Which is more useful viscosity modifier agent than polyethylene oxide or diatun gum?
Depends what you want really, PEO solutions are generally fairly Newtonian, and so have a high viscosity at all shear rates, whilst polysaccharide gums including diatun gum are non Newtonian and have a high viscosity at low shear rates and a low viscosity at high shear rates.
I suspect you will want the later case so that diatun or indeed some other polysaccharide based polymer would be good
What do you mean by age? If you mean time it will be fairly constant with time, but both will undergo degradation due to bacteria over time, which will lower the polymer mol wt and hence viscosity, PEO probably less so than the Diatun gum.
Could be mitigated against to some extent by adding a bactericide
dear sir , i used a kelcocrete df as a viscosity modifier for concrete admixture.but at 0.7 dose LBWC admixture i used 0.2 LBWC dose as diatun gum kelcocrte shows less retention & stickyness but if i increased admixture dose upto 0.9 its shows too much cohesiveness.dose their is any impact on admixture compatibility with both SNFC or PCE?
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