Research Article
Interrelationships of Pressure-Dependent Hole Fraction and Elongational Viscosity in Polymer Melts
Table 4
Values of parameters of (
7) evaluated for
at different elongational stresses.
| | Polymer | σc (kPa) | | | | | | R2 |
| | LDPE60 | 500
800
1100
1400 | 7.27
6.74
6.57
6.54 | 69.62
83.59
87.59
87.68 | 0.136
0.163
0.1711
0.1713 | 0.0027
0.0046
0.0055
0.0057 | 1.31
1.56
1.57
1.45 | 0.99980
0.99969
0.99966
0.99971 |
| | LDPE65 | 350
500
800
1100 | 8.41
8.15
7.84
7.77 | 58.14
64.45
74.56
77.07 | 0.115
0.128
0.148
0.152 | 0.00086
0.0011
0.0015
0.0016 | 2.85
1.54
1.31
1.43 | 0.99846
0.99963
0.99975
0.99968 |
| | LLDPE | 800
1100
1400 | 8.15
7.46
6.24 | 70.54
84.85
112.06 | 0.189
0.23
0.30 | 0.0011
0.0022
0.0076 | 4.56
3.57
4.97 | 0.99725
0.99797
0.99642 |
| | HDPE | 500
800
1100
1400
1700
2000 | 9.89
9.25
8.83
8.53
8.30
8.11 | 33.07
53.52
62.72
67.19
69.22
69.84 | 0.0540
0.0874
0.102
0.110
0.113
0.12 | 0.00023
0.00044
0.00066
0.00089
0.0011
0.0014 | 1.15
0.59
0.70
0.61
0.47
0.59 | 0.99980
0.99992
0.99992
0.99994
0.99996
0.99995 |
| | PMMA | 1100
1400
1700 | -4.16
-2.89
-2.28 | 949.92
861.9
815.85 | 1.42
1.28
1.22 | 362.15
101.70
54.98 | 2.73
1.82
1.64 | 0.99840
0.99934
0.99960 |
| | PC | 500
800
1100
1400
1700
2000 | 1.93
1.49
1.18
0.96
0.77
0.62 | 510.04
536.48
554.40
567.97
578.90
588.04 | 5.42
5.71
5.90
6.04
6.16
6.25 | 0.729
1.136
1.535
1.927
2.314
2.698 | 2.40
2.78
3.32
3.76
4.30
4.76 | 0.99895
0.99859
0.99810
0.99759
0.99708
0.99659 |
| | PP | 350
500
800 | 7.99
6.37
5.33 | 55.21
137.53
170.44 | 0.052
0.13
0.161 | 0.0013
0.0066
0.0188 | 2.34
2.44
2.18 | 0.99885
0.99915
0.99940 |
| | PS | 500
800
1100
1400 | 2.93
1.37
0.89
0.77 | 354.33
427.57
448.55
452.19 | 0.226
0.27
0.285
0.287 | 0.237
1.128
1.82
2.068 | 2.70
2.34
1.98
1.93 | 0.99849
0.99896
0.99925
0.99935 |
|
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