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材料研究学报  2008, Vol. 22 Issue (5): 545-549    
  论文 本期目录 | 过刊浏览 |
新型烷基化壳聚糖微球的制备及其吸附性能
辛梅华;李明春;张兴松;邓俊
华侨大学材料科学与工程学院;福建省高校功能材料重点实验室
Preparation of the novel alkylated chitosan microspheres
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华侨大学材料学院
引用本文:

辛梅华; 李明春; 张兴松; 邓俊 . 新型烷基化壳聚糖微球的制备及其吸附性能[J]. 材料研究学报, 2008, 22(5): 545-549.
, , , . Preparation of the novel alkylated chitosan microspheres[J]. Chin J Mater Res, 2008, 22(5): 545-549.

全文: PDF(676 KB)  
摘要: 制备N--烷基化改性壳聚糖微球, 研究了溶液pH值、2,4-二硝基酚浓度、温度和氯化钠含量等因素对其吸附性能的影响. 结果表明,庚醛改性壳聚糖微球具有较好的抗酸碱性能;溶液的pH值对庚醛改性壳聚糖微球吸附性能的影响较大, pH值为3.6、吸附时间为1 h时,对2, 4--二硝基酚的吸附量最大(达到400 mg×g-1);2, 4--二硝基酚浓度对吸附的影响符合Freundlich等温方程;改性壳聚糖微球对2, 4-二硝基酚的吸附性能明显优于未改性的壳聚糖,对浓度为15 mg×L-1的2, 4--二硝基酚溶液的吸附量分别为3.0 mg×g-1和1.45 mg×g-1.
关键词 有机高分子材料烷基化壳聚糖    
Abstract:The chitosan microspheres were prepared by inverse phase suspension method in this study. The chitosan was modified by reducing Schiff`s bases formed from the reaction of n-heptaldehyd and chitosan. The structure of microspheres were characterized by FTIR and SEM. The effects of adsorption conditions, such as time, pH, temperature ,the concentration of 2,4-dinitrophenol and the amount of sodium chlorind on the adsorption were investigated. The experimental result indicated that micropheres were able to adsorb 2,4-dinitrophenol very well. In an aqueous solution at pH 3.6,the adsorption reached to 400 mg•g-1 in 1 hour. The adsorption data of 2,4-dinitrophenol on the modified chitosan microspheres was fitted to the Freundlich isotherm.
Key wordsalkyl chitosan    microspheres    4-dinitrophenol    adsorption
收稿日期: 2007-07-13     
ZTFLH:  O636  
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