Interrelationships of Pressure-Dependent Hole Fraction and Elongational Viscosity in Polymer Melts

Table 2

Values of parameters of (7) evaluated for η₀ at zero level of elongational rate according to (5) and (6) in brackets.

Polymer							R^2
LDPE60	7.60 (8.02)	20372	65.35 (57.89)	0.13; (0.11)	0.0020 (0.0013)	1.41 (1.62)	0.99972 (0.99965)
LDPE65	7.53; (7.37)	20072	87.01; (92.81)	0.17; (0.18)	0.0021; (0.0024)	1.35; (1.58)	0.99966; (0.99953)
LLDPE	8.25 (8.39)	14672	55.33 (48.67)	0.15; (0.13)	0.0010 (0.00089)	1.45 (1.47)	0.99970 (0.99969)
HDPE	9.85 (9.66)	28772	126.93 (141.26)	0.21; (0.23)	0.00024 (0.00029)	1.81; (1.08)	0.99980 (0.99975)
PMMA	6.72; (6.82)	29072	358.19; (334.90)	0.53; (0.50)	0.0068 (0.0062)	1.81 (2.21)	0.99961; (0.99935)
PC	3.99; (4.52)	4022	560.31 (326.49)	3.83; (3.48)	0.0926; (0.0547)	1.62; (1.96)	0.99961; (0.99942)
PP	8.87 (8.39)	49112	95.51 (121.62)	0.090; (0.12)	0.00054; (0.00088)	2.08 (2.27)	0.99910 (0.99922)
PS	2.68; (2.35)	66572	390.21; (411.54)	-0.25; (-0.26)	0.306; (0.426)	3.32; (3.54)	0.99854 (0.99824)