纺织学报 ›› 2016, Vol. 37 ›› Issue (4): 1-6.

• 纤维材料 •    下一篇

羧基化改性静电纺天然棕色棉纤维素膜的金属铜离子吸附性能

  

  • 收稿日期:2014-10-11 修回日期:2015-06-30 出版日期:2016-04-15 发布日期:2016-04-07

Cu(II) adsorption performance of carboxylation-modified electrospun cellulosic film from naturally brown cotton

  • Received:2014-10-11 Revised:2015-06-30 Online:2016-04-15 Published:2016-04-07

摘要:

为探究静电纺纤维素膜对重金属离子的吸附性能,在用静电纺成功制备天然棕色棉纤维素膜的基础上,进行了Cu2+吸附性能的研究。结果表明:静电纺纤维素膜材料和原棉相比具有很高的Cu2+吸附能力,在不同pH值条件下可分别达到原棉的3~5倍;静电纺纤维素膜经羧基化改性后,可极大提高Cu2+的吸附容量,在此条件下可分别达到原棉的3~5倍;静电纺纤维素膜经羧基化改性后,可极大提高Cu2+的吸附容量,在此条件下静电纺纤维素膜吸附量可高达约250mg/g;羧基化改性静电纺纤维素膜对Cu2+的吸附具有快速性,80%以上的吸附量可以在16 s左右完成;羧基化改性静纺纤维素膜对Cu2+的吸附具有饱和性和单分子层吸附特性;制备的羧基化静电纺纤维素膜的理论单层饱和吸附量为526.3 mg/g,Langmuir特征常数为7.133×10-6 L/mg。

关键词: 天然棕色棉, 静电纺纤维素膜, 金属离子吸附, 羧基化改性, 吸附特性

Abstract:

To investigate the adsorption of electrospun fiber film to heavy metal ions, the Cu (II) adsorption performance on such material was stdied based on successful preparation of the electrospun fiber film naturally brown cotton. The electrospun fiber film material had much higher adsorption volume of Cu(II) than that of the correspondent raw brown cotton, which was 3~5 times of that of raw cotton material under different pH conditions. After carboxylation modification, the electrospun fiber film could increase its Cu(II) adsorption volume greatly. Under the conditions presented in the paper, the adsorption volume could be as high as about 250 mg Cu(II)/1g electrospun fiber film. Carboxylation modified electrospun fiber film had high rate adsorption performance, and at least 80% of the total adsorption volume could be finished in 16s. The adsorption of Cu(II) on carboxylation modified electrospun fiber film is in the mode of single molecular layer adsorption and had adsorption saturability. The theoretical maximum adsorption volume for prepared material was 526.3 mg Cu(II) /1g electrospun fiber film with a Langmuir constant of 7.133×10-6 L/mg.

Key words: naturally brown cotton, electrospun ecllulosic film, metal ion adsorption, carboxylation modification, adsorption performance.

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[2] 王佳 徐秀娟 马明波 周文龙. 天然棕色棉的抗菌性能[J]. 纺织学报, 2017, 38(03): 1-5.
[3] 罗少宏 马明波 周文龙. 碱溶液对天然棕色棉色素提取效果及成分的影响[J]. 纺织学报, 2014, 35(7): 18-0.
[4] 马明波, 李荣霞, 唐志荣, 吴世华, 周文龙. 天然棕色棉色素的液相色谱分离[J]. 纺织学报, 2012, 33(7): 10-14.
[5] 马明波 李荣霞 李海祥 唐志荣 吴世华 周文龙. 天然棕色棉色素与白色棉棉籽壳色素成分的比较[J]. 纺织学报, 2012, 33(1): 1-5.
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