Dispersion State of Zirconium Oxide Particles in Polymer Blends and Viscoelastic Behavior of the Composites

• Takahashi Masaoki

  Department of Macromolecular Science and Engineering, Kyoto Institute of Technology

• Osawa Satoru

  Department of Macromolecular Science and Engineering, Kyoto Institute of Technology

• Jinnai Hiroshi

  Department of Macromolecular Science and Engineering, Kyoto Institute of Technology

• Yamane Hideki

  Center for Fiber and Textile Science Science, Kyoto Institute of Technology

• Shiomi Haruhisa

  Department of Chemistry and Materials Technology, Kyoto Institute of Technology

Bibliographic Information

Other Title

• Dispersion state of zirconium oxide particles in poly1mer blends and viscoelastic behavior of the composites

Abstract

Zirconium oxide (ZrO₂) particles are dispersed in polystyrene (PS)/poly(butyl methacrylate) (PBMA) and PS/poly(methyl methacrylate) (PMMA) blend melts with bicontinuous structure. ZrO₂ particles enter exclusively into PBMA phase in PS/PBMA blend, while the particles exist in both phases in PS/PMMA blend. The main cause for the exclusive localization in PBMA phase is the lowest entropy loss of the most flexible PBMA chains among the three polymers due to adsorption onto ZrO₂ particles. In PBMA phase, spherical aggregates of ZrO₂ particles are formed at a concentration of 11 vol%, while ZrO₂ particles make linear arrays at 21 vol% and branches at 29 vol%. These arrays and branches give very high second-plateau in G' at low frequencies. In PS/PMMA blend melt, linear arrays and branches appear in both phases even at 4.4 vol%, and network structure is formed at 11 vol%. Due to the structural difference, the PS/PMMA/ZrO₂ composite gives much higher second-plateau than that of PS/PBMA/ZrO₂, when compared at the same vol% of ZrO₂. A peculiar network structure is observed in PS/ZrO₂ composite at a low concentration of 4.4 vol%. The low value of G' close to that of the matrix at intermediate frequencies with a small number of spherical aggregates indicates very weak adsorption of PS chains to ZrO₂ particles.

Journal

• Nihon Reoroji Gakkaishi

  Nihon Reoroji Gakkaishi 35 (1), 1-9, 2007

  The Society of Rheology, Japan

Keywords

• Zirconium oxide
• Dispersion state
• Composite
• Polymer blend
• Bicontinuous structure

Details

• CRID: 1390001205091257600
• NII Article ID: 10029817814
• NII Book ID: AN00198812
• DOI: 10.1678/rheology.35.1
• ISSN: 21864586
• ISSN: 03871533
• NDL BIB ID: 8722359
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8722359
• Web Site: http://www.jstage.jst.go.jp/article/rheology/35/1/35_1_1/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed