Issue 16, 2011
From the journal:

Soft Matter

Polymers under extreme two-dimensional confinement: Poly(ethylene oxide) in graphite oxide†

Fabienne Barroso-Bujans,*a   Felix Fernandez-Alonso,‡b   Silvina Cerveny,a   Stewart F. Parker,b   Angel Alegríaac  and  Juan Colmeneroacd  

* Corresponding authors

a Centro de Física de Materiales-Material Physics Center (CSIC-UPV/EHU), Paseo Manuel Lardizábal 5, San Sebastián, Spain
E-mail: fbarroso@ehu.es
Fax: +34 94301 5800
Tel: +34 94301 8793

b ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, United Kingdom

c Departamento de Física de Materiales, Universidad del País Vasco (UPV/EHU), Apartado 1072, San Sebastián, Spain

d Donostia International Physics Center, Paseo Manuel Lardizábal 4, San Sebastián, Spain

Abstract

The confinement of poly(ethylene oxide) in graphite oxide is studied using a combination of diffraction, calorimetric, and spectroscopic methods. Polymer intercalation into subnanometer graphite oxide layers leads to the complete suppression of crystallization phenomena and dielectric α-relaxation processes, as well as a slowdown of β-relaxation modes. For the first time, high-resolution inelastic neutron scattering shows that poly(ethylene oxide) under these extreme confinement conditions adopts a planar zig-zag conformation, in no way resembling the characteristic 72 helical structure of the bulk crystal. The neutron data also shows a strong suppression of the COC and OCC bending modes and a distinct broadening of C–O torsional bands.

Graphical abstract: Polymers under extreme two-dimensional confinement: Poly(ethylene oxide) in graphite oxide

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Article information

DOI
https://doi.org/10.1039/C1SM05661A
Article type
Communication
Submitted
13 Apr 2011
Accepted
31 May 2011
First published
23 Jun 2011

Soft Matter, 2011,7, 7173-7176

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Polymers under extreme two-dimensional confinement: Poly(ethylene oxide) in graphite oxide

F. Barroso-Bujans, F. Fernandez-Alonso, S. Cerveny, S. F. Parker, A. Alegría and J. Colmenero, Soft Matter, 2011, 7, 7173 DOI: 10.1039/C1SM05661A

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