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Journal of Materials Science

, Volume 30, Issue 5, pp 1187–1195 | Cite as

Microstructure of quenched and annealed films of isotactic polypropylene

Part I
  • N. Alberola
  • M. Fugier
  • D. Petit
  • B. Fillon
Papers

Abstract

The Microstructure of quenched and annealed iPP films was investigated by means of differential scanning calorimetry (DSC), density measurements, wide-angle X-ray diffraction (WAXD) and dynamic mechanical spectrometry (DMS). It was found that quenched iPP can be described as a biphasic material constituted of an amorphous phase strongly cross-linked by many crystalline entities exhibiting both small size and very low degree of perfection. Such microcrystallites act as true physical ties of the amorphous phase. On increasing the annealing temperature from 20 °C (quenched film) to 160 °C, the crystallinity ratio first remained constant for annealing temperatures between 20 and 93 °C and then it increased. Subsequently, both size and degree of perfection of crystalline entities progressively increased and tended towards the characteristics of the monoclinic phase. This resulted in a progressive decrease in the physical cross-linking degree of the amorphous phase, even for the samples exhibiting the highest crystallinity ratio.

Keywords

Microstructure Differential Scanning Calorimetry Polypropylene Material Processing Amorphous Phase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    D. R. Morrow, J. Macromol. Sci. Phys. B3 (1) (1969) 53.CrossRefGoogle Scholar
  2. 2.
    J. Varga, J. Mater. Sci. 27 (1992) 2557.CrossRefGoogle Scholar
  3. 3.
    Z. Mencik, J. Macromol. Sci. B(6) (1972) 101.CrossRefGoogle Scholar
  4. 4.
    G. Natta, P. Corradini and M. Cesari, Atti. Acad. Naz. Lincei Rend. 21 (1956) 65.Google Scholar
  5. 5.
    R. J. Samuels and R. Y. Yee, J. Polym. Sci. A(2) 10 (1972) 385.CrossRefGoogle Scholar
  6. 6.
    A. Turner Jones, J. M. Aizlewood and D. R. Beckett, Makromol. Chem. 75 (1964) 134.CrossRefGoogle Scholar
  7. 7.
    Hiskosaka, Jpn J. Appl. Phys. 12 (1973) 1293.CrossRefGoogle Scholar
  8. 8.
    B. Lotz, S. Graff and J. C. Wittman, J. Polym. Sci. Polym. Phys. Ed. 24 (1986) 2017.CrossRefGoogle Scholar
  9. 9.
    R. L. Miller, Polymer 1 (1960) 135.CrossRefGoogle Scholar
  10. 10.
    R. Zannetti, G. Celotti, A. Fichera and R. Francesconi, Makromol. Chem. 128 (1969) 137.CrossRefGoogle Scholar
  11. 11.
    G. Bodor, M. Grell and A. Kello, Faserforsch. Textil. Technol. 15 (1964) 527.Google Scholar
  12. 12.
    D. M. Gezowich and P. H. Geil, Polym. Eng. Sci. 8 (1968) 202.CrossRefGoogle Scholar
  13. 13.
    P. B. McAllister, T. J. Carter and R. M. Hinde, J. Polym. Sci. Polym. Phys. Ed. 16 (1978) 49.CrossRefGoogle Scholar
  14. 14.
    C. C. Hsu, P. H. Geil, H. Miyaji and K. Asai, ibid. 24 (1986) 2379.CrossRefGoogle Scholar
  15. 15.
    G. Natta, SPE J. (1979) 377.Google Scholar
  16. 16.
    J. Grebowicz, I. F. Lau and B. Wunderlich, Polym. Sci. Polym. Symp. 71 (1984) 19.CrossRefGoogle Scholar
  17. 17.
    M. Glotin, R. R. Rahalkar, P. J. Hendra, M. E. A. Cudby and H. A. Willis, Polymer 22 (1981) 731.CrossRefGoogle Scholar
  18. 18.
