We all know, every alcohol has its own surface tension that affects on capillary forces. But what is better material for porosity determination and why?
Dear Khodadadi,
I believe that most of the alcohols have very similar surface tensions, as they in general possess extremely close physical properties (density, viscosity, etc.). For example, the variation of surface tensions of CH3OH, C2H5OH and C3H7OH is about 0.4 mN/m (from 22.1-21.7 mN/m). You may check the following link: http://www.ddbst.com/en/EED/PCP/SFT_C110.php
By my opinion, the alcohols can give differences in terms of porosity determination of any solid material-of-interest due to their different chemical reactivity, which in a liquid state does not increase proportionally to the alkyl chain length (in contrary to the gas state, where the reactivity is directly proportional to the alkyl chain length). For instance, although the methanol has the shortest alkyl chain length it is more reactive than ethanol and isopropanol. There is one paper from 1968: J. I. Brauman, L. K. Blair, Gas-phase acidities of alcohols. Effects of alkyl groups, J. Am. Chem. Soc. 90 (1968) 6561-6562, where the above statements are considered.
If you wish so, you may also check the recently published paper of our research group, where we demonstrate that different alcohols affect differently the physicochemical properties of superhydrophobic carbon soot coatings (very porous material). Article Interactions of Superhydrophobic Carbon Soot Coatings with S...
Hope this helps.
Sincerely,
Karekin
Dear Esmeryan,
Many thanks for your help. I greatly appreciate it.
Your welcome Foroogh,
If you need further discussion on this topic i will be happy to assist.
Sincerely,
Karekin
Dear Karekin,
Thank you for your help and support. I greatly appreciate your kindness. I will ask my questions of you in the near future.
Regards.
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