Skip to Main content Skip to Navigation
Journal articles

Mixed acylation of Scots pine sawdust and impact on hydrophobicity

Abstract : Acetic–fatty esters of Scots pine sawdust (SPS) were obtained by reaction of SPS with mixtures containing acetic–fatty anhydrides and no solvent or catalyst. Such mixtures were synthesized by reaction between a carboxylic acid and acetic anhydride. The global reaction of acetic anhydride and a fatty acid yields at equilibrium a mixture of five compounds: acetic–fatty anhydride, acetic anhydride, fatty acid, acetic acid and fatty anhydride. The influence of temperature, molar ratio, reaction time and length of the fatty chain on the esterification and on the ratio of grafted acetyl/fatty acyl was investigated. Static contact angles (CAs) with water were measured over 5 min. CA values were dependent on the fatty acyl content and independent of the acetyl content. The minimum ester content of the oleoyl group required to obtain permanent water repellency was 25 mmol kg−1. Water vapour adsorption measurements indicated that in contrast to water repellency, hydrophobicity to water vapour was correlated with the total mass acyl content.
Document type :
Journal articles
Complete list of metadata

Cited literature [27 references]  Display  Hide  Download
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Wednesday, March 13, 2019 - 4:03:25 PM
Last modification on : Monday, June 22, 2020 - 3:58:02 PM
Long-term archiving on: : Friday, June 14, 2019 - 4:28:02 PM


Files produced by the author(s)




Jérôme Peydecastaing, Carlos Vaca-Garcia, Marie-Elisabeth Borredon, Silham El Kasmi. Mixed acylation of Scots pine sawdust and impact on hydrophobicity. Wood Material Science and Engineering, Taylor & Francis, 2009, 4 (3-4), pp.154-166. ⟨10.1080/17480270903411074⟩. ⟨hal-02066700⟩



Record views


Files downloads