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The structure of the film mainly refers to the morphology of the film, the crystalline state of the film, and the molecular structure of the film
(1) Microfiltration membrane—has an open grid structure
The microporous membrane has an open grid structure, and the formation mechanism is: After the membrane forming solution forms a membrane, the solvent first evaporates from the membrane surface to form a surface layer
(2) Double-layer and three-layer structure model of reverse osmosis membrane and ultrafiltration membrane
Riley first studied the structure of the cellulose acetate reverse osmosis membrane prepared by the LS method
Gittems took a closer look at the cellulose acetate film and believed that this type of film has a three-layer structure
Related Links: Preparation of Membrane (3)