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The European Physical Journal E

, Volume 11, Issue 1, pp 3–6 | Cite as

End-chain segment ordering in lamellar sublayers of a diblock copolymer

  • C. Lorthioir
  • P. Auroy
  • B. Deloche
Rapid Note

Abstract:

The segmental ordering within a lamellar polystyrene-polydimethylsiloxane diblock (PS-PDMS) was examined by NMR. A non-uniform stretching of the PDMS chains was evidenced. Although chain segments displaying isotropic reorientational motions are present along the chains, relaxation measurements on the free PDMS extremities demonstrate that these latter are oriented and submitted to a non-zero constraint. This specific result allows to precise some features of the order distribution within the lamellae.

PACS. 68.08.-p Liquid-solid interfaces – 82.35.Jk Copolymers, phase transitions, structure – 76.60.-k Nuclear magnetic resonance and relaxation 

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Copyright information

© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2003

Authors and Affiliations

  • C. Lorthioir
    • 1
  • P. Auroy
    • 2
  • B. Deloche
    • 1
  1. 1.Laboratoire de Physique des Solides (CNRS-UMR 8502), Université Paris-Sud, 91405 Orsay, FranceFR
  2. 2.Physico-Chimie Curie (CNRS-UMR 168), Institut Curie, 11 rue Pierre et Marie Curie, 75005 Paris, FranceFR

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