Abstract
Dialdehyde nanocellulose (DANC) was prepared by periodate selective oxidation of secondary hydroxyl group of nanocrystalline cellulose (NCC). NCC and DANC samples were characterized by FT-IR, XRD and conductimetric titration. Aldehyde groups were introduced during the process of sodium periodate oxidation, which was confirmed by the FT-IR spectra. The aldehyde group content increased with the increase of sodium periodate. The crystallinity index (CrI) and crystallite size of the samples were continuously decreased with the increase of the oxidant.
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