Abstract:

Filled rubbers consist of polymer and filler. So three networks due to three different interactions, polymer-polymer, polymer-filler, and filler-filler interactions, should exist. The first is entanglement or cross-linked network due to interchain interactions. The second is filler network composed of carbon black particles that are joined by bridging polymer chains attached more or less firmly to the particles through e.g. entanglement trapped at the filler-polymer interface (bridged filler network). The third is filler network by direct particle contact (contact filler network). Linear and nonlinear viscoelastic properties of filled rubbers are characterized by combination of rheometry and resistometry and discussed with the use of simple three-network model.

_____________________________________

Biography:

Job Experience and Social Activity
1980-1981　Research Associate, Nagoya University
1981-1982　Lecturer, Nagaoka University of Technology
1982-1984　Visiting Researcher, University of Wisconsin, Dept of Chem., USA
1982-1994　Associate Professor, Nagaoka University of Technology
1995-present    Professor, Nagaoka University of Technology
2013- President, The Society of Rubber Science and Technology, Japan
Research Interests
Polymer and Rubber Physics and Rheology, especially Nonlinear Viscoelastic Properties of Filled Rubber Awards
2004  THE SRJ RESEARCH AWARD，The Society of Rheology, Japan
2007  POLYMER PHYSICS AWARD, American institute of Physics
2008  THE SRJ AWARD, The Society of Rheology, Japan
2012  OENSLAGER MEDAL, The Society of Rubber Science and Technology, Japan