Chain trapping in diblock copolymers near the ordering transition

S. H. Anastasiadis*, F. Rittig, K. Chrissopoulou, G. Fleischer, G. Fytas, A. N. Semenov, J. Kärger, M. Xenidou, S. Pispas, Nikolaos Hadjichristidis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The mean-square displacement, 〈Δr2〉, of very high molecular weight diblock copolymers in solutions near the disorder-to-order transition is investigated by pulsed-field-gradient NMR. The thermodynamic potential influencing the motion leads to a time-independent 〈Δr2〉 at short times followed by free-diffusional behavior. The plateau is attributed to a trapping of the copolymer chains at the "quasi-interfaces" formed by slow composition fluctuations.

Original languageEnglish (US)
Pages (from-to)68-74
Number of pages7
JournalEurophysics Letters
Volume51
Issue number1
DOIs
StatePublished - Jul 1 2000

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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