Flow of solutions of hydroxypropyl guar-poly(ethylene oxide) mixtures through a porous medium

A. C. Gamboa, A. E. Sáez, A. J. Müller

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

In flow through porous media, solutions of poly(ethylene oxide) (PEO) exhibit extension thickening, whereas hydroxypropyl guar (HPG) solutions are shear-thinning at high concentrations. The results show that the extension-thickening exhibited by PEO solutions becomes less critical with increasing flow rate as the concentration of HPG in the solution is increased. At high concentrations of HPG, the presence of PEO inhibits the shear-thinning behaviour, without increasing the apparent viscosity of the solution. The presence of HPG reduces the rate and extent of degradation of PEO in the flowing solution.

Original languageEnglish (US)
Pages (from-to)717-724
Number of pages8
JournalPolymer Bulletin
Volume33
Issue number6
DOIs
StatePublished - Nov 1 1994
Externally publishedYes

Keywords

  • Polymer blends
  • hydroxypropyl guar
  • molecular flexibility
  • poly(ethylene oxide)
  • porous media

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Polymers and Plastics
  • Materials Chemistry

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