Issue 9, 2008

Anomalous relaxation of self-assembled alkyl nanodomains in high-order poly(n-alkyl methacrylates)

Abstract

We have exploited the selectivity of neutron scattering combined with isotopic substitution to study the structure and dynamics of poly(n-alkyl methacrylates). Our diffraction data strongly support the suggested nanosegregation of main-chains and side groups. Moreover, we have been able to separately follow the dynamics of both subsystems at a molecular scale. While the structural relaxation observed at the main-chain level is standard, for high-order members the correlations involving side groups within the alkyl nanodomains relax through an exotic logarithmic decay. In these polymers, a strong dynamic asymmetry also develops. We discuss possible theoretical frameworks for the anomalous relaxation observed.

Graphical abstract: Anomalous relaxation of self-assembled alkyl nanodomains in high-order poly(n-alkyl methacrylates)

Article information

Article type
Communication
Submitted
28 Apr 2008
Accepted
04 Jun 2008
First published
10 Jul 2008

Soft Matter, 2008,4, 1792-1795

Anomalous relaxation of self-assembled alkyl nanodomains in high-order poly(n-alkyl methacrylates)

A. Arbe, A.-C. Genix, J. Colmenero, D. Richter and P. Fouquet, Soft Matter, 2008, 4, 1792 DOI: 10.1039/B807192F

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