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Surface deacetylation of chitin nanowhiskers (CtNWs) to chitosan–sheath/chitin-core nanowhiskers (CsNWs) was successfully monitored by liquid-state high-resolution NMR of colloidal suspensions of these never-dried nanowhiskers. CtNWs were derived from acid hydrolysis (3N HCl, 30mL/g, 90min, 104°C) of chitin at 65% yield and 86% CrI. Deacetylation (50% NaOH, 48h, 50°C) of CtNWs generated CsNWs with...
Chitosan-sheath and α-chitin-core nanowhiskers (CsNWs) have been successfully generated by surface deacetylation of chitin nanowhiskers (CtNWs) in the never-dried state. Acid hydrolysis (3N HCl, 30mL/g, 104°C) of pure chitin derived from crab shell yielded 65% 4–10nm thick, 16nm wide and 214nm long chitin whiskers (CtNWs) that were 86% crystalline and 81% acetylated. Surface deacetylation of CtNWs...
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