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Esterified cellulose nanocrystals (E-CNCs) are cellulose derivatives that could be applied in biomedical and chemical industries. E-CNCs were prepared with cellulose pulp using a mixture of 17.5M acetic and 18.4M sulfuric acid with the aid of ultrasonication. The effects of esterification time (3–7h), ultrasonication time (with a frequency of 40kHz, 0 to 6h) and temperature (68–75°C) on the yield...
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