Functional Form of a Damping Function for the BKZ Equation Derived from Experimental Data in Entangled Polymer Systems

• TAKAHASHI Masaoki

  Department of Polymer Science and Engineering, Kyoto Institute of Technology

• URAKAWA Osamu

  Department of Polymer Science and Engineering, Kyoto Institute of Technology

• GOLSHAN EBRAHIMI Nadereh

  Department of Material Chemistry, Faculty of Engineering, Kyoto University

• ISAKI Takeharu

  Mitsui Toatsu Chemicals, Nagoya Laboratory

• MASUDA Toshiro

  Department of Material Chemistry, Faculty of Engineering, Kyoto University

書誌事項

タイトル別名

• Functional Form of a Damping Function f

抄録

Damping functions are obtained from stress relaxation experiments in shear and equibiaxial extension for polystyrene melts with narrow and broad molecular weight distribution. Uniaxial damping function is determined applying the Wagner-Demarmels method to the stress growth data obtained in uniaxial extensional flow. When the damping function h(I,II) is plotted against βI+(1-β)II with the strain invariants I,II and a parameter β, a universal function is obtained for each polystyrene sample. It is found that another parameter b is necessary to describe contribution of the Cauchy strain tensor in the constitutive equation in order to explain the experimental data obtained in uniaxial and biaxial extensions.<BR>Fitting with the experimental data of damping function h (I,II) is tried using three representative equations, which are proposed by Papanastasiou-Scriven-Macosko (PSM), Luo-Tanner (LT), and Wagner-Demarmels (WD). The LT equation gives good fit with the experimental data. On the other hand, the WD and the PSM equations cannot describe the experimental data.

収録刊行物

• Nihon Reoroji Gakkaishi(Journal of the Society of Rheology, Japan)

  Nihon Reoroji Gakkaishi(Journal of the Society of Rheology, Japan) 24 (1), 37-42, 1996

  The Society of Rheology, Japan

キーワード

• BKZ equation
• Stress relaxation
• Damping function
• Luo-Tanner equation
• Wagner-Demarmels equation

詳細情報

• CRID: 1390001205467187584
• NII論文ID: 130004661939
• NII論文ID: 10002770081
• NII書誌ID: AN00198812
• DOI: 10.1678/rheology1973.24.1_37
• COI: 1:CAS:528:DyaK28XjtlWrsL4%3D
• NDL書誌ID: 3934500
• ISSN: 03871533
• ISSN: http://id.crossref.org/issn/03871533
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3934500
• Web Site: https://www.jstage.jst.go.jp/article/rheology1973/24/1/24_37/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可