Melt elasticity of polyolefins: Impact of elastic properties on foam processing

Polymeric Foams: Mechanisms and Materials

Volumn , Issue , 2004, Pages 19-72

  Yamaguchi, M ^a  

^a TOSOH CORPORATION   (Japan)

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EID: 84995401107     PISSN: None     EISSN: None     Source Type: Book    
DOI: None     Document Type: Chapter

References (125)

1. Gendron, R. and Daigneault, L.E., Rheology of thermoplastic foam extrusion process, in Foam Extrusion, ed. S.T. Lee, CRC Press, Boca Raton, FL, 2000, chap 3.
2. Yamaguchi, M. and Abe, S., LLDPE/LDPE blends. I. Rheological, thermal, and mechanical properties, J. Appl. Polym. Sci., 74, 3153, 1999.
3. Abe, S. and Yamaguchi, M., Study on the foaming of crosslinked polyethylene, J. Appl. Polym. Sci., 79, 2146, 2001.
4. Ferry, J.D., Viscoelastic Properties of Polymers, 3rd ed., John Wiley & Sons, New York, 1980.
5. Doi, M. and Edwards, S.F., The Theory of Polymer Dynamics, Clarendon Press, Oxford, 1986.
6. Rouse, P.E., A theory of the linear viscoelastic properties of dilute solutions of coiling polymers, J. Chem. Phys., 21, 1272, 1953.
7. Mills, N.J., The rheological properties and molecular weight distribution of polydimethylsiloxane, Eur. Polym. J., 5, 675, 1969.
8. Mills, N.J. and Nevin, A., Oscillatory shear measurements on polystyrene melts in the terminal region, J. Polym. Sci., Part A-2, 9, 267, 1971.
9. Laun, H.M., Prediction of elastic strains of polymer melts in shear and elongation, J. Rheol., 30, 459, 1986.
10. Cox, W.P. and Merz, E.H., Correlation of dynamic and steady flow viscosities, J. Polym. Sci., 28, 619, 1958.
11. Pearson, D.S. et al., Flow-induced birefringence of concentrated polyisoprene solutions, J. Rheol., 33, 517, 1989.
12. Osaki, K., On the damping function of shear relaxation modulus for entangled polymers, Rheol. Acta, 32, 429, 1993.
13. Larson, R.G., A constitutive equation for polymer melts based on partially extending strand convection, J. Rheol., 28, 545, 1984.
14. Wagner, M.H. and Schaeffer, J., Nonlinear strain measures for general biaxial extension of polymer melts, J. Rheol., 36, 1, 1992.
15. Wagner, M.H., Bastian, H., Hachmann, P., Meissner, J., Kurzbeck, S., Münstedt, H., and Langouche, F. The strain-hardening behaviour of linear and long-chain-branched polyolefin melts in extensional flows, Rheol. Acta, 39, 97, 2000.
16. McLeish, T.C.B. and Larson, R.G., Molecular constitutive equations for a class of branched polymers. the pom-pom polymer, J. Rheol., 42, 81, 1998.
17. Inkson, N.J. and McLeish, T.C.B., Predicting low density polyethylene melt rheology in elongational and shear flows with “pom-pom” constitutive equations, J. Rheol., 43, 873, 1999.
18. Wagner, M.H., Yamaguchi, M., and Takahashi, M., Quantitative assessment of MSF theory for LDPE, J. Rheol., 47, 779, 2003.
19. Yamaguchi, M. and Takahashi, M., Rheological properties of low density polyethylenes produced by tubular and vessel processes, Polymer, 42, 8663, 2001.
20. Macosko, C.W., Rheology: Principles, Measurements, and Applications, Wiley, New York, 1994.
21. Wagner, W.H., Bernnat, A., and Schulze, V., The rheology of the rheotens test, J. Rheol., 42, 917, 1998.
22. Yamaguchi, M., Rheological properties of linear and crosslinked polymer blends: Relation between crosslink density and enhancement of elongational viscosity, J. Polym. Sci. Polym. Phys. Ed., 39, 228, 2001.
23. Tanner, R.I., Engineering Rheology, Oxford Science Publications, New York, 1985.
24. Meissner, J., Rheometer zur undersuchung der deformationsmechanischen eigenschaften von kunststoffe-schmelzen unter definierter zugbeanspruchung, Rheol. Acta, 8, 78, 1969.
