Show simple item record

dc.contributor.author Goodwin, J.W.
dc.contributor.author Hughes, R.W.
dc.contributor.author Kwaambwa, H.M.
dc.contributor.author Reynolds, P.A.
dc.date.accessioned 2009-06-10T13:00:27Z
dc.date.available 2009-06-10T13:00:27Z
dc.date.issued 2000
dc.identifier.citation Goodwin J.W. et al. (2000) The phase separation behaviour and the viscoelastic properties of particles with non-adsorbing polymers: Part I - Experimental study, Colloids and Surfaces A: Physicochemical and engineering Aspects, vol. 161, pp. 339-359 en_US
dc.identifier.issn 0927-7757
dc.identifier.uri http://hdl.handle.net/10311/329
dc.description.abstract A series of well characterised cis-polyisoprene polymers have been added to dispersions of PHS coated PMMA particles in dodecane. At a molecular weight of 8000 g mol−1 and above, these systems showed phase separation at low particle volume fractions and above a critical polymer concentration. The rate of separation has been shown to be influenced by the viscosity of the polymer. At high polymer and particle volume fractions long lived metastable phases occurred. Above a critical concentration these were viscoelastic indicating an appreciable change in diffusion dynamics with two relaxation processes present. A significant Bingham yield stress was also observed. The Asakura Oosawa potential was not able to describe the observed rheological properties. At a molecular weight of 1000 g mol−1 no phase separation was observed. At high particle concentrations the yield stress was found to reduce with the addition of polymer. This was due to the polymer acting as a ‘solvent’ and penetrating the stabilising layer on the particles. en_US
dc.language.iso en en_US
dc.publisher Elseview Science B.V. www.elsevier.nl/locate/colsurfa en_US
dc.subject Non-absorbing polymers en_US
dc.subject Phase separation en_US
dc.subject Viscoelastic properties en_US
dc.subject Depletion en_US
dc.subject Rheology en_US
dc.title The phase separation behaviour and the viscoelastic properties of particles with non-adsorbing polymers: Part I - Experimental study en_US
dc.type Published Article en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search UBRISA


Advanced Search

Browse

My Account