Preparation and application of a new cationic starch ether - Starch-methylene dimethylamine hydrochloride

被引：42
作者：
Jiang, Yingxin [1 ]
Ju, Benzhi [1 ]
Zhang, Shufen [1 ]
Yang, Jinzong [1 ]
机构：
[1] Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China
来源：
CARBOHYDRATE POLYMERS | 2010年 / 80卷 / 02期
基金：
国家高技术研究发展计划(863计划);
关键词：
Cationic starch; Etherification; Mannich reaction; Hydroxymethyl dimethylamine hydrochloride; NMR; Flocculation; ANIONIC DYES; DERIVATIVES; FLOCCULANTS; REMOVAL;
D O I：
10.1016/j.carbpol.2009.12.002
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A new cationic starch ether - starch-methylene dimethylamine hydrochloride (SMMAHC) was synthesized by the reaction of corn starch with cationic reagent hydroxymethyl dimethylamine hydrochloride (HMMAHC) using dry process according to Mannich reaction. Reaction parameters (temperature, time, molar ratio of HMMAHC to anhydrous glucose unit (AGU) of starch, and content of HMMAHC) and their effects on the degree of substitution (DS) and reaction efficiency (RE) had been investigated. Under the optimal reaction conditions, SMMAHC with high DS of 0.79% and RE of 96.3% was obtained. The structures of SMMAHC were characterized by C-13-NMR and DEPT-135 spectroscopy. SMMAHC was used as flocculant to treat dyestuff (reactive brilliant red KE-3B) wastewater. The effects of DS and pH on the flocculation were studied and the dyestuff flocculation value reached a maximum of 209 mg/g. (c) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：467 / 473
页数：7
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