• Title/Summary/Keyword: polymer rheology

Search Result 313, Processing Time 0.017 seconds

Migration in concentrated suspension of spherical particles dispersed in polymer solution

  • Kim, Chongyoup
    • Korea-Australia Rheology Journal
    • /
    • v.13 no.1
    • /
    • pp.19-27
    • /
    • 2001
  • In this symposium paper, the migration and hydrodynamic diffusion of non-colloidal, spherical particles suspended in polymer solutions are considered under Poiseuille or torsional flows. The migration phenomena in polymer solutions are compared with those in Newtonian fluids and the effect of fluid elasticity is discussed. The experimental results on particle migration in dilute polymer solution reveal that even a slight change in the rheological property of the dispersing medium can induce drastic differences in flow behavior and migration of particles, especially in dilute and semi-concentrated suspensions.

  • PDF

Crystallization Vitrification and Phase Separation

  • Kim, Sung-Chul
    • The Korean Journal of Rheology
    • /
    • v.1 no.1
    • /
    • pp.12-19
    • /
    • 1989
  • Polymer fluid flow and polymerization reaction occur simultaneously during the reactive polymer processing. The viscosity and physical properties change as thereaction proceeds and the crystallization and vitrifica-tion occur as the T,,,and the Tg of the polymerizing fluid exceeds the reaction temperature within the mold.

  • PDF