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In-Depth Information
Table 3.
Partial areas and melting peak temperatures of grafted LDPE at different radiation doses, using 30% DEM in the
solution as a function of self-seeding temperature (T
s
) and radiation dose.
T
s
Radiation Dose (kGy)
% Area
Melting Temperature (
8
C)
0
30
50
100
200
400
0
30
50
100
200
400
112
32.2
25.8
22.5
26.4
25.6
20.0
112
111
111
111
112
112
107
15.0
21.0
18.3
19.1
19.3
22.3
106
106
106
106
107
107
102
12.5
13.9
13.2
13.4
12.2
15.2
101
101
101
101
102
102
97
9.7
10.4
9.8
9.8
10.0
11.6
96
96
96
96
102
97
92
7.2
7.1
8.6
7.8
5.8
8.9
91
91
91
91
91
92
87
5.9
6.2
6.3
6.0
5.8
6.1
86
86
86
86
87
87
82
4.8
5.2
4.5
5.0
5.4
4.7
82
81
81
81
82
83
77
3.9
3.5
4.8
4.2
4.2
3.8
77
76
77
76
77
78
72
3.4
2.7
3.2
2.5
3.5
2.9
72
72
72
72
73
73
Figure 7.
SSA curves of neat LDPE irradiated at different absorbed doses.
the radiation dose and induced a significant
increase in average molecular-weights. The
insertion of DEM produced an interruption
of the more linear sequences, which means
that the functional monomer follows an
insertion mechanism onto the secondary
carbons.
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[5] M. Aglietto, R. Bertani, G. Ruggeri, F. Ciardelli,
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[6] C. Rosales, R. Perera, M. Ichazo, J. Gonzalez, H. Rojas,
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The authors acknowledge
FONACIT for its financial support
Acknowledgements:
J. Appl. Polym. Sci.
1998,
70
,
through
234.
Grant F-2000001365.
