Issue 38, 2012
From the journal:

Soft Matter

Exploring the rearrangement of amorphous cellulose model thin films upon heat treatment†

Tamilselvan Mohan,‡a   Stefan Spirk,‡*a   Rupert Kargl,‡b   Aleš Doliška,‡a   Alenka Vesel,c   Ingo Salzmann,d   Roland Resel,e   Volker Ribitsch‡b  and  Karin Stana-Kleinschek‡a  

* Corresponding authors

a Faculty of Mechanical Engineering, Laboratory for Characterization and Processing of Polymers, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia
E-mail: stefan.spirk@uni-mb.si
Fax: +386 22207996
Tel: +386 22207947

b Karl-Franzens-Universität Graz, Institut für Chemie, Heinrichstraße 28/III, 8010 Graz, Austria

c Jožef Stefan Institute, Jamova 39, SI-1001 Ljubljana, Slovenia

d Humboldt Universität zu Berlin, Institut für Physik, Unter den Linden 6, 10099 Berlin, Germany

e University of Technology Graz, Institute of Solid State Physics, Petersgasse 16, 8010 Graz, Austria

Abstract

The behavior of amorphous cellulose model thin films upon heat treatment is investigated. Upon heat treatment, a structural rearrangement in the films from a featureless to a fibrillar structure is observed which correlates with the regeneration time and total cellulose content as proven by atomic force microscopy and X-ray photoelectron spectroscopy. ATR-IR spectroscopy proves the presence of stronger hydrogen bonds in the heat treated surfaces which originate from a reorganization of the cellulose chains and pore structure. The rearrangement is accompanied with an increased surface hydrophobicity, a reduced swelling capacity and a reduction in the water content of the films. An increase in crystallinity of the films is not observed.

Graphical abstract: Exploring the rearrangement of amorphous cellulose model thin films upon heat treatment

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Article information

DOI
https://doi.org/10.1039/C2SM25911G
Article type
Paper
Submitted
19 Apr 2012
Accepted
17 Jul 2012
First published
09 Aug 2012

Soft Matter, 2012,8, 9807-9815

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Exploring the rearrangement of amorphous cellulose model thin films upon heat treatment

T. Mohan, S. Spirk, R. Kargl, A. Doliška, A. Vesel, I. Salzmann, R. Resel, V. Ribitsch and K. Stana-Kleinschek, Soft Matter, 2012, 8, 9807 DOI: 10.1039/C2SM25911G

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