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Applied Physics A

, Volume 59, Issue 2, pp 145–150 | Cite as

Scanning force microscopy of the crystalline/amorphous interface of ultradrawn poly(ethylene)

  • L. M. Eng
  • K. D. Jandt
  • H. Fuchs
  • J. Petermann
Scanning Probe Methods In Materials Science (Part II)

Abstract

We report on high-resolution experiments by Scanning Force Microscopy (SFM) indicating the tight folding of neighbouring molecular chains in Poly(Ethylene) (PE) crystals. Ultradrawn PE films were prepared in the stacked lamellar morphology exhibiting crystalline lamellae and amorphous parts. The [001] direction of the lamellae is aligned parallel to the substrate surface resulting in {hk0} planes perpendicular to the symmetry axis of the probing tip. This preparation technique allows the direct observation of the molecular arrangement in polymeric crystals as well as an investigation of the crystalline/amorphous interface by SFM: at lower magnification, crystalline and amorphous parts of the film can be distinguished clearly. High-resolution imaging on the crystalline lamellae reveals a PE pitch height of 0.26±0.02 nm while the interchain spacing measures 0.50±0.02 nm consistent with (100) lattice planes aligned parallel to the substrate surface. Finally, the molecular folding at the edges of the lamellae has been studied. Evidence is found for the adjacent reentry of individual molecules at the edge of (100) surfaces.

PACS

61.14 61.16 61.65 

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References

  1. 1.
    P.H. Till: J. Polymer Sci. 24, 301 (1957)Google Scholar
  2. 1a.
    A. Keller: Philos Mag. 2, 1171 (1957)Google Scholar
  3. 1b.
    E.W. Fischer: Z. Naturforsch. 12a, 753 (1957)Google Scholar
  4. 2.
    G.B. McKenna, G.W. Bradley, H.K. Dunn, W.O. Statton: J. Biomed. Mater. Res. 13, 782 (1979)Google Scholar
  5. 2a.
    P. Eyerer, M. Kurth, R. Ellwanger, H.M. dler H.-A. Federolf, A. Siegmann: Kunststoffe 77, 617 (1987)Google Scholar
  6. 2b.
    R.M. Rose, E.V. Goldfarb, E. Ellis, A. Crugnola: Org. Coat. Plast. Chem. 37, 280 (1977)Google Scholar
  7. 3.
    F. Khoury, E. Passaglia: The Morphology of Crystalline Synthetic Polymers, in Crystalline and Noncrystalline Solids, ed. by N.B. Hannay, Treatise on Solid State Chemistry, Vol. 3. Plenum, New York (1976) p. 335Google Scholar
  8. 4.
    D.C. Bassett, A. Keller: Philos. Mag. 7, 1553 (1962)Google Scholar
  9. 4a.
    H.D. Keith: J. Appl. Phys. 35, 3115 (1964)Google Scholar
  10. 4b.
    P.H. Geil, D.H. Reneker: J. Polym. Sci. 51, (1961)Google Scholar
  11. 4c.
    E.W. Fischer, R. Lorentz: Kolloid Z.Z. Polym. 189, 97 (1963)Google Scholar
  12. 4d.
    B. Wunderlich, E.A. James, S.W. Shu: J. Polym. Sci. A2, 2759 (1964)Google Scholar
  13. 5.
    H.K. Wickramasinghe: Sci. Am. October, 74, (1989)Google Scholar
  14. 6.
    G. Binnig, H. Rohrer: Helv. Phys. Acta 55, 726 (1982)Google Scholar
  15. 7.
    G. Binnig, C.F. Quate, Ch. Gerber: Phys. Rev. Lett. 56, 930 (1986)Google Scholar
  16. 8.
    J. Petermann, R.M. Gohil: J. Mater. Sci. 14, 2260 (1979)Google Scholar
  17. 9.
    I. Smith, R. Howland: Solid State Technol. 53, 518 (1990)Google Scholar
  18. 10.
    P.H. Geil: Polymer Single Crystals (Krieger, Huntington, NY 1973)Google Scholar
  19. 11.
    A. Keller, A. O'Connor: Discuss. Faraday Soc. 25, 114 (1958)Google Scholar
  20. 12.
    B. Cayrol, J. Petermann: J. Polym. Sci. 12, 2169 (1974)Google Scholar
  21. 13.
    B. Wunderlich: In Macromolecular Physics, Vol. 1 (Academic, New York 1973)Google Scholar
  22. 14.
    K.D. Jandt, M. Buhk, J. Petermann, L.M. Eng, H. Fuchs: Polym. Bull. 27, 101 (1991)Google Scholar
  23. 15.
    C.W. Bunn: Trans. Faraday Soc. 35, 482 (1939)Google Scholar
  24. 16.
    Since mechanically the SFM cantilever and the organic sample may be regarded as two springs of compliances cL and cF put in series, the apparant height will be reduced by a factor of cF/(cL + cF)Google Scholar
  25. 17.
    R. Piner, R. Reifenberger, D.C. Martin, E.L. Thomas, R.P. Apkarian: J. Polym. Sci., Polym. Lett. Ed. 28, 399 (1990)Google Scholar
  26. 17a.
    S.N. Magonov, K. Qvarnström, V. Elings, H.-J. Cantow: Polym. Bull. 25, 689 (1991)Google Scholar
  27. 17b.
    L.M. Eng, H. Fuchs: UnpublishedGoogle Scholar
  28. 18.
    P.E. McMahon, R.L. McCullough, A.A. Schlegel: J. Appl. Phys. 38, 4123 (1967)Google Scholar
  29. 18a.
    D.C. Bassett, A. Keller: Philos. Mag. 8, 1753 (1963)Google Scholar

Copyright information

© Springer-Verlag 1994

Authors and Affiliations

  • L. M. Eng
    • 1
  • K. D. Jandt
    • 2
  • H. Fuchs
    • 1
  • J. Petermann
    • 2
  1. 1.Physikalisches InstitutUniversität MünsterMünsterGermany
  2. 2.FB ChemietechnikUniversität DortmundDortmundGermany

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