Crystallinity and melting temperature of polyethylene in the double creep zone

  • Ángel Manzur Universidad Autónoma Metropolitana, Unidad Iztapalapa
Keywords: polyethylene, double creep

Abstract

The double creep phenomenon was studied, after removing the uniaxial deformation, in polyethylene specimens deformed at a constant speed and at different elongations. The degree of crystallinity and the melting temperature were determined as a function of the elongation to which they were subjected. The results indicate that partial melting occurs followed by recrystallization.

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References

O'Connell, P.A.; McKenna, G.B. Yield and crazing in polymers. In Encyclopedia of Polymer Science and Technology, John Wiley & Sons, 2004. Article Online.

Ward, I. M. Mechanical Properties of Solid Polymers, 2nd ed.; Wiley: New York, 1990.

Schultz, J. Polymer Materials Science; Prentice Hall: Englewood Cliffs, 1974.

Popli, R.; Mandelkem, L. Influence of structural and morphological factors on the mechanical properties of the polyethylenes. J. Polym. Sci., Pt B, Polym. Phys. 1987, 25,441.

Seguela, R.; Rietsch, F. Double yield point in polyethylene under loading. J. Mater. Sci. Lett. 1990, 9,46.

Brooks, N. W.; Ducket, R. A.; Ward, I. M. Investigation into double yield points in polyethylene. Polymer 1992, 33, 1872.

Séguéla, R., Darras, O. Phenomenological aspects of the double yield of polyethylene and related copolymers under tensile loading. J. Mater. Sci. 1994, 29, 5342.

Lucas, J. C.; Failla, M. D.; Smith, F. L.; Mandelkem, L.; Peacock, A. J. Toe double yield in the tensile deformation of the polyethylenes. Polym. Eng. Sci. 1995, 35, 1117.

Feijoo, J. L.; Sanchez, J. J.; Muller, A. J. Toe phenomenon of double yielding in blown polyethylenefilms. Polym. Bull.1997, 39,125.

Gaucher-Miri, V.; Séguéla, R. Tensile yield of polyethylene and related copolymers: mechanical and structural evidences of two thermally activated processes. Macromolecules 1997, 30, 1158.

Schrauwen, B. A. G.; Janssen, R. P. M.; Govaert, L. E.; Maijer, H. E. H. Intrinsic deformation behavior of semicrystalline polymers. Macromolecules 2004, 3 7, 6069.

Balsamo, V.; Müller, A. J. Toe phenomenon of double yielding under tension in low-density polyethylene, linear low-density polyethylene and theirblends. J. Mater. Sci. Lett. 1993, 12, 1457.

Brooks, N. W. J.; Unwin, A. P.; Duckett, R. A.; Ward, I. M. Double yield points in polyethylene: structural changes under tensile deformation. J. Macromol. Sci.-Phys. 1995, B34 ,29.

Brooks, N. W.; Unwin, A. P.; Ducket, R. A.; Ward, I. M. Temperature and strain rate dependence of yield strain and deformation behavior in polyethylene. J. Polym. Sci. B: Polym. Phys. 1997, 35,545.

Butler, M.F.; Donald, A.M.; Ryan, A. J. Time resolved simultaneous small- and wide-angle X-ray scattering during polyethylene deformation: 1. Cold drawing of ethylene-a-olefin copolymers. Polymer 1997, 38, 5521.

Manzur,A.; Rivas, J. I. Crystallinity variations in the double yield region of polyethylene. J. Appl. Polym. Sci. 2007, 104, 3103.

Manzur, A. Strain rate effect on crystallinity variations in the double yield region of polyethylene. J. Appl. Polym. Sci. 2008, 108, 1574.

Shan, G. F., Yang, W., Yang, M. B., Xie, B. H., Fu, Q., Mai, Y. W. Investigation on tensile deformation behavior of semi-crystalline polymers. J. Macromol. Sci. Part B-Phys. 2009, 48, 799.

Manzur, A. Evolution of thermal properties of polyethylene in the double yield region after uniaxial deformation. J. Macromol. Sci. part B: Physics, 2012, 51,400.

Spathis, G.; Kontou, E. Nonlinear viscoelastic model for the prediction of double yielding in a linear low-density polyethylene film. J. Appl. Polym. Sci. 2004, 91, 3519. 47

Adhikari, R.; Buschnakowski, M.; Henning, S.; Goerlitz, S.; Huy, T. A.; Lebek, W.; Godehardt, R.; Michler, G. H.; Lach, R.; Geiger, K.; Knoll, K. Double yielding in a styrene/butadiene star block copolymer. Macromol. Rapid Commun. 2004, 25, 653.

Li, Z-M.; Huang, C-G.; Yang, W.; Yang, M-B.; Huang, R. Morphology dependent double yielding in injection molded polycarbonate/polyethylene blend. Macromol. Mater. Eng. 2004, 289, 1004.

Yamada, K.; Takayanagi, M. Superstructural description of deformation process in uniaxial extension of preoriented isotactic polypropylene. J. Appl. Polym. Sci. 1979, 24, 781.

Scogna, R. C., Register, R. A. Plastic deformation of ethylene/methacrylic acid copolymers and ionomers. J. Polym. Sci. Part B: Polym.Phys.2009,47, 1588.

Wunderlich, B. Macromolecular Physics; Academic Press: New York, 1973; Vol.1. [26]. Phillips, P. J.; Philpot, R. J. Direct evidence for melting during drawing of polyethylene. Polym. Comm.1986,27,307.

Wignall, G. D.; Wu, W. A SANS investigation into the role of melting and recrystallization during solid state deformation of polyethylene. Polym. Comm.1983,24,354.

Kennedy, M. A.; Peacock,A. J.; Mandelkem, L. Tensile properties of crystalline polymers: linear polyethylene. Macromolecules 1994, 27, 5297.

Published
2018-12-30
How to Cite
Manzur, Ángel. (2018). Crystallinity and melting temperature of polyethylene in the double creep zone. Contactos, Revista De Educación En Ciencias E Ingeniería, (110), 40 - 47. Retrieved from https://contactos.izt.uam.mx/index.php/contactos/article/view/46
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Artículos