Xiaozheng Sun*, Qiang He, Yu Yang
Journal of Renewable Materials, Vol.8, No.4, pp. 447-460, 2020, DOI:10.32604/jrm.2020.09671
Abstract Agricultural waste straw is the renewable resource with the highest
annual yield in the world. In value-added applications of agricultural waste, dicarboxyl cellulose nanocrystals (DCCs) are prepared from rice, wheat, and corn
straw by sequential periodate-chlorite oxidation. In this study, DCCs from rice,
wheat, and corn straw were characterized by transmission electron microscopy
(TEM), Fourier transform infrared spectrometer, X-ray diffractometer (XRD),
and thermal gravimetric analysis (TGA). The carboxyl content of the DCCs
was also investigated. XRD results show that the crystallinity index decreased
after sequential periodate-chlorite oxidation; however, the cellulose I structure
was maintained. TEM results show that rod-shaped DCCs… More >
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