The goal of this research was to determine if we can use chemical and mechanical procedures to produce TEMPO oxidized nanocellulose and use it in the manufacture of a new, enviormentaly friendly polymer which would replace the already well established synthetic polymers. Cellulose fibres were chemically modified with the use of the (2,2,6,6-tetramethylpiperidin-1-yl)oxidanyl (TEMPO) radical and the modified product was mechanically disintegrated to TEMPO oxidized nanocellulose. This was used as a precursor in the manufacture of an ester, together with Desmophen 1262. The chemical and mechanical changes in the materials were monitored during the whole process and comapred to their unmodified counterparts. We have determined that through chemical and mechanical processing we can produce nanocellulose fibres with a high content of carboxylic groups, which are suitable for manufacture of an ester. Ester as the final product was analysed by thermal analysis and IR spectroscopy. Thermal properties do not differ significantly from those of cellulose and TEMPO oxidized nanocellulose but IR spectroscopy shows a change in the chemical structure that could mean an ester functional group. This means a successul graft of the polyol Desmophen 1262 to the TEMPO oxidized nanocellulose. The resulting ester could potentially replace well established synthetic polymers
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