Skip to main content
SpringerLink
Log in

Wachstumsdefekte in polymeren Nadelkristallen

  • Originalarbeiten
  • Published:
Colloid and Polymer Science Aims and scope Submit manuscript

Zusammenfassung

Die Gitterdefekte in polymeren Nadelkristallen (shish) werden untersucht. Die Länge eines Nadelkristalles kann je nach Herstellungsart.zwischen 0.1μm und mehrerenμm variieren. In den einzelnen Nadelkristallen bilden sich längs der Nadelrichtung Dichteschwankungen aus. Die Schwankungslängen hängen in der Hauptsache von der Polymerart ab, während die Amplituden der Schwankung von der thermischen Vorgeschichte abhängen. Die Schwankungslängen sind zwischen 90 Å und 300 Å.

In Nadelkristallen aus isotaktischem Polystyrol sind zusätzlich (001)-Korngrenzen vorhanden. Die Orientierung beider Kristallgitter entspricht einer Rotation von 180° um die Molekülachse. Ursachen für diesen Typ von Korngren zen werden diskutiert.

Summary

Lattice defects in polymeric needle crystals (shish) were investigated. The length of the crystals depends on preparation conditions and may vary between 0.1μm and severalμm. Density fluctuations exist along the individual needle crystals. The wave length of the fluctuation is controlled by the chemical nature of the polymer and its amplitude by preparation and annealing conditions.

The wave length of the density fluctuations may vary from 90 Å to 300 Å.

Needle crystals from isotactic polystyrene additionally exhibit (001) grain boundaries. The orientation relationship of adjacent grains along a needle corresponds to a 180° rotation of the lattice around the molecule axes. The molecular nature of that grain boundary is discussed.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Literatur

  1. Noether, H. D., W. Whilney, Kolloid-Z. u. Z. Polymere251, 991 (1973).

    Google Scholar 

  2. Cayrol, B., J. Petermann, J. Polym. Sci. A-2,12, 2169 (1974).

    Google Scholar 

  3. Pennings, A. J., A. M. Kiel, Kolloid-Z. u. Z. Polymere205, 160 (1965).

    Google Scholar 

  4. Andrews, E. H., Angew. Chem., Intern. Ed.13, 113 (1974).

    Google Scholar 

  5. Pennings, A. J., Makromol. Chem. Suppl.2, 99 (1979).

    Google Scholar 

  6. Capaccio, G., I. M. Ward, Polymer15, 233 (1974),16, 239 (1975).

    Google Scholar 

  7. Frank, F. C., Proc. Roy. Soc. London,A 319, 127 (1970).

    Google Scholar 

  8. Petermann, J., M. Miles, H. Gleiter, J. Polym. Sci. Polym. Phys.17, 55 (1979).

    Google Scholar 

  9. Petermann, J., R. M. Gohil, J. Mat. Sci.14, 2260 (1979).

    Google Scholar 

  10. Schultz, J. M., J. S. Lin R. W. Hendricks, J. Petermann, R. M. Gohil, J. Polym. Sci. Polym. Phys., (eingereicht).

  11. Petermann, J., R. M. Gohil, J. M. Schultz, R. W. Hendricks, J. S. Lin, Polymer, (eingereicht).

  12. Petermann, J., H. Gleiter, Phil. Mag.31, 929 (1975).

    Google Scholar 

  13. Blasenbrey, S., W. Pechhold, Ber. Bunsenges.74, 784 (1970), Kolloid-Z. u. Z. Polymere241, 955 (1970).

    Google Scholar 

  14. Bäro, G., H. Gleiter, Z. Metallkunde63, 665 (1972).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institut für Werkstoffphysik und Werkstofftechnologie Bau 2, Universität des Saarlandes, 6600, Saarbrücken, West Germany

    J. Rau, R. M. Gohil & J. Petermann

  2. Dept. Chem. Engineering, University of Delaware, 19711, Newark, Delaware, USA

    J. M. Schultz

Authors
  1. J. Rau
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. R. M. Gohil
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. J. Petermann
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. J. M. Schultz
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Mit 8 Abbildungen

Rights and permissions

Reprints and permissions

About this article

Cite this article

Rau, J., Gohil, R.M., Petermann, J. et al. Wachstumsdefekte in polymeren Nadelkristallen. Colloid & Polymer Sci 259, 241–246 (1981). https://doi.org/10.1007/BF01381767

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01381767

Schlüsselwörter

Search

Navigation