Rheological properties and foaming behavior of polypropylenes with different molecular structures

Journal of Rheology

Volumn 50, Issue 6, 2006, Pages 907-923

  Stange, Jens ^a,b   Münstedt, Helmut ^a  

^a UNIVERSITY OF ERLANGEN NUREMBERG   (Germany)

^b Formerly Baver Material Science AG   (Germany)

Author keywords

Foming; High melt strength; Long chain branching; Polypropylene; Strain hardening

Indexed keywords

FOAMING; HIGH MELT STRENGTH; LONG-CHAIN BRANCHING;

MOLECULAR STRUCTURE; RHEOLOGY; SIZE EXCLUSION CHROMATOGRAPHY; STRAIN HARDENING; VISCOSITY;

POLYPROPYLENES;

EID: 33750897929     PISSN: 01486055     EISSN: None     Source Type: Journal    
DOI: 10.1122/1.2351880     Document Type: Article

References (37)

1. Auhl, D., J. Stange, H. Münstedt, B. Krause, D. Voigt, A. Lederer, U. Lappan, and K. Lunkwitz, " Rheological properties of electron beam irradiated polypropylenes., " Macromolecules 37, 9465-9472 (2004).
2. Gabriel, C., J. Kaschta, and H. Münstedt, " Influence of molecular structure on rheological properties of polyethylenes. Part I: Creep recovery measurements in shear., " Rheol. Acta 37, 7-20 (1998).
3. Gabriel, C. and H. Münstedt, " Influence of long-chain branches in polyethylenes on linear viscoelastic flow properties in shear., " Rheol. Acta 41, 232-244 (2002).
4. Gabriel, C. and H. Münstedt, " Strain hardening behavior of polyolefins in uniaxial flow., " J. Rheol. 47, 619-630 (2003).
5. Gendron, R. and L. Daigneault, "Rheology of thermoplastic foam extrusion process," in Foam Extrusion, edited by, S. T. Lee, (Technomic Publishing Company, Lancaster, Pennsylvania, 2002), pp. 35-80.
6. Gendron, R., Thermoplastic Foam Processing: Principles and Development (CRC Press, Boca Raton, Florida, 2005).
7. Hachmann, P. and J. Meissner, " Rheometer for equibiaxial and planar elongations of polymer melts., " J. Rheol. 47, 989-1010 (2003).
8. Hingmann, R. and B. Marczinke, " Shear and elongational flow properties of polypropylene melts., " J. Rheol. 38, 573-587 (1994).
9. Inkson, N. J., T. B. C. McLeish, O. G. Harlen, and D. J. Groves, " Predicting low density polyethylene melt rheology in elongational and shear flows with "Pom-Pom" constitutive equations., " J. Rheol. 43, 873-896 (1999).
10. Kropp, D., " Extrusion thermoplastischer Schäumen mit alternativen Treibmitteln., " Dissertation, RWTH Aachen, 1999.
11. Koyama, K. and M. Sugimoto, " Rheological properties and its processability of high-melt-strength polypropylene., " Proceedings of the XIIIth International Congress on Rheology, Cambridge 2000 (2000), 409-410.
12. Kurzbeck, S., " Dehnrheologische Eigenschaften von Polyolefinschmelzen und Korrelation mit ihrem Verarbeitungsverhalten beim Folienblasen und Thermoformen., " Dissertation, University Erlangen-Nuremberg, 1999.
13. Kurzbeck, S., F. Oster, H. Münstedt, T. Q. Ngyuen, and R. Gensler, " Rheological properties of two polypropylenes with different molecular structure., " J. Rheol. 43, 359-374 (1999).
14. Malkin, A. Y. and C. J. S. Petrie, " Some conditions for rupture of polymer liquids in extension., " J. Rheol. 41, 1-25 (1997).
15. Malmberg, A., C. Gabriel, T. Steffl, H. Münstedt, and B. Löfgren, " Long-chain branching in metallocene-catalyzed polyethylenes investigated by low oscillatory shear and uniaxial elongational rheometry., " Macromolecules 35, 1038-1048 (2002).
16. McKinley, G. H. and O. Hassager, " The Consid̀re condition and rapid stretching of linear and branched polymer melts., " J. Rheol. 43, 1195-1212 (1999).
17. McLeish, T. B. C. and R. G. Larson, " Equations for a class of branched polymers: The pom-pom polymer., " J. Rheol. 42, 81-110 (1998).
