木质素磺酸盐接枝共聚物的合成及工艺优化

doi:10.16085/j.issn.1000-6613.2017-1304

化工进展 ›› 2018, Vol. 37 ›› Issue (05): 1962-1967.DOI: 10.16085/j.issn.1000-6613.2017-1304

木质素磺酸盐接枝共聚物的合成及工艺优化

郭睿, 宋博, 郭煜, 李云鹏, 土瑞香, 王映月, 马兰

陕西科技大学, 教育部轻化工助剂化学与技术重点实验室, 陕西西安 710021

收稿日期:2017-06-28 修回日期:2017-07-12 出版日期:2018-05-05 发布日期:2018-05-05
通讯作者: 郭睿(1959-),男,硕士,教授,主要研究各种助剂合成及应用。
作者简介:郭睿(1959-),男,硕士,教授,主要研究各种助剂合成及应用。E-mail:guor@sust.edu.cn。
基金资助:
陕西省工业科技攻关项目（2016GY-146）。

Synthesis and process optimization of lignosulfonate graft copolymer

GUO Rui, SONG Bo, GUO Yu, LI Yunpeng, TU Ruixiang, WANG Yingyue, MA Lan

MOE Key Laboratory of the Chemistry and Technology of Light Auxiliary Chemicals, Shaanxi University of Science and Technology, Xi'an 710021, Shaanxi, China

Received:2017-06-28 Revised:2017-07-12 Online:2018-05-05 Published:2018-05-05

摘要/Abstract

摘要： 以木质素磺酸盐、甲基丙烯磺酸钠和烯丙基聚氧乙烯醚为原料，过硫酸钾为引发剂，通过水溶液聚合法合成了木质素磺酸盐的三元接枝共聚物（LS-SMAS-APEG）。通过傅里叶红外光谱仪（FTIR）、环境扫描电镜（ESEM）对共聚物进行了结构表征。考察了单因素：甲基丙烯磺酸钠用量、烯丙基聚氧乙烯醚用量、聚合温度、聚合时间和引发剂用量对LS-SMAS-APEG表观黏度的影响。并在单因素实验的基础上，利用正交实验优化了木质素磺酸盐接枝共聚的工艺条件。得到聚合的最佳工艺参数为：甲基丙烯磺酸钠用量为20%，烯丙基聚氧乙烯醚用量为35%，反应温度75℃，反应时间4h，引发剂用量为木质素磺酸盐用量的4%。并将产物用于神华煤制浆实验，通过探讨LS-SMAS-APEG特性黏数、浆体的表观黏度和zeta电位测试对LS-SMAS-APEG的分散性能的影响。结果表明，聚合物对神华煤的降黏、稳定和分散作用良好。

关键词: 木质素磺酸盐, 水溶液聚合, 正交实验, 水煤浆

Abstract: Using the lignosulfonate,the sodium methacrylate and the allyl polyoxyethylene ether as raw materials,the potassium persulfate as initiator,the lignosulfonate graft copolymer (LS-SMAS-APEG)was synthesized by aqueous solution polymerization. The chemical structure of the product was characterized by infrared spectrum (FTIR)and environmental scanning electron microscope (ESEM). The effects of monomer dosage,temperature,reaction time and K₂S₂O₈ dosage on apparent viscosity were investigated. Furthermore,based on the single factor experiment,the technical parameters of grafted lignosulfonate were optimized by using the orthogonal test. The results indicated that the optimal conditions for the preparation of grafted lignosulfonate were as follows:reaction temperature 75℃, reaction time 4h,initiator dosage 4%,the sodium octyl methane sulfonate dosage 20%,the allyl polyoxyethylene ether dosage 35%. And the effect of the apparent viscosity of the slurry intrinsic viscosity and zeta potential test on the LS-SMAS-APEG dispersant was investidagted. The test results showed the effectiveness of viscosity reduction,dispersion and stabilization to the Shenhua coal.

Key words: lignin sulfonate, aqueous solution polymerization, orthogonal experiment, coal water slurry

中图分类号:

TQ425.23

郭睿, 宋博, 郭煜, 李云鹏, 土瑞香, 王映月, 马兰. 木质素磺酸盐接枝共聚物的合成及工艺优化[J]. 化工进展, 2018, 37(05): 1962-1967.

GUO Rui, SONG Bo, GUO Yu, LI Yunpeng, TU Ruixiang, WANG Yingyue, MA Lan. Synthesis and process optimization of lignosulfonate graft copolymer[J]. Chemical Industry and Engineering Progress, 2018, 37(05): 1962-1967.

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木质素磺酸盐接枝共聚物的合成及工艺优化

Synthesis and process optimization of lignosulfonate graft copolymer

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