Viscous Behavior of PS, PP, and ABS in Terms of Temperature and Pressure-Dependent Hole Fraction


Akdeniz G., YAHŞİ U. , TAV C.

JOURNAL OF APPLIED POLYMER SCIENCE, vol.117, no.1, pp.110-113, 2010 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 117 Issue: 1
  • Publication Date: 2010
  • Doi Number: 10.1002/app.31565
  • Title of Journal : JOURNAL OF APPLIED POLYMER SCIENCE
  • Page Numbers: pp.110-113
  • Keywords: zero-shear viscosity, free volume, hole fraction, Simha Somcynsky hole theory, equation of state, MOLECULAR-WEIGHT HYDROCARBONS, VACANCY BEHAVIOR, POLYMER MELTS, FREE-VOLUME, VISCOSITY, LINKING, THERMODYNAMICS

Abstract

We have developed a zero-shear viscous model in terms of temperature- and pressure-dependent hole fraction computed from Simha-Somcynsky Hole Theory. This model successfully interprets the viscosity data of PS, PP, and ABS as a function of hole fraction for a broad range of temperature and pressure. We have also introduced and discussed a new term: Viscoholibility; the derivative of logarithm of viscosity with respect to hole fraction. When the hole fraction takes highest available value, the viscoholibility approaches asymptotically to a constant value by which the viscosity changes linearly with the hole fraction. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 117: 110-113,2010