Determination of method-invariant activation energies of long-chain branched low-density polyethylenes

Journal of Rheology

Volumn 53, Issue 4, 2009, Pages 1001-1016

  Keßner, Ute ^a   Kaschta, Joachim ^a   Münstedt, Helmut ^a  

^a UNIVERSITY OF ERLANGEN NUREMBERG   (Germany)

Author keywords

Activation energy; Low density polyethylene; Modulus shift; Steady state compliance; Thermorheological complexity

Indexed keywords

BRANCHING STRUCTURES; COMPLEX POLYMERS; FLOW ACTIVATION ENERGY; MODULUS SHIFT; RHEOLOGICAL PROPERTY; SHIFT FACTORS; STEADY-STATE COMPLIANCE; TEMPERATURE DEPENDENCE; THERMORHEOLOGICAL COMPLEXITY; TIME-TEMPERATURE SUPERPOSITION PRINCIPLES; VERTICAL SHIFT;

LOW DENSITY POLYETHYLENES; RHEOLOGY; TEMPERATURE DISTRIBUTION; THERMOPLASTICS;

ACTIVATION ENERGY;

EID: 67651236660     PISSN: 01486055     EISSN: None     Source Type: Journal    
DOI: 10.1122/1.3124682     Document Type: Article

References (35)

