A one-pot esterification and hydrolysis of cellulose was carried out by treating cellulose fibres with molten oxalic acid dihydrate. Each cellulose oxalate had a free carboxyl content above 1.2 mmol g⁻¹ and an average molecular weight of approximately 40 kDa. Aqueous suspensions of the oxalates were sonicated to prepare cellulose nanocrystals with a gravimetric yield of 80.6%.

中文翻译：

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使用草酸二水合物在无溶剂反应中将纤维素酯化和水解，适用于高产率制备表面官能化纤维素纳米晶体

通过用熔融的草酸二水合物处理纤维素纤维，进行纤维素的一锅法酯化和水解。每一种草酸纤维素的游离羧基含量都高于1.2 mmol g ^-1，平均分子量约为40 kDa。将草酸盐的水悬浮液超声处理以制备重量比为80.6％的纤维素纳米晶体。