Cellulose acetylation by functional monomers used as a potential way for the development of non-biocidal wood treatments

F. Lhumeau
LPIM, FR

Keywords: acetylation, non-biocidal polymers, wood protection, cellulose

Summary:

In order to protect wood used outdoors, it is necessary to increase wood hydrophobicity to reduce the continuous water exchanges with environment. Hydrophobic properties can be conferred by grafting functional monomers to mask the hydroxyl groups responsible for the hygroscopic nature of wood. This work presents cellulose acetylation by itaconic anhydride that has a vinyl bond allowing a subsequent polymerization and permiting to graft non-biocidal polymers on wood. Grafting of itaconic anhydride was identified and optimized using infrared spectroscopy and was confirmed by thermogravimetric analysis. In addition, grafting of linear anhydride with chlorine as target function has been investigated in order to quantify the grafting.