1. Beer, F., G. Capaccio, and L. Rose, " High molecular weight tail and long-chain branching in SRM 1476 polyethylene.," J. Appl. Polym. Sci. 0021-8995 73, 2807-2812 (1999). 10.1002/(SICI)1097-4628(19990929)73:14<2807:: AID-APP33.0.CO;2-E (Pubitemid 30517264)
2. Bersted, B. H., " On the effects of very low levels of long chain branching on rheological behavior in polyethylene.," J. Appl. Polym. Sci. 0021-8995 30, 3751-3765 (1985). 10.1002/app.1985.070300916
3. Bonchev, D., A. H. Dekmezian, E. Markel, and A. Faldi, " Topology-rheology regression models for monodisperse linear and branched polyethylenes.," J. Appl. Polym. Sci. 0021-8995 90, 2648-2656 (2003). 10.1002/app.12906 (Pubitemid 37354547)
4. Carella, J. M., and W. W. Graessley, " Effects of chain microstructure on the viscoelastic properties of linear polymer melts: Polybutadienes and hydrogenated polybutadienes.," Macromolecules 0024-9297 17, 2775-2786 (1984). 10.1021/ma00142a059
5. Carella, J. M., J. T. Gotro, and W. W. Graessley, " Thermorheological effects of long-chain branching in entangled polymer melts.," Macromolecules 0024-9297 19, 659-667 (1986). 10.1021/ma00157a031
6. Ferry, J. D., " Mechanical properties of substances of high molecular weight. VI. Dispersion in concentrated polymer solutions and its dependence on temperature and concentration.," J. Am. Chem. Soc. 0002-7863 72, 3746-3752 (1950). 10.1021/ja01164a117
7. Ferry, J. D., Viscoelastic Properties of Polymers, 3rd ed. (Wiley, New York, 1980).
8. Frater, D. J., J. W. Mays, and C. Jackson, " Synthesis and dilute solution properties of divinylbenzene-linked polystyrene stars with mixed arms lengths: Evidence for coupled stars.," J. Polym. Sci., Part B: Polym. Phys. 0887-6266 35, 141-151 (1997). 10.1002/(SICI)1099-0488(19970115)35:1<141:: AID-POLB123.0.CO;2-D (Pubitemid 127617589)
9. Gabriel, C., J. Kaschta, and H. Münstedt, " Influence of molecular structure on rheological properties of polyethylenes. I. Creep recovery measurements in shear.," Rheol. Acta 0035-4511 37, 7-20 (1998). 10.1007/s003970050086
10. Gabriel, C., and H. Münstedt, " Creep recovery behavior of metallocene linear low-density polyethylenes.," Rheol. Acta 0035-4511 38, 393-403 (1999). 10.1007/s003970050190
11. Jaćović, M. S., D. Pollock, and R. S. Porter, " A rheological study of long branching in polyethylene by blending.," J. Appl. Polym. Sci. 0021-8995 23, 517-527 (1979). 10.1002/app.1979.070230222 (Pubitemid 9412658)
12. Laun, H. M., " Orientation of macromolecules and elastic deformations in polymer melts. Influence of molecular structure on the reptation of molecules.," Prog. Colloid Polym. Sci. 0340-255X 75, 111-139 (1987). 10.1007/BF01188364
13. Mavridis, H., and R. N. Shroff, " Temperature dependence of polyolefin melt rheology.," Polym. Eng. Sci. 0032-3888 32, 1778-1791 (1992). 10.1002/pen.760322307
14. Meiner, J., Proceedings of the 4th International Congress on Rheology (Interscience, New York, 1987), Part 3, p. 437.
15. Münstedt, H., " The influence of various deformation histories on elongational properties of low density polyethylene.," Colloid Polym. Sci. 0303-402X 259, 966-972 (1981). 10.1007/BF01558607
16. Pedersen, S., and A. Ram, " Prediction of rheological properties of well-characterized branched polyethylenes from the distribution of molecular weight and long chain branches.," Polym. Eng. Sci. 0032-3888 18, 990-995 (1978). 10.1002/pen.760181303 (Pubitemid 9398220)
17. Peón, J., C. Domínguez, J. F. Vega, M. Aroca, and J. Martínez-Salazar, " Viscoelastic behaviour of metallocene-catalysed polyethylene and low density polyethylene blends: Use of the double reptation and Palierne viscoelastic models.," J. Mater. Sci. 0022-2461 38, 4757-4764 (2003). 10.1023/A:1027479119675
18. Podzimek, P., T. Vlcek, and C. Johann, " Characterization of branched polymers by size exclusion chromatography coupled with multiangle light scattering detector. I. Size exclusion chromatography elution behavior of branched Polymers.," J. Appl. Polym. Sci. 0021-8995 81, 1588-1594 (2001). 10.1002/app.1589 (Pubitemid 32609104)
19. Raju, V. R., G. G. Smith, G. Marin, J. R. Knox, and W. W. Graessley, " Properties of amorphous and crystallizable hydrocarbon polymers. I. Melt rheology of fractions of linear polyethylene.," J. Polym. Sci. 0022-3832 17, 183-1195 (1979).
20. Rokudai, M., and T. Fujiki, " Influence of shearing history on the rheological properties and processability of branched polymers. IV. Capillary flow and die swell of low-density polyethylene.," J. Appl. Polym. Sci. 0021-8995 26, 1343-1350 (1981). 10.1002/app.1981.070260425 (Pubitemid 12452653)
21. Rouse, P. E., " A theory of the linear viscoelastic properties of dilute solutions of coiling polymers.," J. Chem. Phys. 0021-9606 21, 1272-1280 (1953). 10.1063/1.1699180
22. Stadler, F. J., C. Gabriel, and H. Münstedt, " Influence of short-chain branching of polyethylenes on the temperature dependence of rheological properties in shear.," Macromol. Chem. Phys. 1022-1352 208, 2449-2454 (2007). 10.1002/macp.200700267 (Pubitemid 350195853)
23. Stadler, F. J., and H. Münstedt, " Terminal viscous and elastic properties of linear ethene/α-olefin copolymers.," J. Rheol. 0148-6055 52, 697-712 (2008a). 10.1122/1.2892039
24. Stadler, F. J., J. Kaschta, and H. Münstedt, " Thermorheological behavior of various long-chain branched polyethylenes.," Macromolecules 0024-9297 41, 1328-1333 (2008b). 10.1021/ma702367a
25. Shroff, R. N., and H. Mavridis, " Long-chain-branching index for essentially linear polyethylenes.," Macromolecules 0024-9297 32, 8454-8464 (1999). 10.1021/ma9909354
26. Starck, P., A. Malmberg, and B. Löfgren, " Thermal and rheological studies on the molecular composition and structure of metallocene- and Ziegler-Natta-catalyzed ethylene-α-olefin copolymers.," J. Appl. Polym. Sci. 0021-8995 83, 1140-1156 (2002). 10.1002/app.10152 (Pubitemid 34011357)
27. Takigawa, T., H. Kadoya, T. Miki, T. Yamamoto, and T. Masuda, " Dependence of zero-shear viscosity and steady-state compliance on molecular weight between entanglements for ethylene-cycloolefin copolymers.," Polymer 0032-3861 47, 4811-4815 (2006). 10.1016/j.polymer.2006.04.043
28. van Gurp, M., and J. Palmen, " Time-temperature superposition for polymeric blends.," Rheol. Bull. 0035-4538 67, 5-8 (1998).
29. Vega, J. F., and A. Santamaría, " Small-amplitude oscillatory shear flow measurements as a tool to detect very low amounts of long chain branching in polyethylenes.," Macromolecules 0024-9297 31, 3639-3647 (1998). 10.1021/ma9708961 (Pubitemid 128567771)
30. Vega, J. F., M. Fernández, A. Santamaría, A. Muoz-Escalona, and P. Lafuente, " Rheological criteria to characterize metallocene catalyzed polyethylenes.," Macromol. Chem. Phys. 1022-1352 200, 2257-2268 (1999). 10.1002/(SICI)1521-3935(19991001)200:10<2257::AID-MACP22573.0.CO;2-L (Pubitemid 129696339)
31. Verser, D. W., and B. Maxwell, " Temperature dependence of the properties of low-density polyethylene.," Polym. Eng. Sci. 0032-3888 10, 122-130 (1970). 10.1002/pen.760100210
32. Villar, M. A., M. D. Failla, R. Quijada, R. S. Mauler, E. M. Valĺs, G. B. Galland, and L. M. Qunizani, " Rheological charaterisation of molten ethylene-α-olefin copolymers synthesized with Et[Ind]2ZrCl2/MAO catalyst.," Polymer 0032-3861 42, 9269-9279 (2001). 10.1016/S0032-3861(01)00458-X
33. Wasserman, S. H., and W. W. Graessley, " Prediction of linear viscoelastic response for entangled polyolefin melts from molecular weight distribution.," Polym. Eng. Sci. 0032-3888 36, 852-861 (1996). 10.1002/pen.10472 (Pubitemid 126579678)
34. Wood-Adams, P., and S. Costeux, " Thermorheological behavior of polyethylene: Effects of microstructure and long chain branching.," Macromolecules 0024-9297 34, 6281-6290 (2001). 10.1021/ma0017034
35. Ye, Z., F. AlObaidi, S. Zhu, and R. Subramanian, " Long-chain branching and rheological properties of ethylene-1-hexene copolymers synthesized from ethylene stock by concurrent tandem catalysis.," Macromol. Chem. Phys. 1022-1352 206, 2096-2105 (2005). 10.1002/macp.200500248