华南理工大学学报(自然科学版) ›› 2006, Vol. 34 ›› Issue (8): 37-40,65.

• 化学化工 • 上一篇    下一篇

负载对苯二酚的多孔聚合物微球的缓释性能

李璐 文秀芳 皮丕辉 程江 杨卓如   

  1. 华南理工大学 化工与能源学院,广东 广州 510640
  • 收稿日期:2005-09-07 出版日期:2006-08-25 发布日期:2006-08-25
  • 通信作者: 李璐(1978-),女,博士生,主要从事功能型多孔载体的研究 E-mail:lulu_lee@sinal00.com
  • 作者简介:李璐(1978-),女,博士生,主要从事功能型多孔载体的研究
  • 基金资助:

    广东省自然科学基金资助项目(05006556)

Release-Controlling Performance of Porous Polymer M icrosphere Adsorbing Hydroquinone

Li Lu  Wen Xiu-fang  Pi Pi-hui  Cheng Jiang  rang Zhuo-ru   

  1. Schol of Chemical and Energy Engineering,South China Univ.of Tech.,Guangzhou 5 10640, Guangdong,China
  • Received:2005-09-07 Online:2006-08-25 Published:2006-08-25
  • Contact: 李璐(1978-),女,博士生,主要从事功能型多孔载体的研究 E-mail:lulu_lee@sinal00.com
  • About author:李璐(1978-),女,博士生,主要从事功能型多孔载体的研究
  • Supported by:

    广东省自然科学基金资助项目(05006556)

摘要: 用改进的二步种子溶胀法制得粒径在15 m内的多孔聚苯乙烯-二乙烯苯(PSt.DVB)微球,以对苯二酚为模型组分,考察其在多孔聚合物微球上的吸附和释放性能,重点研究了多孔聚合物微球的粒径、孔径和活性物负载量对微球释放速度的影响.结果表明:随着微球粒径的减小和活性物负载量的增大,对苯二酚呈现更快的释放速度;孔径对对苯二酚的释放行为影响不大;在相当长的时间内对苯二酚浓度变化不大,说明制得的多孔聚合物微球具有良好的缓释作用.

关键词: 多孔聚合物微球, 负载, 活性物, 对苯二酚, 缓释

Abstract:

Poly(styrene-divinylbenzene)(PSt-DVB)porous microspheres with a diameter of less than 1 5μm were prepared by means of the modified two-step seed swelling polymerization.Then,the adsorption and release of hy-droquinone on the produced porous microspheres were investigated an d the effects of microsphere size.pore diame-ter and adsorption capacity on the release rate were investigated in detail.Th e results indicate that both the de-crease in microsphere size and the increase in adsorption capacity result in a high release speed of hydroquinone from the microspheres,while the pore diameter has no obvious efect on the release of hydroquinone.Moreover,the concentration of hydroquinone changes little in a long period which shows that the produced PSt-DVB por0us mi-crospheres are of excellent release-controlling performance.

Key words: porous polymer microsphere, adsorption, active, hydroquinone, release controUing