Correlation of Polymerization Conditions with Thermal and Mechanical Properties of Polyethylenes Made with Ziegler-Natta Catalysts

Table 3

DSC analysis for polyethylene samples.

Sample			Temp.	Time			% crystallinity
	(bar)	(bar)	(°C)	(hour)	(°C)	(°C)	(Cooling)
1	5	0	60	0.5
2	5	0	60	1
3	5	0	80	0.5
4	5	0	80	1
5	5	2	60	0.5
6	5	2	60	1
7	5	2	80	0.5
8	5	2	80	1
9	5	5	60	0.5
10	5	5	60	1
11	5	5	80	0.5
12	5	5	80	1
13	10	0	60	0.5
14	10	0	60	1
15	10	0	80	0.5
16	10	0	80	1
17	10	2	60	0.5
18	10	2	60	1
19	10	2	80	0.5
20	10	2	80	1
21	10	5	60	0.5
22	10	5	60	1
23	10	5	80	0.5
24	10	5	80	1