Esterification and hydrolysis of cellulose using oxalic acid dihydrate in a solvent-free reaction suitable for preparation of surface-functionalised cellulose nanocrystals with high yield

被引：89
|
作者：
Li, D. [1 ]
Henschen, J. [1 ]
Ek, M. [1 ]
机构：
[1] KTH Royal Inst Technol, Sch Chem Sci & Engn, Dept Fibre & Polymer Technol, Div Wood Chem & Pulp Technol, Stockholm, Sweden
来源：
GREEN CHEMISTRY | 2017年 / 19卷 / 23期
关键词：
MICROFIBRILLATED CELLULOSE; SUSPENSIONS; NANOFIBERS; OXIDATION;
D O I：
10.1039/c7gc02489d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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%.
引用
收藏
页码：5564 / 5567
页数：4
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