Institute for Materials Chemistry and Engineering, Kyushu University


LAST UPDATE 2017/02/25

  • 研究者氏名
    Researcher Name

    高橋良彰 Yoshiaki TAKAHASHI
    准教授 Associate Professor
  • 所属
    Professional Affiliation

    Institute for Materials Chemistry and Engineering, Kyushu University

    Evaluation Office of Materials Properties and Function
  • 研究キーワード
    Research Keywords

    Model polymers
    Natural polymers
    Ionic liquids
Research Subject
Study on the relations between molecular and/or hierarchical structures and rheological properties of polymeric soft matter.

研究の背景 Background


Polymeric soft matters have significant diversity in their molecular and/or hierarchical structures, and the latter can be changed by external stimuli. Study on the relations between structures and rheological properties of polymers and analogous soft matters have been developed to understand the basic physical properties from molecular view and also as a method of characterization. It is now being important from point of view of controlling physical properties and industrial processing. In addition, development of new molecular characterization methods for natural polymers are also important to efficiently use those polymers.

研究の目標 Outcome


For model polymers such as di- and triblock copolymers as well as those containing ring structure of polymer molecules, the research is directed to understand the relations between their molecular and/or hierarchical structures and rheological properties. For natural polymers such as cellulose and silk fibroins, which are insoluble into conventional solvents, rheological measurements for ionic liquid solutions of those polymers are conducted to develop new characterization methods for those polymers.

研究図Research Figure

Fig.1. Image of loop and bridge chains in triblock copolymers and bridge content dependence of modulus. Fig.2.Molecular weight dependence of relaxation time for symmetric SP diblock copolymers. Fig.3. Molecular weight dependence of intrinsic viscosity of pullulan in different solvents.

文献 / Publications

高分子, 59, 724 (2010). 放射線化学, 91, 45 (2011). Polymer, 53, 3354 (2012). Macromolecules, 46, 7097 (2013). Nihon Reoroji Gakkaishi (Journal of the Society of Rheology, Japan), 42, 191 (2014).