Hole Fraction Dependence on Linear Viscosity of PS, PP and ABS


Sahin-Dinc F.

INTERNATIONAL POLYMER PROCESSING, cilt.30, ss.585-592, 2015 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 30 Konu: 5
  • Basım Tarihi: 2015
  • Doi Numarası: 10.3139/217.3101
  • Dergi Adı: INTERNATIONAL POLYMER PROCESSING
  • Sayfa Sayıları: ss.585-592

Özet

A linear dependency of zero shear, constant shear-rate and constant shear-stress viscosities with temperature and hole fraction ("thermo-occupancy" function) was derived for poly-acrylonitrile-butadiene-styrene (ABS), polypropylene (PP) and polystyrene (PS). The relation of viscosity parameters, such as transmission coefficient and a measure of activation energy coefficient, with shear-rate and shear-stress was also investigated and some conclusions on the differences for the studied polymers were discussed. In particular, it was found that, for all materials, the derivative of logarithm of viscosities at zero shear, constant shear-rate and constant shear-stress decreases with decreasing rate with the hole fraction.