Acta Phys. -Chim. Sin. ›› 2012, Vol. 28 ›› Issue (06): 1411-1417.doi: 10.3866/PKU.WHXB201203262

• SOFT MATTER • Previous Articles     Next Articles

Lamellar Liquid Crystalline Phase Formed by Triblock Copolymer L64 in 1-Butyl-3-methylimidazolium Tetrafluoroborate Ionic Liquid

ZHAO Xue-Yan1, CAO Yu-Rong2, CAO Gui-Rong1, XIAO Rui-Jie1   

  1. 1. Department of Fundamental Courses, Institute of Disaster Prevention, Langfang 065201, Hebei Province, P. R. China;
    2. Department of Information, China Cleaning Industry Association, Beijing 100044, P. R. China
  • Received:2012-02-07 Revised:2012-03-23 Published:2012-05-17
  • Contact: ZHAO Xue-Yan E-mail:xyzhao@mail.sdu.edu.cn
  • Supported by:

    The project was supported by the Teachers' Scientific Research Fund of China Earthquake Administration (20110123) and Fundamental Research Funds for the Central Universities for Innovative Research Team, China (ZY20110103).

Abstract: The aggregation behavior of the triblock copolymer poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (L64, PEO13PPO30PEO13) in the room-temperature ionic liquid 1-butyl-3- methylimidazolium tetrafluoroborate ([Bmim] [BF4]) was investigated using polarized optical microscopy (POM), small-angle X-ray scattering (SAXS), and Fourier transform infrared (FTIR) spectroscopy. The phase diagram of the L64/[Bmim] [BF4] system is described, where the micellar phase (L1), a mixture of lamellar liquid crystalline (Lα) and L1 phases, the Lα phase, a mixture of Lα and reverse micellar (L2) phases, and the L2 phase are sequentially mapped. Among these phases, the behavior of the Lα phase formed in the L64/[Bmim][BF4] system in the L64 concentration region of 40%-65% (w, mass fraction) was focused on because it forms highly-ordered structures. The Maltese cross texture was found through POM characterization, and was typical for the Lα phase. The SAXS patterns further confirm the formation of the Lα phase. In addition,

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  • Acta Phys. -Chim. Sin. ›› 2012, Vol. 28 ›› Issue (06): 1411-1417.doi: 10.3866/PKU.WHXB201203262

    • SOFT MATTER • Previous Articles     Next Articles

    Lamellar Liquid Crystalline Phase Formed by Triblock Copolymer L64 in 1-Butyl-3-methylimidazolium Tetrafluoroborate Ionic Liquid

    ZHAO Xue-Yan1, CAO Yu-Rong2, CAO Gui-Rong1, XIAO Rui-Jie1   

    1. 1. Department of Fundamental Courses, Institute of Disaster Prevention, Langfang 065201, Hebei Province, P. R. China;
      2. Department of Information, China Cleaning Industry Association, Beijing 100044, P. R. China
    • Received:2012-02-07 Revised:2012-03-23 Published:2012-05-17
    • Contact: ZHAO Xue-Yan E-mail:xyzhao@mail.sdu.edu.cn
    • Supported by:

      The project was supported by the Teachers' Scientific Research Fund of China Earthquake Administration (20110123) and Fundamental Research Funds for the Central Universities for Innovative Research Team, China (ZY20110103).