25. Meissner, J., Development of a uniaxial extension of polymer melts, Trans. Soc. Rheol., 16, 405, 1972.
26. Larson, R.G., The Structure and Rheology of Complex Fluids, Oxford University Press, New York, 1999.
27. Ballman, R.I., Extensional flow of polystyrene melt, Rheol. Acta, 4, 137, 1965.
28. Chang, J.C. and Denn, M.M., An experimental study of isothermal melt spinning of a Newtonian and a viscoelastic liquid, J. Non-Newtonian Fluid Mech., 5, 39, 1979.
29. Jones, D.M., Walters, K., and Williams, P.R., On the extensional viscosity of mobile polymer solutions, Rheol. Acta, 26, 20, 1987.
30. Metzner, A.B. and Metzner, A.P., Stress levels in rapid extensional flows of polymeric fluids, Rheol. Acta, 9, 174, 1970.
31. Binding, D.M., An appropriate analysis for contraction and converging flows, J. Non-Newtonian Fluid Mech., 27, 173, 1988.
32. Trembly, B., Estimation of the elongational viscosity of polyethylene blends at high deformation rates, J. Non-Newtonian Fluid Mech., 33, 137, 1989.
33. Moan, M. and Maguer, A., Transient extensional viscosity of dilute flexible polymer solutions, J. Non-Newtonian Fluid Mech., 30, 343, 1988.
34. Meissner, J., Stephenson, S.E., Demarmels, A., and Portman, P., Multiaxial elongational flows of polymer melts-classification and experimental realization, J. Non-Newtonian Fluid Mech., 11, 221, 1982.
35. Chatraei, S., Macosko, C.W., and Winter, H.H., Lubricated squeezing flow: A new biaxial extensional rheometer, J. Rheol., 25, 433, 1981.
36. Khan, S.H. and Larson, R.G., Step planar extension of polymer melts using a lubricated channel, Rheol. Acta, 30, 1, 1991.
37. Winter, H.H., Macosko, C.W., and Bennett, K.E., Orthogonal stagnation flow: A framework for steady extensional flow experiments, Rheol. Acta, 18, 323, 1979.
38. Soskey, P.R. and Winter, H.H., Equibiaxial extension of two polymer melts: Polystyrene and low density polyethylene, J. Rheol., 29, 493, 1985.
39. Denson, C.D. and Gallo, R.J., Measurements on the biaxial extensional viscosity of bulk polymers: The inflation of a thin polymer sheet, Polym. Eng. Sci., 11, 174, 1971.
40. Denson, C.D. and Crady, D.L., Measurements on planar extensional viscosity of bulk polymers: Inflation of a thin, rectangular polymer sheet, J. Appl. Polym. Sci., 18, 1611, 1974.
41. Denson, C.D. and Hylton, D.L., A rheometer for measuring the viscoelastic response of polymer melts in arbitrary planar and biaxial extensional flow fields, Polym. Eng. Sci., 20, 535, 1980.
42. Watanabe, H., Viscoelasticity and dynamics of entangled polymers, Prog. Polym. Sci., 24, 1253, 1999.
43. Pearson, D.S. and Helfand, E., Viscoelastic properties of star-shaped polymers, Macromolecules, 17, 888, 1984.
44. Roovers, J. and Toporowski, P.M., Relaxation by constraint release in combs and star-combs, Macromolecules, 20, 2300, 1987.
45. Raju, V.R., Rachapudy, H., and Graessley, W.W., Properties of amorphous and crystallizable hydrocarbon polymers. Part 4: Melt rheology of linear and starbranched hydrogenated polybutadiene, J. Polym. Sci. Polym. Phys. Ed., 17, 1223, 1979.
46. Carella, J.M., Gotro, J.T., and Graessley, W.W., Thermorheological effects of long-chain branching in entangled polymer melts, Macromolecules, 19, 659, 1986.
47. Zimm, B.H. and Stockmayer, W.H., Dynamics of branched polymer molecules in dilute solution, J. Chem. Phys., 17, 1301, 1949.
48. Tackx, P. and Tacx, J.C.J.F., Chain architecture of LDPE as a function of molar mass using size exclusion chromatography and multi-angle laser light scattering, Polymer, 39, 3109, 1998.
49. Scheirs, S. and Kaminsky, W., eds., Metallocene-Based Polyolefins: Preparation, Properties, and Technology, Wiley, New York, 2000.
50. Lachtermacher, M.G. and Rudin, A., Reactive processing of LLDPEs in corotating intermeshing twin-screw extruder. 1. Effect of peroxide treatment on polymer molecular structure, J. Appl. Polym. Sci., 58, 2077, 1995.
51. Horii, F., Zhu, Q., and Kitamaru, R., Carbon-13 NMR study of radiation-induced crosslinking of linear polyethylene, Macromolecules, 23, 977, 1990.
