丙烯酸表面修饰聚丙烯滤芯棉的制备和吸附性能*

材料研究学报

2013, Vol. 27

Issue (1): 103-107

研究论文

本期目录 | 过刊浏览

丙烯酸表面修饰聚丙烯滤芯棉的制备和吸附性能*

李爱雪赵常礼刘长风朱晓薇

(沈阳化工大学材料科学与工程学院沈阳 110142)

Preparation and Adsorption Behaviors for Cd²⁺of Surface-modified Polypropylene Cotton with Acrylic Acid

LI Aixue ZHAO Changli^** LIU Changfeng ZHU Xiaowei

(School of Material Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142)

引用本文:

李爱雪赵常礼刘长风朱晓薇. 丙烯酸表面修饰聚丙烯滤芯棉的制备和吸附性能*[J]. 材料研究学报, 2013, 27(1): 103-107.
LI Aixue ZHAO Changli** U Changfeng ZHU Xiaowei. Preparation and Adsorption Behaviors for Cd²⁺of Surface-modified Polypropylene Cotton with Acrylic Acid[J]. Chinese Journal of Materials Research, 2013, 27(1): 103-107.

全文: PDF(4568 KB)

摘要: 采用紫外光接枝法, 以丙烯酸(AA)为功能单体, N, N-亚甲基双丙烯酰胺(MBA)为交联剂, 在聚丙烯(PP)滤芯棉表面进行交联接枝共聚, 制备出交联接枝率为220%的丙烯酸表面修饰PP棉。用红外光谱对交联接枝共聚物的结构进行了表征。其最佳工艺条件为引发剂二苯甲酮(BP)用量为0.50 g/100g AA, MBA用量为5.0 g/100 g AA, AA与PP质量比为5∶1, 光照时间为25 min。采用平衡吸附法研究了丙烯酸表面修饰PP棉对重金属Cd²⁺的吸附性能。结果表明, 当Cd²⁺初始质量浓度低于50 mg·L^-1时, 丙烯酸修饰PP棉对Cd²⁺的吸附率可达到95 %以上。在研究的浓度范围内, 丙烯酸修饰PP棉对Cd²⁺的吸附不符合Langmuir和Freundlich模型。

关键词 ：有机高分子材料, 交联接枝, 聚丙烯, 镉离子, 吸附

Abstract：ABSTRACT Surface-modified polypropylene (PP) cotton with acrylic acid (AA) was prepared by cross-linked grafting copolymerization of AA onto PP filter cotton, using AA as a functional monomer and N, N'-Methylenebisacrylamide (MBA) as a cross-linked agent in the present of UV light, and the cross-linked grafting ratio of PP cotton can reach 220%. The optimum process conditions is: benzophenone (BP) content 0.50 g/100 g AA, MBA content 5.0 g/100 g AA, the mass ratio of AA to PP 5 : 1, and the irradiation time 25 min. The structure of surface-modified PP cotton with AA was characterized with FT-IR. The adsorption behaviors for Cd²⁺ were investigated. The experimental results show that surface-modified PP cotton with AA has a good adsorption capacity and the adsorption ratio reached above 95% when Cd²⁺ concentration was less than 50 mg·L^-1. The adsorption equilibrium data of Cd²⁺ do not obey Langmuir model and Freundlich model in the investigated concentration range.

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