    P. J. Hendra, J. Vile, H. A. Willis, V. Zichy and M. E. A. Cubdy, ibid. 25 (1984) 785.CrossRefGoogle Scholar
  19. 19.
    R. Saraf and R. S. Porter, Molec. Cryst. Liq. Cryst. Lett. 2 (1985) 85.Google Scholar
  20. 20.
    P. Corradini, V. Petracccone, C. De Rosa and G. Guerra, Macromolecules 19 (1986) 2699.CrossRefGoogle Scholar
  21. 21.
    A. Fichera and R. Zannetti, Mackromol. Chem. 128 (1975) 137.Google Scholar
  22. 22.
    D. T. Grubb and D. Y. Yoon, Polym. Commun. 27 (1986) 84.Google Scholar
  23. 23.
    V. Vittoria, J. Macromol. Sci. Phys. B28 (1989) 489.CrossRefGoogle Scholar
  24. 24.
    Idem J. Polym. Sci. Polym. Phys. Ed. 24 (1986) 451.CrossRefGoogle Scholar
  25. 25.
    Idem J. Mater. Sci. 27 (1992) 4350.CrossRefGoogle Scholar
  26. 26.
    V. Vittoria and A. Perullo, J. Macromol. Sci. B25 (1986) 2671.Google Scholar
  27. 27.
    N. Alberola, M. Fugier, D. Petit and B. Fillon, J. Mater. Sci. 30 (1995) in press.Google Scholar
  28. 28.
    J. A. Gailey and R. H. Ralston, SPE Trans. 4 (1964) 29.Google Scholar
  29. 29.
    A. Fichera and R. Zannetti, Makromol. Chem. 176 (1975) 1885.CrossRefGoogle Scholar
  30. 30.
    D. J. Blundell, Polymer 28 (1987) 2248.CrossRefGoogle Scholar
  31. 31.
    P. Cebe and S. D. Hong, ibid. 27 (1986) 1183.CrossRefGoogle Scholar
  32. 32.
    N. Alberola, J. Mater. Sci. 26 (1991) 1856.CrossRefGoogle Scholar
  33. 33.
    B. Wunderlich, “Macromolecular Physics”, Vol. 1 (Academic Press, New York, 1973) p. 549.Google Scholar
  34. 34.
    S. Z. D. Cheng, H. S. Bu and B. Wunderlich, Polymer 29 (1988) 579.CrossRefGoogle Scholar
  35. 35.
    S. H. Ryu, C. G. Gogos and M. Xanthos, ibid. 32 (1991) 2449.CrossRefGoogle Scholar
  36. 36.
    C. Passingham, P. J. Hendra, M. E. A. Cudby, V. Zichy and M. Weller, Eur. Polym. J. 26 (1990) 631.CrossRefGoogle Scholar
  37. 37.
    Y. Lee, R. S. Porter and J. S. Lin, Macromolecules 22 (1989) 1756.CrossRefGoogle Scholar
  38. 38.
    S. S. Chang, Polym. Commun. 29 (1988) 138.CrossRefGoogle Scholar
  39. 39.
    R. Alamo and L. Mandelkern, J. Polym. Sci. B Polym. Phys. Ed. 24 (1986) 2087.CrossRefGoogle Scholar
  40. 40.
    M. E. Nichols and R. E. Robertson, ibid. 30 (1992) 305.CrossRefGoogle Scholar
  41. 41.
    M. P. Lattimer, J. K. Hobbs, M. J. Hill and P. J. Barham, Polymer 33 (1992) 3971.CrossRefGoogle Scholar
  42. 42.
    G. Natta, P. Corradini and M. Cesari, Atti. Accad. Nazl. Lincei. Rend. Sci. Fis. Mat. et Nat. 22 (1957) 11.Google Scholar
  43. 43.
    F. De Candia, P. Iannelli, G. Staulo and V. Vittoria, Coll. Polym. Sci. 266 (1988) 608.CrossRefGoogle Scholar
  44. 44.
    A. Cecere, R. Greco and A. Taglialatela, Polymer 33 (1992) 1411.CrossRefGoogle Scholar
  45. 45.
    N. Alberola, J. Y. Cavaille and J. Perez, Eur. Polym. J. 28 (1992) 935.CrossRefGoogle Scholar
  46. 46.
    R. F. Boyer, Rubber Chem. Technol. 36 (1963) 1303.CrossRefGoogle Scholar

Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • N. Alberola
    • 1
  • M. Fugier
    • 1
  • D. Petit
    • 2
  • B. Fillon
    • 2
  1. 1.Laboratoire Matériaux CompositesE.S.I.G.E.C., Université de SavoieLe Bourget du LacFrance
  2. 2.Péchiney Centre de Recherches de VoreppeZ. I. Centr'AlpVoreppeFrance

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