52. Abe, S., personal communication, 2000.
53. Lai, S.Y., Wilson, J.R, Knight, G.W., Stevens, J.C., and Chum, P.W.S., Elastic substantially linear olefin polymers, U.S. Patent 5,272,236, 1993.
54. Vega, J.F., Santamaria, A., Munoz-Escalone, A., and Lafuente, P., Small-amplitude oscillatory shear flow measurements as a tool to detect very low amounts of long chain branching in polyethylenes, Macromolecules, 31, 3639, 1998.
55. Wadud, S.E.B. and Baird, D.G., Shear and extensional rheology of sparsely branched metallocene-catalyzed polyethylenes, J. Rheol., 44, 1151, 2000.
56. Malmberg, A., Kokko, E., Lehmus, P., Löfgren, B., and Seppälä, J. V., Longchain branched polyethene polymerized by metallocene catalysts Et[Ind]2ZrCl2/MAO and Et[IndH4]2ZrCl2/MAO, Macromolecules, 31, 8448, 1998.
57. Hogan, J.P., Levett, C.T., and Werkman, R.T., Melt elasticity in linear PE containing long branches, SPE. J., 23, 87, 1967.
58. Johnson, L.K., Killian, R.M., and Brookhart, M., New Pd(II)- and Ni(II)-based catalysts for polymerization of ethylene and α-olefins, J. Am. Chem. Soc., 117, 6414, 1995.
59. Johnson, L.K., Mecking, S., and Brookhart, M., Copolymerization of ethylene and propylene with functionalized vinyl monomers by Paradium (II) catalysts, J. Am. Chem. Soc., 118, 267, 1996.
60. Hauptman, E., Waymouth, R.M., and Ziller, J.W., Stereoblock polypropylene: Ligand effects on the stereospecificity of 2-arylindene Zirconocene catalysts, J. Am. Chem. Soc., 117, 11586, 1995.
61. Kojoh, S., Matsugi, T., Saito, J., Mitani, M., Fujita, T., and Kashiwa, N., New monodisperse ethylene-propylene copolymers and a block copolymer created by a titanium complex having fluorine-containing phenoxy-imine chelate ligands, Chem. Lett., 822, 2001.
62. Schmidt, G.F., Timmers, F.J., Knight, G.W., Lai, S., Nickias, P.N., Rosen, R.K., Stevens, J.C., and Wilson, D.R., Constrained geometry addition polymerization catalysts, processes for their preparation, precursors therefore, methods of use, and novel polymers formed therewith, Eur. Patent 0416815, 1991.
63. Yang, C.T. and Lee, S.T., Dimensional stability analysis of foams based on LDPE and ethylene-styrene interpolymer blends, SPE ANTEC, 1782, 2002.
64. Ankrah, S., Verdejo, R., and Mills, N.J., The mechanical properties of ESI/LDPE foam blends and sport applications, Cell. Polym., 21, 237, 2002.
65. Bradley, M.B. and Phillips, E.M., Novel polypropylenes for foaming on conventional equipment, Plast. Eng., 82, 1991.
66. Hingmann, R. and Marczinke, B.L., Shear and elongational flow properties of polypropylene melts, J. Rheol., 38, 573, 1994.
67. Sugimoto, S., Tanaka, T., Masubuchi, Y., Takimoto, J., and Koyama, K., Effect of chain structure on the melt rheology of modified polypropylene. J. Appl. Polym. Sci., 73, 1493, 1999.
68. Cheung, L.K., Park, C.B., and Behravesh, A.H., Effect of branched structure on the cell morphology of extruded polypropylene foams, SPE ANTEC, 1941, 1996.
69. Lagendijk, R.P., Hogt, A.H., Buijtenhuijs, A., and Gotsis, A.D., Peroxydicarbonate modification of polypropylene and extensional flow properties, Polymer, 42, 10035, 2001.
70. Howells, E.R. and Benbow, J.J., Flow defects in polymer melts, Trans. J. Plast. Inst., 30, 240, 1962.
71. Hanson, D.E., Shear modification of polythene, Polym. Eng. Sci., 9, 405, 1969.
72. Fujiki, T., Concept of secondary heterogeneous structure of long-chain branched polyethylene, J. Appl. Polym. Sci., 15, 47, 1971.
73. Rokudai, M., Influence of shearing history on the rheological properties and processability of branched polymers, part I, J. Appl. Polym. Sci., 23, 463, 1979.
74. Rokudai, M., Mihara, S., and Fujiki, T., Influence of shearing history on the rheological properties and processability of branched polymers, part II, J. Appl. Polym. Sci., 23, 3289, 1979.
