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Acta Chimica Sinica ›› 2005, Vol. 63 ›› Issue (14): 1281-1287. Previous Articles     Next Articles

Original Articles

正离子Gemini表面活性剂/负离子聚电解质相互作用的研究

皮瑛瑛，尚亚卓，刘洪来*，胡英   

  1. (华东理工大学化学系 国家重点化学工程联合实验室 上海 200237)
  • 投稿日期:2004-10-14 修回日期:2005-03-28 发布日期:2010-12-10
  • 通讯作者: 刘洪来

Study on the Interaction between Cationic Gemini Surfactant and Anionic Polyelectrolyte

PI Ying-Ying, SHANG Ya-Zhuo, LIU Hong-Lai*, HU Ying   

  1. (State Key Laboratory of Chemical Engineering, Department of Chemistry, East China University of Science and Technology, Shanghai 200237)
  • Received:2004-10-14 Revised:2005-03-28 Published:2010-12-10
  • Contact: LIU Hong-Lai

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The interactions between cationic gemini surfactant hexylene-1,6-bis(dodecyldimethylammonium) dibromide (C12H25(CH3)2N-(CH2)6-N(CH3)2C12H25•2Br) (12-6-12•2Br－) and oppositely charged polyelectrolyte poly(arylic acid, sodium salt) (NaPA) have been studied by using fluorescence and conductivity measurements. It was shown that micelle-like aggregate or complex could be formed between the gemini surfactant (12-6-12•2Br－) and polyelectrolyte NaPA due to the static electric interaction. Comparing the fluorescence spectrum of system of dodecyltrimethylammonium bromide (DTMAB) with NaPA and that of system of gemini surfactant (12-6-12•2Br－) and NaPA, it could be found that the interaction between gemini surfactant (12-6-12•2Br－) and NaPA was stronger than that between DTMAB and NaPA. It could be also found that the salt and alcohol are favorable to the formation of the micelle-like aggregate and the re-dissolvation of the complex.

Key words: gemini surfactant, polyelectrolyte, molecular interaction, micropolarity, micelle