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α-Chitin was partially deacetylated to degrees of N-acetylation (DNAc) 0.74–0.70 by 33% NaOH treatment at 90°C for 2–4h. Solid recovery ratios or yields of the products were 85–90%. Crystallinity index and crystal size of the original α-chitin were maintained, showing that the partial deacetylation mostly occurred on the α-chitin crystallite surfaces. Transparent and highly viscous liquids were obtained...
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