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林产化学与工业 ›› 2017, Vol. 37 ›› Issue (4): 45-50.doi: 10.3969/j.issn.0253-2417.2017.04.007

• 研究报告 • 上一篇    下一篇

微水固相法皂荚多糖胶羧甲基化改性

刘彦涛1, 张威伟1, 章伟岸1, 王堃1, 孙达峰2, 蒋建新1   

  1. 1. 北京林业大学 材料科学与技术学院, 林业生物质材料与能源教育部工程研究中心, 北京 100083;
    2. 南京野生植物综合利用研究院, 江苏 南京 210042
  • 收稿日期:2016-11-08 出版日期:2017-08-25 发布日期:2017-09-02
  • 通讯作者: 蒋建新,博士生导师,研究领域为林产化工及生物质能源;E-mail:jiangjx@bjfu.edu.cn E-mail:jiangjx@bjfu.edu.cn
  • 作者简介:刘彦涛(1991-),男,河南鹤壁人,硕士生,主要从事多糖利用研究工作
  • 基金资助:
    国家重点研发计划课题(2016YFD0600803);国家自然科学基金资助项目(31670579)

A Micro Water Solid Phase Method for Carboxylmethylation of Gleditsia sinensis Lam. Galactomannan Gum

LIU Yantao1, ZHANG Weiwei1, ZHANG Wei'an1, WANG Kun1, SUN Dafeng2, JIANG Jianxin1   

  1. 1. College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China;
    2. Nanjing Institute for Comprehensive Utilization of Wild Plants, Nanjing 210042, China
  • Received:2016-11-08 Online:2017-08-25 Published:2017-09-02

摘要: 以氯乙酸(MAC)为醚化试剂,NaOH为碱化试剂,采用微水固相法对皂荚多糖胶(GSG)进行羧甲基化改性,比较了不同NaOH加入量对羧甲基化皂荚多糖胶(CMGSG)取代度、相对分子质量和黏度的影响,并研究了CMGSG对生活污水的絮凝效果。结果表明:当n(GSG):n(NaOH):n(MAC)1:1:1,60℃下反应12 h时,CMGSG取代度(Ds)0.16,相对分子质量1.385×106,此改性多糖胶液用于处理人工模拟生活污水,具有较好的絮凝能力,处理后的污水的最小浊度为20.2 NTU。微水固相法羧甲基化改性可以在无溶剂体系和较少反应试剂条件下达到改性效果。

关键词: 皂荚多糖胶, 羧甲基化, 微水固相改性, 絮凝能力

Abstract: In this study, the micro water solid phase method was used in the carboxymethylation of Gleditsia sinensis Lam. galactomannan (GSG). monochloroacetic acid(MAC) and NaOH were used as the chemical modification reagents to prepare the carboxymethylated G. sinensis galactomannan (CMGSG). The degree of substitution(Ds), Flocculation performance, molecular weight (Mw), viscosity of CMGSG treat with different concentrations of NaOH were investigated. The results showed that when n(GSG):n(NaOH):n(MAC)=1:1:1, the reaction temperature 60℃ and reaction time 12 h,the Ds of the product reached 0.16,with the molecular weight of 1.385×106. CMGSG purified the synthetic wastewater with the minimum turbidity of 20.2 NTU, indicating of a better flocculation performance. The micro water solid phase method had a positive effect on modification of GSG in solvent free system and less reaction reagent.

Key words: Gleditsia sinensis Lam.galactomannan, carboxymethylation, microwater solid phase modification, flocculation performance

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