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林产化学与工业 ›› 2009, Vol. 29 ›› Issue (3): 107-110.

• 研究报告 • 上一篇    下一篇

碱木质素接枝丙烯酸钠共聚物的分离初探

王佰亮1, 张卫英1,2, 李晓1, 程贤甦2   

  1. 1. 福州大学化学化工学院, 福建 福州 350002;2. 福州大学 材料科学与工程学院, 福建 福州 350002
  • 收稿日期:2008-04-22 修回日期:1900-01-01 出版日期:2009-06-30 发布日期:2009-06-30
  • 通讯作者: 张卫英,副教授,硕士生导师,从事高分子材料功能化改性研究;E-mail:wyzhang@fzu.edu.cn。

Separation of Alkali-lignin Grafted Sodium Acrylate Copolymers

WANG Bai-liang1, ZHANG Wei-ying1,2, LI Xiao1, CHENG Xian-su2   

  1. 1. College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China;2. College of Material Science and Technology, Fuzhou University, Fuzhou 350002, China
  • Received:2008-04-22 Revised:1900-01-01 Online:2009-06-30 Published:2009-06-30

摘要: 以K2S2O8-Na2S2O3复合体系引发碱木质素和丙烯酸钠接枝共聚,研究了碱木质素接枝丙烯酸钠共聚物的分离方法。结果表明,采用酸析离心工艺能有效地分离接枝共聚物,而且在中和度 105%~115%、转速 6000r/min 下,离心 9min 即可达到均聚物与共聚物的良好分离,红外光谱证实分离产物为接枝共聚物。

关键词: 碱木质素, 接枝共聚, 分离方法, 丙烯酸钠

Abstract: Grafted copolymerization of alkali-lignin with sodium acrylate was carried out using K2S2O8 and Na2S2O3 as initiator, and method of separating alkali-ligningrafted copolymers was investigated. The results showed that acidification followed by centrifugation could well separate out thegrafted copolymers from the crude products. At neutralization degree of 105%-115% and centrifugation rate of 6000r/min, the separation could be done in 9min. Using the FT-IR spectra, the separated product was verified to begrafted copolymers.

Key words: alkali-lignin, graft copolymerization, separation method, sodium acrylate

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