ISSN:
1435-1536
Keywords:
Rheology
;
suspension
;
adsorption
;
polystyrene
;
depletion flocculation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Storage moduli (G′) of hydrophilic and hydrophobic silica suspensions in trans-decalin and in trans-decalin solutions of polystyrene (PS) have been measured by taking account of PS adsorption. PS were adsorbed on the hydrophilic silica. TheG′ values of the hydrophilic suspensions in the presence of low molecular weight PS are similar to those without PS and they are larger than those in the presence of higher molecular weight PS. On the other hand, any PS chains cannot adsorb on the hydrophobic silica particles. TheG′ values of all hydrophobic suspensions are higher than that in trans-decalin due to depletion flocculation and they are two orders of magnitude larger than those for the hydrophilic silica suspensions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01189516
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