Crystalline Characteristic Effect of In Situ Interaction between ZnO and Pht on Inducing β Nucleation of Isotactic Polypropylene

Table 3

Isothermal crystallization parameters of pure iPP and nucleated iPP.

Sample name	Tc (°C)	n	k (min^−n)	t1/2 (min)	R^2
Pure iPP	128	2.9	0.05	2.5	0.994
	129	2.6	0.03	3.4	0.997
	130	2.6	0.01	4.8	0.996
	131	2.5	0.007	6.4	0.994
	132	2.4	0.004	9.2	0.992
ZnO(S)/Pht/iPP	128	2.8	0.9	0.9	0.998
	129	2.7	0.5	1.2	0.998
	130	2.6	0.3	1.4	0.994
	131	2.7	0.1	1.9	0.997
	132	2.5	0.05	2.4	0.992
ZnO(P)/Pht/iPP	128	2.6	2.0	0.6	0.998
	129	2.7	1.1	0.8	0.999
	130	2.7	0.6	1.1	0.999
	131	2.7	0.3	1.4	0.999
	132	2.8	0.1	1.9	0.999