Effect of Polymerization Conditions on Thermal and Mechanical Properties of Ethylene/1-Butene Copolymer Made with Ziegler-Natta Catalysts

Table 4

Mechanical properties of ethylene/1-butene copolymer (polymerization time: 30 min).

s/number	𝑃C2H4; (bar)	1-Butene fraction (mmol/L)	Poly.; temp. (°C)	𝑃H2 (bar)	Modulus (MPa)	Yield stress (MPa)	Yield strain (%)	Strain at break (%)	TS (MPa)
1	5	71.3	60	1	419 ± 18	13.63 ± 1.13	3	669 ± 23	48.65 ± 4.48
2	5	71.3	60	2	514 ± 21	15.12 ± 1.25	3	756 ± 27	45.55 ± 3.56
3	5	71.3	60	3	591 ± 28	17.08 ± 1.32	3	817 ± 35	41.42 ± 3.24
4	5	71.3	80	1	445 ± 15	14.12 ± 1.21	4	686 ± 32	47.91 ± 4.25
5	5	71.3	80	2	544 ± 20	15.22 ± 1.27	3	790 ± 28	43.89 ± 3.96
6	5	71.3	80	3	615 ± 31	17.29 ± 1.31	3	845 ± 39	39.89 ± 3.47
7	5	142.6	60	1	437 ± 17	14.05 ± 1.12	4	678 ± 25	47.32 ± 4.14
8	5	142.6	60	2	536 ± 22	15.58 ± 1.18	4	771 ± 29	43.45 ± 3.82
9	5	142.6	60	3	620 ± 29	17.21 ± 1.24	4	823 ± 33	40.24 ± 3.32
10	5	142.6	80	1	499 ± 20	14.18 ± 1.14	4	698 ± 34	46.55 ± 4.06
11	5	142.6	80	2	565 ± 27	15.75 ± 1.19	4	785 ± 37	42.61 ± 3.75
12	5	142.6	80	3	648 ± 33	17.51 ± 1.25	3	842 ± 42	38.64 ± 3.26
13	10	71.3	60	1	458 ± 16	13.81 ± 1.11	3	687 ± 26	51.94 ± 4.57
14	10	71.3	60	2	535 ± 23	15.34 ± 1.22	3	784 ± 35	46.65 ± 4.12
15	10	71.3	60	3	634 ± 29	17.23 ± 1.29	3	843 ± 39	42.67 ± 3.35
16	10	71.3	80	1	472 ± 19	14.62 ± 1.13	3	702 ± 33	49.43 ± 4.36
17	10	71.3	80	2	575 ± 25	15.58 ± 1.20	3	798 ± 37	44.68 ± 3.94
18	10	71.3	80	3	682 ± 34	17.47 ± 1.26	3	856 ± 41	41.53 ± 3.28
19	10	142.6	60	1	481 ± 23	14.27 ± 1.15	3	698 ± 29	49.84 ± 4.19
20	10	142.6	60	2	554 ± 27	15.74 ± 1.23	4	812 ± 36	44.66 ± 3.86
21	10	142.6	60	3	665 ± 34	17.67 ± 1.31	3	876 ± 43	41.83 ± 3.42
22	10	142.6	80	1	512 ± 29	14.63 ± 1.17	3	718 ± 25	47.45 ± 4.14
23	10	142.6	80	2	589 ± 36	16.42 ± 1.28	3	828 ± 37	43.36 ± 3.68
24	10	142.6	80	3	712 ± 39	18.19 ± 1.33	3	896 ± 42	40.35 ± 3.16