of the exotherm in the cooling cycle. While the sample was heated from
À50
C to 180
C at a heating rate of 10
C/min, the melting endotherm was
recorded. T m was determined from the peak maximum of the second heating
cycle.
Table 2.6 Comonomer content, melting temperature T m , crystallization temperature from melt
T c (melt) (DSC), crystallization temperature from solution T c (sol) (CRYSTAF), molar masses and
molar mass dispersities (adopted from [110] with permission of Wiley-VCH)
Sample
Comonomer
Comonomer
(mol-%)
T m
(
C)
T c
(melt)
(
C)
T c
(sol)
(
C)
M w g=mol
ð
Þ
M w =M n
3.1
None
0
149.0
112.4
75.4
460,700
2.80
8.8
1-Octene
0.47
141.1
101.6
66.4
600,200
2.34
8.5
0.55
140.1
99.0
62.9
539,700
2.47
8.7
0.57
142.1
99.1
63.7
421,500
2.19
8.4
0.86
137.1
90.0
58.9
456,900
2.25
8.6
1.27
125.7
77.4
50.8
156,200
3.11
8.2
2.89
108.2
66.7
34.9
303,800
1.94
8.9
3.43
106.4
64.8
30
304,500
2.15
10.6
1-Decene
0.42
145.9
96.4
63.4
466,200
2.30
10.8
0.47
144.4
98.6
65.9
448,800
2.64
10.7
0.72
140.6
95.2
58.3
428,300
2.24
10.5
0.78
145.9
100.9
63.7
272,100
2.28
10.4
1.07
138.2
89.7
57.1
427,700
2.21
10.3
1.39
128.1
84.7
49
372,700
2.39
10.2
2.31
115.4
67.0
38.7
297,400
2.10
10.9
2.39
111.9
70.1
30
346,800
2.05
14.8
1-Tetradecene
0.26
144.1
98.2
65.8
282,700
2.29
14.7
0.5
143.2
96.2
59.4
240,700
2.14
14.4
0.63
142.3
93.2
57.7
572,300
2.23
14.5
0.68
136.3
91.9
55.2
553,500
2.54
14.6
0.77
144.3
94.4
60.1
369,700
2.35
14.3
0.89
130.8
89.7
51.5
639,200
2.51
14.1
1.05
126.5
81.7
47
413,200
2.15
14.10
2.33
114.5
66.9
34.5
415,500
2.15
14.2
2.76
108.4
64.3
30
395,100
2.31
18.6
1-Octadecene
0.47
143.3
101.5
61.4
279,700
2.21
18.8
0.51
142.1
106.3
62.9
223,700
2.44
18.4
0.66
139.1
94.3
59
764,300
2.20
18.5
0.81
137.8
88.9
55.5
486,200
2.27
18.10
1.09
131.4
86.9
50.6
494,600
2.05
18.9
1.49
127.4
86.4
45
307,700
2.02
18.11
1.89
122.8
81.5
38.7
442,000
1.99
18.2
2.04
124.5
–
41.2
380,500
1.95
2.2 Crystallization Analysis Fractionation
61