Exploring the potential of gas-phase esterification to hydrophobize the surface of micrometric size cellulose particles

David Grégoire, Gontard Nathalie, Guerin David, Heux Laurent, Lecomte Jérôme, Molina-Boisseau Sonia, Angellier-Coussy Hélène. 2019. Exploring the potential of gas-phase esterification to hydrophobize the surface of micrometric size cellulose particles. European Polymer Journal, 115 : pp. 138-146.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Quartile : Q1, Sujet : POLYMER SCIENCE

Abstract : In order to lift the barrier of a poor interfacial interaction between cellulosic plant fibers and polymeric matrices in biocomposites, an eco-friendly surface modification of fibers was explored. A solvent-free gas-phase esterification applied to cellulose particles allowed to graft palmitoyl moieties on their surface in order to make them more compatible with non-polar polymers for composite applications. The efficiency of the treatment was evidenced from FT-IR analysis, and the degree of substitution (DS) was quantified by solid-state 13C NMR spectroscopy. The effect of surface grafting on resulting intrinsic characteristics of cellulose particles, i.e. crystallinity, thermal stability, morphology, surface free energy and water vapor sorption were investigated respectively by X-ray diffraction, thermogravimetric analysis, SEM observations coupled with image analysis, contact angle measurements and dynamic vapor sorption system (DVS). It was shown that a DS as low as 0.01 was enough to drastically increase the hydrophobicity of cellulose particles without affecting the inner properties of cellulose.

Mots-clés Agrovoc : Cellulose, Pinus, biocomposite, Étuvage, Sorption, Estérification, Acide palmitique, Polymère

Mots-clés géographiques Agrovoc : France

Mots-clés libres : Cellulose, Gas-phase esterification, Degree of substitution, Surface free energy, Crystallinity, Water vapor sorption

Classification Agris : K50 - Processing of forest products

Champ stratégique Cirad : CTS 7 (2019-) - Hors champs stratégiques

Agence(s) de financement européenne(s) : European Commission

Programme de financement européen : H2020

Projet(s) de financement européen(s) : Innovative approaches to turn agricultural waste into ecological and economic assets

Auteurs et affiliations

  • David Grégoire, Université de Montpellier (FRA)
  • Gontard Nathalie, UM2 (FRA)
  • Guerin David, Centre technique du papier (FRA)
  • Heux Laurent, CNRS (FRA)
  • Lecomte Jérôme, CIRAD-PERSYST-UMR IATE (FRA)
  • Molina-Boisseau Sonia, CNRS (FRA)
  • Angellier-Coussy Hélène, INRA (FRA) - auteur correspondant

Source : Cirad-Agritrop (

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