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We report on an efficient method for extracting cellulose nanofibers with cellulose II crystal structure that presents a relatively high yield (approximately 82%) after mechanical treatment. Delignification technique plays an important role in the conversion of crystals from cellulose I to cellulose II during the mercerization process and in the subsequent fibrillation of cellulose II nanofibers....
Well-dispersed cellulose II nanofibers with high purity of 92 % and uniform width of 15–40 nm were isolated from wood and compared to cellulose I nanofibers. First, ground wood powder was purified by series of chemical treatments. The resulting purified pulp was treated with 17.5 wt% sodium hydroxide (NaOH) solution to mercerize the cellulose. The mercerized pulp was further mechanically nanofibrillated...
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