Preparation and Evaluation of Carboxymethylated Lignin as Dispersant for Aqueous Graphite Suspension Using Turbiscan Lab Analyzer

被引：52

作者：

Gan, Linhuo ^{[1
,2
,3
]}

Zhou, Mingsong ^{[1
,2
]}

Yang, Dongjie ^{[1
,2
]}

Qiu, Xueqing ^{[1
,2
]}

机构：

[1] S China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510641, Guangdong, Peoples R China

[2] S China Univ Technol, Guangdong Prov Lab Green Chem Technol, Guangzhou 510641, Guangdong, Peoples R China

[3] Huaqiao Univ, Coll Chem Engn, Xiamen, Peoples R China

来源：

JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY | 2013年 / 34卷 / 05期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

Carboxymethylation; dispersion stability; graphite suspension; wheat straw alkali lignin; WHEAT-STRAW; FLOCCULATION; PERFORMANCE; OXIDATION; AGENT;

D O I：

10.1080/01932691.2012.686248

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Carboxymethylated lignin (CML) was prepared from wheat straw alkali lignin (WAL) via carboxymethylation modification. The characterizations using FTIR, C-13 NMR, and (HC)-H-1-C-13 HSQC NMR suggest that carboxyl groups are introduced into WAL structure successfully and there are two different active sites substituted by carboxymethyl groups. Moreover, the dispersion efficiency of CML was evaluated using the Turbiscan Lab analyzer. Effects of CML dosage and suspension pH on the dispersion stability of aqueous graphite suspension were investigated. The result shows that the dispersion stability of aqueous graphite suspension prepared with CML of 1.0% dosage at suspension pH 6.7 is obviously improved. <graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ldis_a_686248_o_uf0001.gif"></graphic

引用

页码：644 / 650

页数：7

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