75. Rokudai, M. and Fujiki, T., Influence of shearing history on the rheological properties and processability of branched polymers, part III, J. Appl. Polym. Sci., 23, 3295, 1979.
76. Münstedt, H., The influence of various deformation histories on elongational properties of low density polyethylene, Colloid Polym. Sci., 259, 966, 1981.
77. Stehling, F., Speed, C.S., and Westerman, L., Causes of haze of low-density polyethylene blown films, Macromolecules, 14, 698, 1981.
78. Maxwell, B. and Breckwoldt, A., Controlled shear modification of low-density polyethylene, J. Rheol., 25, 55, 1981.
79. Maxwell, B., Dormier, E.J., Smith, F.P., and Tong, P.P., Processing properties of highand low-density polyethylene and their blends, Polym. Eng. Sci., 22, 280, 1982.
80. Ritzau, G., Shear modification of polyolefins and its integration in polymer processing, Intern. Polym. Process., 1, 188, 1987.
81. Leblans, P.J.R. and Bastiaansen, C., Shear modification of low-density polyethylene: Its origin and its effect on the basic rheological functions of the melt, Macromolecules, 22, 3312, 1989.
82. Yamaguchi, M. and Gogos, C.G., Quantitative relation between shear history and rheological properties of LDPE, Adv. Polym. Technol., 20, 261, 2001.
83. Yamaguchi, M., Todd, D.B., and Gogos, C.G., Effect of processing history on rheological properties and processability of LDPE, Proceedings of the Annual Meeting of the Society of Polymer Processing, PPS-18, Guimaraes, Portugal, June 2002.
84. Yamaguchi, M., Todd, D.B., and Gogos, C.G., Rheological properties of LDPE processed by conventional processing machines, Adv. Polym. Technol., 22, 179, 2003.
85. White, J.L., Critique on flow patterns in polymer fluids at the entrance of a die and instabilities leading to extrudate distortion, Appl. Polym. Symp., 20, 155, 1973.
86. Yamaguchi, M., Flow instability in capillary extrusion of plasticized poly (vinyl chloride), J. Appl. Polym. Sci., 82, 1277, 2001.
87. Gaskell, R.E., The calendering of plastic materials, J. Appl. Mech., 17, 334, 1950.
88. Todd, D.B., Introduction to compounding, and APV systems, Plastics Compounding, Equipment and Processing, ed. D.B. Todd, Hanser, New York, 1998, chaps. 1 and 6.
89. Sakai, T., Intermeshing twin-screw extruders, Mixing and Compounding of Polymers, ed. I. Manas-Zloczower and Z. Tadmor, Hanser, New York, 1994, chap.
90. Andersen, P.G., Mixing practices in corotating twin-screw extruders, Mixing and Compounding of Polymers, ed. I. Manas-Zloczower and Z. Tadmor, Hanser, New York, 1994, chap. 20.
91. Anderson, P.G., The Warner and Pfleiderer twinscrew corotating extruder system, Plastics Compounding, Equipment and Processing, ed. D.B. Todd, Hanser, New York, 1998, chap. 4.
92. Cheng, H. and Manas-Zloczower, I., Chaotic features of flow in polymer processing equipment, relevance to distributive mixing, Intern. Polym. Process., 12, 83, 1997.
93. Shikata, T. and Pearson, D.S., Viscoelastic behavior of concentrated spherical suspension, J. Rheol., 38, 601, 1994.
94. Mewis, J. and Metzner, A.B., The rheological properties of suspensions of fibres in Newtonian fluids subjected to extensional deformations, J. Fluid Mech., 62, 249, 1974.
95. Laun, H.M., Orientation effects and rheology of short glass fiber-reinforced thermoplastics, Colloid Polym. Sci., 262, 257, 1984.
96. Chan, Y., White, J.L., and Oyanagi, Y., A fundamental study of the rheological properties of glass-fiber-reinforced polyethylene and polystyrene melts, J. Rheol., 22, 507, 1978.
97. Lin, L., Viscoelastic properties of particle-filled polymers in the molten state, Ph.D. thesis, Kyoto University, Kyoto, 1989.
98. Taylor, G.I., The formation of emulsions in definable fields of flow, Proc. R. Soc. A, 146, 501, 1934.
99. Palierne, J.F., Linear rheology of viscoelastic emulsions with interfacial tension, Rheol. Acta, 29, 204, 1990.
100. Doi, M. and Ohta, T., Dynamics and rheology of complex interfaces I, J. Chem. Phys., 95, 1242, 1991.
101. Santamaria, A. and White, J.L., Rheological properties, shrinkage and melt spinning instability of blends of linear polyolefins with low density polyethylene, J. Appl. Polym. Sci., 31, 209, 1986.
