Organically Modified Montmorillonite as Nanoreactor to Improve the Grafting Degree of Maleic Anhydride onto Polypropylene
Table 1
Compositions of all the trials carried out in this work and selected characteristics.
Trial no.
PP (g) : o-MMT/DCP (DCP) (g) : MAH (g)
MAH%-1
MAH%-4
Mn (kg/mol)
M (kg/mol)
Pure PP
—
62.1
252.0
0
PP/o-MMT = 40 : 1
—
—
—
System 1 (PP/DCP/MAH)
1
40 : (0.25) : 1
0.422
0.335
42.3
110.7
2
40 : (0.50) : 1
0.458
0.277
43.8
113.9
3
40 : (1.00) : 1
0.532
0.405
39.9
94.6
4
40 : (1.50) : 1
0.528
0.212
50.0
122.5
5
40 : (1.00) : 2
0.375
0.054
55.8
211.1
6
40 : (1.00) : 3
0.367
0.029
61.8
221.4
7
40 : (1.00) : 4
0.369
0.036
55.6
224.6
8
40 : (0.50) : 2
0.375
0.032
53.2
155.8
9
40 : (0.50) : 3
0.368
0.054
50.9
202.2
10
40 : (0.50) : 4
0.377
0.061
46.6
170.5
System 2 (PP/(o-MMT/DCP)/MAH)
11
40 : 0.50 : 1
0.471
0.378
47.2
113.1
12
40 : 1.00 : 1
0.510
0.349
42.2
118.7
13
40 : 2.00 : 1
0.599
0.576
36.2
93.7
14
40 : 3.00 : 1
0.578
0.533
38.0
98.3
15
40 : 2.00 : 2
0.494
0.454
46.3
135.1
16
40 : 2.00 : 3
0.438
0.266
41.1
128.3
17
40 : 2.00 : 4
0.399
0.137
51.5
194.0
18
40 : 1.00 : 2
0.394
0.137
55.7
189.1
19
40 : 1.00 : 3
0.399
0.119
55.3
162.4
20
40 : 1.00 : 4
0.382
0.079
49.9
187.9
System 3 (PP/o-MMT/DCP/MAH)
21
40 : 1: 1 : 3
0.412
0.036
—
—
MAH%-1: MAH content measured out by titration after one time washing; MAH%-4: MAH content measured out by titration after four times washing; o-MMT was not pretreated with acetone and ultrasound.
