A light-colored hydroxypropyl sulfonated alkali lignin for utilization as a dye dispersant

被引：37
作者：
Qin, Yanlin [1 ]
Mo, Wenjie [1 ]
Yu, Lixuan [1 ]
Yang, Dongjie [1 ,2 ]
Qiu, Xueqing [1 ,2 ]
机构：
[1] S China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Guangdong, Peoples R China
[2] S China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China
来源：
HOLZFORSCHUNG | 2016年 / 70卷 / 02期
基金：
中国国家自然科学基金;
关键词：
alkali lignin; dispersity; hydroxypropyl sulfonation; lignosulfonates; staining; whitening; AQUEOUS DISPERSIONS; LIGNOSULFONATE; PERFORMANCE; STABILITY; MECHANISM; SYSTEMS; LACCASE; WATER; WOOD; COAL;
D O I：
10.1515/hf-2015-0009
中图分类号：
S7 [林业];
学科分类号：
0829 ; 0907 ;
摘要：
A light-colored hydroxypropyl sulfonated alkali lignin (HSAL) was synthesized based on pine alkali lignin (AL) by grafted-sulfonation and crosslinking reaction processes. The reactions were evaluated by gel-permeation chromatography (GPC), infrared (IR) and proton nuclear magnetic resonance (H-1-NMR) spectroscopy. The sulfonic group content and the molecular weight (M-w) of HSAL significantly increased, while the phenolic hydroxyl groups diminished by around 80% compared to AL. The color of HSAL turned to light yellow compared to the dark brown color of AL, that is, it stained less the fiber. The dispersity, heat stability, and dye uptake of dye bath with HSAL was significantly improved compared to sodium lignosulfonate, sulfomethy-lated AL, and dispersants of the naphthalene series.
引用
收藏
页码：109 / 116
页数：8
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