Skip to Main content Skip to Navigation
Journal articles

Solvent-free fatty acylation of cellulose and lignocellulosic wastes. Part 2: reactions with fatty acids

Abstract : The mixed acylation of cellulose with fatty acids and acetic anhydride was accomplished in an excess of fatty acid, thus avoiding the addition of a toxic solvent. The experimental design enabled the parameters of a model reaction with octanoic acid to be optimized. The products contained both acetyl and octanoyl acyl groups in a 2.4/1 ratio and the maximum degree of substitution (DS) was 2.2. The use of fatty acids higher than C8 resulted in a decrease of the DS. The model reaction was applied to the esterification of four lignocellulosic wastes (LW). Their reactivity was comparable to that of cellulose when no pretreatment was used. A solvent-exchange pretreatment improved the acylation of LW by about 60%, whereas that of cellulose was increased by more than 400%. The hydrophobic character of the esterified products was confirmed.
Document type :
Journal articles
Complete list of metadata

Cited literature [17 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02079794
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Tuesday, March 26, 2019 - 11:51:23 AM
Last modification on : Monday, June 22, 2020 - 3:58:02 PM
Long-term archiving on: : Thursday, June 27, 2019 - 3:09:54 PM

File

Vaca-Garcia_23240.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Carlos Vaca-Garcia, Marie-Elisabeth Borredon. Solvent-free fatty acylation of cellulose and lignocellulosic wastes. Part 2: reactions with fatty acids. Bioresource Technology, Elsevier, 1999, 70 (2), pp.135-142. ⟨10.1016/S0960-8524(99)00034-6⟩. ⟨hal-02079794⟩

Share

Metrics

Record views

67

Files downloads

373