应用化学 ›› 1998, Vol. 0 ›› Issue (2): 103-105.

• 研究论文 • 上一篇    下一篇

含双键大孔径苯乙烯-二乙烯基苯微球的合成与表征

袁青, 阚成友, 刘伟良, 孔祥正   

  1. 山东大学化学系 济南250100
  • 收稿日期:1997-07-03 修回日期:1998-01-12 出版日期:1998-04-10 发布日期:1998-04-10
  • 基金资助:
    国家教委留学服务中心回国人员基金

Synthesis and Characterization of Macroporous Microbeads of Poly(styrene-co-divinylbenzene) with Residual Double Bonds

Yuan Qing, Kan Chengyou, Liu Weiliang, Kong Xiangzheng   

  1. Department of Chemistry, Shandong University, Jinan 250100
  • Received:1997-07-03 Revised:1998-01-12 Published:1998-04-10 Online:1998-04-10

摘要: 用悬浮聚合法制备的大孔径苯乙烯(St)和二乙烯基苯(DVB)共聚树脂微球在离子交换树 脂和高分子催化剂方面得到了广泛的应用,所用致孔剂可以是聚合物的良溶剂、沉淀剂、线型 聚合物等,不同类型的致孔剂可以得到不同孔结构的交联树脂[1].St-DVB共聚体系中部分 DVB分子只有一个双键参与共聚,剩余双键仍可以和其它功能性单体反应[2],从而为大孔径P(St-DVB)树脂的功能化开辟了新途径.此类树脂的制备中使用非溶剂以及良溶剂和非溶剂 的复合体系较多,本文以线型聚苯乙烯-甲苯为复合致孔剂(PA),用悬浮聚合法合成了大孔径 P(St-DVB)微球,探讨了成孔条件,对产物进行了表征.

关键词: 苯乙烯-二乙烯基苯共聚树脂, 悬浮聚合, 树脂微球, 复合致孔剂, 孔结构

Abstract: Using toluene solution of linear polystyrene as porofor, the macroporous microbeads of poly(styrene-co-divinylbenzene) were prepared by suspension polymerization. Their pore volume and pore size distributions were measured by mercury porosimetry and bead textures were observed by scanning electron microscope. The influences of porofor composition, porofor amount and DVB content upon pore volume and pore size distribution have been investigated. The presence of the residual double bonds in the microbeads was confirmed by FT Infred-red spectra. It is concluded that about 40% of the secondary double bonds were remained active after polymerization.

Key words: poly(styrene-co-divinylbenzene), suspension polymerization, composite porofor, resin microbead, pore texture