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Acta Chimica Sinica ›› 2009, Vol. 67 ›› Issue (19): 2159-2164.     Next Articles

Reports

反离子对全氟辛酸盐与高聚物的相互作用的影响

王 晨a   金辰a   严鹏a   肖进新*,a,b    赵孔双*,c   

  1. (a北京分子科学国家实验室 北京大学化学与分子工程学院 北京 100871) (b北京氟乐邦表面活性剂技术研究所 北京 100080) (c北京师范大学化学学院 北京 100875)
  • 投稿日期:2009-03-28 修回日期:2009-05-18 发布日期:2009-06-11
  • 通讯作者: 肖进新 E-mail:xiaojinxin@pku.edu.cn
  • 基金资助:

    国家自然科学基金(No. 20573007;20673014 )

Effect of Counterions on the Interactions between Perfluorooctanoate and Polymers

Wang, Chena        Jin, Chena         Yan, Penga         Xiao, Jinxin*,a,b     Zhao, Kongshuang*,c   

  1. (a Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871) (b Beijing FLUOBON Surfactant Institute, Beijing 100080) (c College of Chemistry, Beijing Normal University, Beijing 100875)
  • Received:2009-03-28 Revised:2009-05-18 Published:2009-06-11
  • Contact: 进新 肖 E-mail:xiaojinxin@pku.edu.cn

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The interactions of ammonium/tetraalkylammonium perfluorooctanoate (C7F15COON(CnH2n＋1)4, n＝0, 1, 2, 3, 4) with polyethylene oxide (PEO, Mw＝20000) and block copolymer (Pluronic F68) were investigated by surface tension and electrical conductivity measurements. It shows that the perfluorooctanoates exhibit significant interactions with PEO only when the counterions are ammonium and tetramethylammonium. However, for F68-C7F15COON(CnH2n＋1)4 mixtures, only tetrabutylammonium perfluorooctanoate shows no significant interaction with F68. It is concluded that the interactions between fluorinated surfactants and the polymers decrease with the increase of the counterion size, but increase with the increase of the hydrophobicity of polymers.

Key words: font-family: "Times New Roman", mso-bidi-font-size: 12.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-fareast-font-family: 宋体">ammonium perfluorooctanoate, tetraalkylammonium perfluorooctanoate, fluorinated surfactant, polyethylene oxide (PEO), block copolymer