18. Michaeli, W., J. Lorenz, R. van Hoorn, and H. Schumacher, " Assessment of the foamability of polymers on the basis of their biaxial stress/strain behaviour., " Proceedings of the Blowing Agents and Foaming Processes 2004.
19. Münstedt, H., " Dependence of the elongational behaviour of polystyrene melts on molecular weight and molecular weight distribution., " J. Rheol. 24, 847-867 (1980).
20. Münstedt, H. " Polymerschmelzen., " in FlieΒverhalten von Stoffgemischen, edited by, W. Kulicke, (Huethig and Wepf Verlag, 1986), pp. 238-279.
21. Münstedt, H., S. Kurzbeck, and L. Egersdörfer, " Influence of molecular structure on rheological properties of polyethylenes; Part II: Elongational behavior., " Rheol. Acta 37, 21-29 (1998).
22. Münstedt, H., T. Steffl, and A. Malmberg, " Correlation between rheological behaviour in uniaxial elongation and film blowing properties of various polyethylenes., " Rheol. Acta 45, 14-22 (2005).
23. Münstedt, H. and J. Stange, "The role of rheology in foaming polymers," in Cellular Metals and Polymers, edited by, R. F. Singer, C. Körner, V. Altstädt, and, H. Münstedt, (Trans Tech Publications, Zurich, Switzerland, 2005), pp. 201-208.
24. Naguib, H. E., J. X. Xu, C. B. Park, A. Hesse, U. Panzer, and N. Reichelt, " Effects of blending of branched and linear polypropylene resins on foaming., " SPE, ANTEC, Technical Papers 47, 1623-1630 (2001).
25. Naguib, H. E., C. B. Park, J. Wang, A. K. Mukhopadhyay, and N. Reichelt, " Effect of recycling on the rheological properties and foaming behaviors of branched PP., " Cell. Polym. 22, 1-22 (2003).
26. Park, C. B. and N. P. Suh, " Rapid polymer/gas solution formation for continuous production of microcellular plastics., " J. Manuf. Sci. Eng. 118, 639-645 (1996).
27. Park, C. B. and L. K. Cheung, " A study of cell nucleation in the extrusion of polypropylene foams., " Polym. Eng. Sci. 37, 1-10 (1997).
28. Park, C. B., L. K. Cheung, and S.-W. Song, " The effect of talc on cell nucleation in extrusion foam processing of polypropylenes with CO2 and isopentane., " Cell. Polym. 17, 221-251 (1998).
29. Phillips, E. M., K. E. McHugh, K. Ogale, and M. B. Bradley, " Polypropylen mit hoher Schmelzestabilität-geeignet zum Tiefziehen, Extrusionsbeschichten und für die Schaumextrusion., " Kunststoffe 82, 671-676 (1992).
30. Spitael, P. and C. W. Macosko, " Strain hardening in polypropylene and its role in extrusion foaming., " Polym. Eng. Sci. 44, 2090-2100 (2004).
31. Stange, J., C. Uhl, and H. Münstedt, " Rheological behavior of blends from a linear and a long-chain branched polypropylene., " J. Rheol. 49, 1059-1079 (2005a).
32. Stange, J. and H. Münstedt, " Rheological properties and foaming behavior of blends of linear and long-chain branched polypropylenes., " Proceedings of the 21st Annual Meeting of the Polymer Processing Society, Leipzig (2005b).
33. Stange, J., " Einfluss rheologischer Eigenschaften auf das Schäumverhalten von Polypropylenen unterschiedlicher molekularer Struktur., " Dissertation, University Erlangen-Nuremberg, 2006.
34. Sugimoto, M., T. Tanaka, Y. Masubuchi, J-I. Takimoto, and K. Koyama, " Effect of chain structure on the melt rheology of modified polypropylene., " J. Appl. Polym. Sci. 73, 1493-1500 (1999).
35. Sugimoto, M., Y. Masubuchi, J. Takimoto, and K. Koyama, " Melt rheology of polypropylene containing small amounts of high-molecular-weight chains. 2. Uniaxial and biaxial extensional flow., " Macromolecules 34, 6056-6063 (2001).
36. Sun, S. F., " Physical Chemistry of Macromolecules: Basic Principles and Issues, " 2nd ed. (Wiley, New York, 2004).
37. Wood-Adams, P. M., J. M. Dealy, A. W. de Groot, and O. D. Redwine, " Effect of molecular structure on the linear viscoelastic behavior of polyethylene., " Macromolecules 33, 7489-7499 (2000).