What is the Characteristic curvature (CC) value of Sorbitan Sesquioleate (Span 83)?

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Mike Murphy

https://www.stevenabbott.co.uk/practical-surfactants/cc.php

Arian Velayati

Mike Murphy Was not in the list, but thanks.

Yuri Mirgorod

The curvature of the surface is a characteristic of the dispersion of a dispersed system, for example, an emulsion. The curvature of a spherical particle is equal to unity divided by its radius. Sorbitan Sesquioleate is an emulsifier, a substance. Apparently you need the characteristic curvature of the emulsion obtained using Sorbitan. To do this, you need to make an emulsion and determine the radius of its droplets.

Thank you so much for the response.

I think there is a misunderstanding, Cc is the surfactant number (a representative number like HLB which describes the emulsifier) in the hydrophilic lipophilic deviation (HLD) theory.

Ryszard Zielinski

According to my calculations:

Span 80, Cc = 4.01

Span 83, Cc = 5.63

Span 85, Cc = 7.04

With regards

Ryszard Zielinki

Ryszard Zielinski Thanks so much professor. Do you have a publication (or know one) with the values mentioned for the citation purposes?

This is a preliminary result. The paper is in preparation at it will be submitted for publication next spring. For the moment i am still collecting experimantal data.

Regards

Hansel Comas

I can provide the value for Cc of Span 83 from an experimental determination during a thesis work, not published unfortunately. It was 5.6, actually in line with what professor Rysard Zielinski stated in a post before. I am happy to see the coincidence. May be this answer your question. Did you got any luck in the end? Can you provide a feedback please?

I can provide the value for Cc of Span 83 from an experimental determination during a thesis work, not published unfortunately. It was 5.6, actually in line with what professor @Ryszard Zielinski stated in a post before. I am happy to see the coincidence. May be this answer your question. Did you got any luck in the end? Can you provide a feedback please?

Professor @Ryszard Zielinski can you provide an update on the status of the publication you mentioned on a post before please? Thank you very much.