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Molecular mobility of poplar cell wall polymers studied by dielectric techniques

Jafarpour Moghaddam, Golnaz and Dantras, Eric and Boudet, Alain-Michel and Lacabanne, Colette Molecular mobility of poplar cell wall polymers studied by dielectric techniques. (2008) Journal of Non-Crystalline Solids, 354 (27). 3207-3214. ISSN 0022-3093

(Document in English)

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Official URL: http://dx.doi.org/10.1016/j.jnoncrysol.2008.01.008


In this work, thermally stimulated currents (TSC) analyzes combined with dynamic dielectric spectroscopy (DDS) have been applied to the investigation of polymers’ molecular mobility involves in poplar cell wall. The molecular origin of the various dielectric relaxations has been determined. Cellulose and lignin effects in wood dielectric response were distinguished. The correlation between results obtained by both dielectric methods allows us to follow molecular mobility involved in delocalized movement as primary relaxation mode. For these two major components of wood, the evolution of relaxation times involve in a-relaxation mode is explained using the strong/fragile pattern. We compared the cellulose and lignin in situ and ex situ responses to interpret wood compound behavior. The importance of structural wood interactions which modified the molecular mobility of polymer components will be underlined.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Journal of Non-Crystalline Solids website : http://www.sciencedirect.com/science/journal/00223093
HAL Id:hal-03590691
Audience (journal):International peer-reviewed journal
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Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
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Deposited On:22 Apr 2009 12:08

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