Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (2): 383.

• Articles • Previous Articles     Next Articles

Rheological Study of Sol-gel Transition for F68 and F108 in Aqueous Solutions

TANG Jian-Kai1, XIE Yu2, SUN Zhao-Yan1*, AN Li-Jia1   

  1. 1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
    2. State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130021, China
  • Received:2009-05-19 Online:2010-02-10 Published:2010-02-10
  • Contact: SUN Zhao-Yan. E-mail: zysun@ciac.jl.cn
  • Supported by:

    国家自然科学基金(批准号: 20574070, 20734003, 50621302)和吉林省杰出青年科学基金(批准号: 20070113)资助.

Abstract:

Using the rheology method, the sol-gel transitions of amphiphilic triblock copolymers Pluronic F68(PEO80-PPO30-PEO80) and F108(PEO133-PPO50-PEO133) were studied with increasing the temperature. The “soft gel” regions were found during the sol-gel transition process for the aqueous solutions with some concentrations. It is inferred that the structure of the “soft gel” region by the frequency scanning experiment for F68 aqueous solution.

Key words: Soft gel; Hard gel; Modulus; PEO-PPO-PEO

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