Other researchers investigated the difference between supported and nonsupported membranes. They reported that nonsupported membranes are free and shrink during immersion but supported membranes are costrained and cannot significantly shrink during immersion. So, because of generated stretches, a number of additional pores is formed in the supported membranes. But our results is unlike with others. Why do we see these results?
Supported membranes tend to have more surface areas and, hence, better separation capability. Another benefit is that supported membranes have better structural integrity compared to the non-supported membranes.
I cover this subject in my course at Yale University.
Khalil, Y.F. (2016). Separation and Purification. Yale School of Engineering & Applied Science, Yale University, New Haven, CT 06520, USA
Hope this helps answer your question.
Professor Yehia Khalil
Yale University
USA
http://www.pnas.org/content/81/19/6159.short
Article Improved Performance of Silica Membranes for Gas Separation
Dear Prof. Yehia F. Khalil,
Thank you so much for your suggestion. I sent a message to you about 2 years ago and requested the chapter because I could not find that. Even now I can not. Could you please give me the link of the suggested chapter?
This is the only thing that i can find always:
https://seas.yale.edu/departments/chemical-and-environmental-engineering
Best Regards
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