Effect of Different Nucleating Agents on the Crystallization of Ziegler-Natta Isotactic Polypropylene

Table 4

Crystallization temperature , Avrami’s constant , Avrami’s exponent , and crystallization half-life time for PP at different temperatures. In all cases, the nucleating agent concentration was 0.1 wt%.

Sample	[°C]			[min]
PP	115.0	2.58	0.17	1.7
	117.0	2.71	0.052	3.2
	120.0	2.61	0.002	8.2
	122.0	2.49	0.0018	10.5
PP-CNT	115.0	2.84	74.11	0.17
	120.0	2.74	37.19	0.32
	125.0	2.48	6.002	0.59
	127.0	2.58	0.606	0.82
PP-CNF	115.0	3.10	134.32	0.18
	120.0	2.98	48.0	0.41
	125.0	2.52	3.7	0.87
	127.0	2.65	1.79	1.39
PP-LiBe	120.0	2.76	13.82	0.52
	122.0	2.67	4.74	0.81
	125.0	2.74	0.67	1.49
	127.0	2.58	0.08	2.34
PP-Millad	118.0	3.47	19.45	0.40
	120.0	2.50	9.14	0.52
	125.0	1.93	1.15	2.52
	127.0	2.05	0.05	4.80