102. Micic, P., Bhattacharya, S.N., and Field, G., Rheological behavior of LLDPE/LDPE blends under elongational deformation, Intern. Polym. Processing, 12, 110, 1997.
103. Transient elongational viscosity of LLDPE/LDPE blends and its relevance to bubble stability in the film blowing process, Polym. Eng. Sci., 38, 1685, 1998.
104. Lee, S.T. and Baker, J.J., Foam comprising polyolefin blend and method for producing same, U.S. Patent 6,096,793, 1998.
105. O’Brain, J.C. and Ehrenfreund, H.A., Synthetic cork-like material and method of making same, U.S. Patent 4,091,136, 1976.
106. Lee, S.T., Polyolefin/ionomer blend for improved properties in extruded foam products, U.S. Patent 6066393, 1998.
107. Lohse, D.J. and Graessley, W.W., Thermodynamics of polyolefin blends, Polymer Blends, ed. D.R. Paul and C.B. Bucknall, Wiley, New York, 1999, chap. 8.
108. Valenza, A., La Mantia, F.P., and Acierno, D., The rheological behavior of HDPE/LDPE blends. V. Isothermal elongation at constant stretching rate, J. Rheol., 30, 1085, 1986.
109. La Mantia, F.P., Valenza, A., and Acierno, D., Elongational behavior of low density/linear low density polyethylenes, Polym. Eng. Sci., 28, 90, 1988.
110. Münstedt, H., Dependence of the elongational behavior of melts on molecular weight and molecular weight distribution, J. Rheol., 24, 847, 1980.
111. Linster, J.J. and Meissner, J., Melt elongation and structure of linear polyethylene, Polym. Bull., 16, 187, 1986.
112. Dumoulin, M.M., Utracki, L.A., and Lara, J., Rheological and mechanical behavior of the UHMWPE/MDPE mixtures, Polym. Eng. Sci., 24, 117, 1984.
113. Yamaguchi, M. and Miyata, H., Strain hardening behavior in elongational viscosity for binary blends of linear polymer and crosslinked polymer, Polym. J., 32, 164, 2000.
114. Yamaguchi, M., Anomalous strain hardening behavior in elongational viscosity for blends of linear polymer and crosslinked polymer, SPE ANTEC, 1149, 2001.
115. Winter, H.H. and Chambon, F., Analysis of linear viscoelasticity of a crosslinking polymer at the gel point, J. Rheol., 30, 367, 1986.
116. Yamaguchi, M., Suzuki, K., and Maeda, S., Enhanced strain-hardening in elongational viscosity for HDPE/crosslinked HDPE blend: 1. Characteristics of crosslinked HDPE, J. Appl. Polym. Sci., 86, 73, 2002.
117. Zülle, B., Linster, J.J., Meissner, J., and Hürliman, H.P.., Deformation hardening and thinning in both elongational and shear of a low density polyethylene melt, J. Rheol., 31, 583, 1987.
118. Graham, R.S., McLeish, T.C.B., and Harlen, O.G., Using the pom-pom equations to analyze polymer melt in exponential shear, J. Rheol., 45, 275, 2001.
119. Yamaguchi, M. and Suzuki, K., Rheological properties and foam processability for blends of linear and crosslinked polyethylenes, J. Polym. Sci. Polym. Phys. Ed., 39, 2159, 2001.
120. Sebastian, D.H. and Dearborn, J.R., Elongation rheology of polyolefins and its relation to processability, Polym. Eng. Sci., 23, 572, 1983.
121. Fleissner, M., Elongational flow of HDPE samples and bubble instability in film blowing, Intern. Polym. Proc., 2, 229, 1988.
122. Shinohara, M., Uniaxial elongational viscosity of high molecular weight high density polyethylene melts, J. Soc. Rheol. Jpn., 19, 118, 1991.
123. Kanai, T., Dynamics, heat transfer, and structure development, Film Processing, ed. T. Kanai and G.A. Campbell, Hanser, New York, 1999, chap. 3.
124. Yamaguchi, M. and Suzuki, K., Enhanced strain-hardening in elongational viscosity for HDPE/crosslinked HDPE blend: 2. Processability of thermoforming, J. Appl. Polym. Sci., 86, 79, 2002.
125. Yamaguchi, M., Foaming of novel linear polyethylene with enhanced melt elasticity, Proceedings of the Annual Meeting of the Society of Polymer Processing, PPS-19, Melbourne, Australia, July 2003.