.34		80°C	40 days	48.41
		60 days	2.09			60 days	54.19
ITX		40 days	2.42	Triclosan		40 days	16.41
	60°C	55 days	2.84		60°C	55 days	16.98
		70 days	2.44			70 days	23.01
		25 days	2.22			25 days	—
	80°C	40 days	1.77		80°C	40 days	18.28
		60 days	2.03			60 days	18.60