A green route to prepare cellulose acetate particle from ramie fiber

文献类型： 外文期刊

第一作者： Liu, Zhao-Tie

作者： Liu, Zhao-Tie;Fan, Xiushan;Wu, Jin;Zhang, Lili;Song, Liping;Gao, Ziwei;Dong, Wensheng;Xiong, Heping;Peng, Yuande;Tang, Shouwei

作者机构：

关键词： ramie fiber;cellulose acetate particle;pre-swelling;degree of substitution;absorbent

期刊名称：REACTIVE & FUNCTIONAL POLYMERS （ 影响因子：3.975； 五年影响因子：3.914 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： A novel procedure for synthesizing cellulose acetate particles from ramie fiber was developed. The optimum conditions for preparing cellulose acetate (CA) by reaction of ramie fiber with acetic anhydride under an acidic condition were determined. Reaction was carried out in a ratio of ramie fiber to acetic anhydride of 1:6 (w/w) at 80 ℃ for 0.5-1 h. When CA was added to a mixture of water and acetone, CA particles with a well-distributed diameter ranging from 5 to 15 μm were obtained. The difference of the CA particle surface was resulting from different washing methods of CA particles with water or aqueous sodium bicarbonate. The highest degree of substitution (DS) of 2.50 for CA by titration method was achieved. A new adsorbent was prepared from CA, which is an excellent sorption regent for organic waste in water. The scanning electron microscopy (SEM) and particle size distribution results showed that the average size of CA particles is about 5-15 μm in diameter. The thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were used to determine the stability of ramie fiber and CA particle.

分类号： TQ317

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