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Orientational order in LCP layers

  • D. Geschke
  • G. Fleischer
Conference paper
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 85)

Abstract

Solid state NMR is used to study the orientational order in thin layers of liquid-crystalline polymers (LCP) after a preceding influence of an orienting magnetic field \(\vec B\). — Samples were produced of polysiloxanes with mesogenic groups in the side chains by melting the polymer between glass plates coated with a polymidie film. For orientation they were placed in the external magnetic field and slowly cooled down below the glass transition temperature. — Good domain orientation could be obtained if \(\vec B\)acted parallel to the glass plates. Alignment could be realized only in part if \(\vec B\)was directed perpendicular to them. There is no remarkable orientation effect of the glass plates themselves.

Key words

Lliquid-crystalline polymers polymer layers orientational order solid-state NMR 

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References

  1. 1.
    Piskunov MV, Kostromin SG, Stroganov LB, Shibaev VP, Plate NA (1982) Makromol Chem Rapid Commun 3:443–447CrossRefGoogle Scholar
  2. 2.
    Roth H, Krücke B (1986) Makromol Chem 187:2655–2662CrossRefGoogle Scholar
  3. 3.
    Boeffel C, Spiess HW, Hisgen BU, Ringsdorf H, Ohm H, Kirste RG (1986) Makromol Chem Rapid Commun 7:777–783CrossRefGoogle Scholar
  4. 4.
    Pschorn H, Spiess HW, Hisgen B, Ringsdorf H (1986) Makromol Chem 187:2711–2723CrossRefGoogle Scholar
  5. 5.
    Perry BC, Koenig JL (1988) Polym Prepr (Am Chem Soc, Div Polym Chem) 29:50–51Google Scholar
  6. 6.
    Kireev EV, Stroganov LB, Gubina T, Kostromin SG, Talroze RV, Shibaev VP, Plate NA (1989) Vysokomol Soed B31:261–263Google Scholar
  7. 7.
    Frieser A, Hillner B, Schmiedel H (1981) Wiss Z Karl-Marx-Univ Leipzig, Math-Naturwiss Reihe 30:156–163Google Scholar
  8. 8.
    Geschke D, Fleischer G, Dressler R (1989) Makromol Chem, Rapid Commun 10:595–599CrossRefGoogle Scholar
  9. 9.
    Geschke D, Hempel G (1989) Proceedings of the “9. Tagung Polymerphysik”, Potsdam 24.–28.4., Phys Gesellschaft der DDR, Berlin p 14Google Scholar
  10. 10.
    Limmer S, Schmiedel H, Hillner B, Lösche A, Grande S (1980) J Phys (Les Ulis, Fr) 41:869–878CrossRefGoogle Scholar

Copyright information

© Dr. Dietrich Steinkopff Verlag GmbH & Co. KG 1991

Authors and Affiliations

  • D. Geschke
    • 1
  • G. Fleischer
    • 1
  1. 1.Sektion PhysikUniversität LeipzigLeipzigFRG

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