We investigated the system of TEMPO-mediated oxidation of hemp cellulose (Cannabis sativa L. Subsp. Sativa) by using the 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) radical and then the oxidized celluloses were converted to individual cellulose nanofibers by mild mechanical treatment. We focused on the TEMPO-mediated oxidation of Thai hemp cellulose for preparation of cellulose nanofibers to clarify how this system affects the morphology of long hemp fiber towards nano-scale fibrillated celluloses. The hemp cellulose had a quite high crystallinity. The carboxylate contents were more than 1.5 mmol/g and the nanofiber yields for hemp TEMPO-oxidized celluloses were more than 96%. Moreover, it was well dispersed in water as mostly individual nanofibers and the aqueous dispersions had high light transmittances.

TEMPO-mediated oxidation of hemp cellulose (<i>Cannabis sativa</i> L. Subsp. Sativa)

243rd National Meeting (2012)

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