高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (4): 858.doi: 10.7503/cjcu20131037

• 高分子化学 • 上一篇    下一篇

磁性PS-DEA树脂的制备与表征

路翠萍, 马应霞, 王茹娟, 陈颖, 杜雪岩()   

  1. 兰州理工大学材料科学与工程学院, 省部共建有色金属先进加工与再利用国家重点实验室, 兰州 730050
  • 收稿日期:2013-10-24 出版日期:2014-04-10 发布日期:2014-03-11
  • 作者简介:联系人简介: 杜雪岩, 男, 博士, 教授, 主要从事磁性纳米复合材料的制备、 表征及性能研究. E-mail: duxy@lut.cn
  • 基金资助:
    国家自然科学基金(批准号: 51061009)、 甘肃省高校基本科研项目(批准号: 13220)和甘肃省有色金属新材料省部共建国家重点实验室开放基金(批准号: SKL1315)资助

Preparation and Characterization of Magnetic PS-DEA Resins

LU Cuiping, MA Yingxia, WANG Rujuan, CHEN Ying, DU Xueyan*()   

  1. School of Materials & Science, State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
  • Received:2013-10-24 Online:2014-04-10 Published:2014-03-11
  • Contact: DU Xueyan E-mail:duxy@lut.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.51061009), the Basic Scientific Research Project in Colleges and Universities in Gansu Province, China(No.13220) and the Opening Foundation of State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, China(No.SKL1315)

摘要:

利用二乙醇胺(DEA)对氯甲基化聚苯乙烯基树脂(PS-Cl)进行表面改性, 制备了亲水性的PS-DEA树脂, 然后以FeCl3·6H2O和FeSO4·7H2O为前驱体通过共沉淀法原位复合制备了磁性PS-DEA树脂. 表征了磁性PS-DEA样品的形貌、 结构以及磁性能, 研究了PS-DEA和磁性PS-DEA对水溶液中Hg(Ⅱ)的吸附性能. 结果表明, 含有Fe3O4的磁性PS-DEA树脂的比饱和磁化强度(Ms)为0.92 A·m2/kg, 磁性树脂中Fe3O4所占的质量分数为1.7%. 用Langmuir等温模型拟合了PS-DEA和磁性PS-DEA对水溶液中Hg(Ⅱ)的吸附数据, 计算得到最大吸附量分别为320.51和352.11 mg/g, 这表明磁性纳米粒子的引入有利于提高树脂的吸附性能, 这种磁性树脂有望作为吸附剂用于水处理领域.

关键词: 二乙醇胺, 氯甲基化聚苯乙烯基树脂, 共沉淀法, 磁性PS-DEA

Abstract:

The hydrophilic PS-DEA resins were prepared by diethanolamine(DEA) for the surface modifier of chloromethylation polystyrene resins(PS-Cl). In-situ magnetic PS-DEA composites were prepared by co-precipitation method with FeCl3·6H2O and FeSO4·7H2O as precursors. The morphology, structure and magnetic properties of the magnetic PS-DEA samples were characterized. The adsorption properties of PS-DEA and magnetic PS-DEA for Hg(Ⅱ) in aqueous solution were investigated by batch methods. The results showed that the magnetic PS-DEA with magnetic Fe3O4 were prepared. The saturation magnetization(Ms) of the magnetic PS-DEA was 0.92 A·m2/kg, and the Fe3O4 contents of the magnetic PS-DEA were 1.7%(mass fraction). The adsorption data of PS-DEA and magnetic PS-DEA for Hg(Ⅱ) in aqueous solution were fitted using Langmuir isothermal model, respectively. The maximum adsorption capacities of PS-DEA and magnetic PS-DEA for Hg(Ⅱ) were 320.51 and 352.11 mg/g, respectively, which demonstrated that the adsorption property of the PS-DEA resin was improved after introducing the magnetic nanoparticles. The obtained magnetic PS-DEA could be used as a promising magnetic adsorbent in waste water treatment.

Key words: Diethanolamine, Chloromethylation polystyrene resin, Co-precipitation method, Magnetic PS-DEA

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