What might be probable mechanisms leading to the physical foaming on the nanostructured of a composite componded by gelatin, glycerol, tannic acid and cloisite when processed by extrusion at about 90C. I would aprecciate any help.
I looked at your interesting work. You are already a famous scientist. Your mix is complicated.
If you have a Cloisite 30B nanoclay, then you can see the article.
Article Effect of Cloisite 30B nanoclay on the mechanical properties...
Air bubbles can only be in clay. Glycerol molecules can penetrate there. Molecules in nanopores behave unexpectedly, for example, water molecules in nanopores of beryl.