3 years ago

Flow behavior studies of kefiran systems

Flow behavior studies of kefiran systems
The flow properties of a series of kefiran aqueous solutions with concentrations ranging from 0.25 to 4.0% (w/v) were examined at 4, 25 or 40 °C under controlled shear rate mode and over six orders of magnitude.The results indicated that the flow behavior of kefiran systems in solution is that of a pseudoplastic fluid at low shear rates whereas at high shear rates is that of a Newtonian one. Freeze-thaw treatment of kefiran solutions affected their structure, forming quasi-like cryogels whose consistency is concentration depended whereas their network integrity depended, possibly, on hydrogen bonding. Thermal treatment of kefiran solutions in two consecutive freeze-thaw cycles indicated that the texture of the systems remained virtually unchanged. Lubricated squeeze flow studies of kefiran quasi cryogels showed that their elongational viscosity was concentration dependent and they exhibited pseudoplasticity.

Publisher URL: www.sciencedirect.com/science

DOI: S0268005X17317538

You might also like
Never Miss Important Research

Researcher is an app designed by academics, for academics. Create a personalised feed in two minutes.
Choose from over 15,000 academics journals covering ten research areas then let Researcher deliver you papers tailored to your interests each day.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.