I am trying to calculate Zeta potential of my suspension so I need to know the dielectric constatnt of the solvent ?
Dielectric constant is frequency dependent parameter, it show different value at different region of frequency. The Zeta potential is operating at which wavelength? How about using refractive index of 1.499 to calculate dielectric constant? Assume the material is not magnetic, then the equation is n = (εr)1/2.
Ahmed Adel Abdelazeez
There is no concept of 'Zeta potential of my suspension'. The word 'solvent' is also confusing - do you mean continuous phase?
Please explain what you mean. Zeta potential (ZP) is a holistic property of particles in suspension and is the magnitude of the potential at the slipping plane some distance away from the particle. ZP is dependent on both the properties of the particle and of the continuous phase and is best applied and understood in aqueous media.
Alan F Rawle thanks for replying , Yes I mean continuous phase and because ZP depends on the continuous phase properties I need to know the dielectric constant of CHP
Ahmed Adel Abdelazeez
What do you think that the ZP of your system will tell you?
Chian Heng Lee The question is explicitly about calculating zeta potential. Therefore, as any practitioner of the technique would know, it's the DC dielectric constant that is needed. Your relationship with refractive index isn't relevant.
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