I have synthesized PNIPAM (Poly (N-isopropylacrylamide)) microgels, which are copolymerized with oligo-ethylene glycol based comonomers. I have to determine the exact number concentration for each microgel using viscosity experiments. I wonder which formula will work to calculate the number concentration?
Dear all, what do you mean by 'the number concentration'? Is it one of the relative, inherent, specific, or intrinsic viscosities that are determined by viscometry ? My Regards
In case you made microgel particles you can measure their size using scattering techniques so you have an estimate of the hydrodynamic volume per particle. Dilute the dispersion sufficiently then yields the number concentration of such particles.
Dear all, what do you mean by 'the number concentration'? Is it one of the relative, inherent, specific, or intrinsic viscosities that are determined by viscometry ? My Regards
Remco Tuinier Thank you, we have used this method but reviewer asked us for using viscosity experiment specifically.
Abdelkader BOUAZIZ Number concentration is the total number of particles per unit volume present in solution. We have determined relative viscosity.
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