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昆明冶金高等专科学校学报 ›› 2014, Vol. 30 ›› Issue (5): 57-60.DOI: 10.3969/j.issn.1009-0479.2014.05.013

• 环境科学与化学工程 • 上一篇    下一篇

β-环糊精改性壳聚糖微球的制备及其性能研究

 郑孝英   

  1. (昆明冶金高等专科学校化工学院,云南 昆明 650033)
  • 收稿日期:2014-10-13 出版日期:2014-10-31 发布日期:2014-10-31
  • 作者简介:郑孝英(1964-),女,山东莱芜人,副教授,工学学士,主要从事化工技术教学与研究。

Study on Preparation and Capacities of the Chitosan Microspheres Modified by β-cyclodextrin

 ZHENG  Xiao-Ying   

  1. (Faculty of Chemical Engineering, Kunming Metallurgy College, Kunming 650033, China)
  • Received:2014-10-13 Online:2014-10-31 Published:2014-10-31

摘要: 采用反相悬浮法,通过环氧氯丙烷交联制备β-环糊精改性交联壳聚糖微球(CDS),用FTIR和SEM进行表征,研究其对甲基橙(MO)的吸附和缓释性能。考察吸附时间、溶液pH值、MO浓度、温度等因素对CDS微球吸附的影响,并与交联壳聚糖(CTS)微球进行比较。结果表明,在pH4.0、交联CTS微球1h可达吸附平衡,而CDS2h达到平衡;吸附数据均符合Freundlich等温方程和二级动力学方程。

关键词: 壳聚糖, β-环糊精, 微球, 吸附

Abstract: The chitosan microspheres immobilized with β-cyclodextrin(CDS) were prepared by reversed-phase suspension, crosslinked with epichlorohydin, and the adsorption capacities of the modified microspheres for methyl orange (MO) were studied. The structure of microspheres was characterized by FTIR and SEM. The effects of adsorption conditions, such as time, pH, temperature, the concentration of MO and the CDS microspheres adsorption efficiency. The experimental results suggested that, at pH4.0, adsorption balance time of cross-linking chitosan microspheres was 1h. CDSof microspheres was 2h.Adsorption data were fitted to the Freundlich isothermal equation and second-order kinetic.

Key words: chitosan, β-cyclodextrin, microspheres, adsorption

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