高等学校化学学报

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (9): 1890.

• 研究论文 • 上一篇    下一篇

β-环糊精与辛基酚聚氧乙烯醚混合体系的结晶行为

陈清瑞1, 杨猛1, 刘丽2, 姜国庆1, 张丹3, 刘凤岐1   

  1. 1. 吉林大学化学学院, 长春 130012;
    2. 长春工业大学化学工程学院, 长春 130012;
    3. 抚顺市高新技术产业开发区管理委员会, 抚顺 113004
  • 收稿日期:2009-11-26 出版日期:2010-09-10 发布日期:2010-09-10
  • 通讯作者: 刘凤岐, 男, 博士, 教授, 博士生导师, 主要从事高分子凝聚态物理和功能材料研究. E-mail: liufengqi@jlu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号： 20274014)资助.

Crystallization Behavior of the Mixed Systems of β-Cyclodextrin and Polyoxyethylene Octyl Phenyl Ethers

CHEN Qing-Rui1, YANG Meng1, LIU Li2, JIANG Guo-Qing1, ZHANG Dan3, LIU Feng-Qi1*   

  1. 1. College of Chemistry, Jilin University, Changchun 130021, China;
    2. College of Chemical Engineering, Changchun University of Technology, Changchun 130012, China;
    3. High Technology Industry District Management Committee, Fushun 113004, China
  • Received:2009-11-26 Online:2010-09-10 Published:2010-09-10
  • Contact: LIU Feng-Qi. E-mail: liufengqi@jlu.edu.cn
  • Supported by:

    国家自然科学基金(批准号： 20274014)资助.

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摘要： 研究了水中β-环糊精(β-CD)与非离子表面活性剂辛基酚聚氧乙烯醚(OP-n, n为乙氧基单元数目)混合分散体系的结晶行为. 分别采用透明度法、硫氰酸钴铵显色法得到混合体系中β-CD与OP-n的包结计量比为2∶1. 用UV-Vis光谱和重量分析法定量表征了OP-n和β-CD在混合体系中液相与固相的分配情况. 结果表明, OP-n的亲水链段对相分离起阻碍作用, 亲水性越强, 阻碍作用越强; 而β-CD则对相分离起促进作用. 偏光显微镜测试的结果表明, 混合体系的结晶形貌为粉末状和树枝状. 用XRD表征了包结复合物的结晶结构, 证明β-CD与OP-n在晶体中通过氢键作用组装为隧道型结构.

关键词: 环糊精, 辛基酚聚氧乙烯醚, 包结计量比, 晶体结构, 相分配

Abstract: The crystallization behavior of the nonionic surfactants polyoxyethylene octyl phenyl ethers(OP-n, n is number of oxyethylene units) and β-cyclodextrin(β-CD) in aqueous solutions were investigated. The inclusion complex of 2∶1 stoichiometry between β-CD and OP-n was determined via the optical transparency method as well as the color method. The quantitative distribution of β-CD and OP-n in the liquid phase and solid phase were determined by UV-Vis spectrum and Gravimetric analysis, respectively. The results indicated that β-CD could promote the phase separation and whereas OP-n surfactants' hydrophilic part hinder the phase separation. Moreover, the stronger the hydrophilicity of OP-n surfactants, the more remarkable the effects mentioned above. The crystal morphologies of mixed systems were powders and branches, which were characte-rized by polarized light microscope. The crystalline structure was further characterized by X-ray diffraction(XRD), and the results revealed that these inclusion complexes presented a channel-type structure by intermolecular hydrogen bonding.

Key words: Cyclodextrin, Polyoxyethylene octyl phenyl ether, Inclusion stoichiometry, Crystalline structure, Phase distribution

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