Patent ID: 11938658
Assignee: KING FAISAL UNIVERSITY
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method of making a freestanding thin film with micropores, the method comprising:
mixing a polymer material selected from the group consisting of polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polystyrene (PS), and any mixture or combination thereof in an organic solvent to form a solution;
stirring the solution to obtain a stirred solution;
pouring the stirred solution on a solid substrate to form a first coated solid substrate;
spin coating the first coated solid substrate until the solvent is removed from a surface of the solid substrate to obtain a second coated solid substrate;
collecting an excess polymer material and an excess solvent from a drain following the spin coating step; and
removing a polymer thin film from the second coated solid substrate to obtain the freestanding thin film with micropores;
wherein the spin coating is conducted for about 1 to about 15 minutes at an rpm of about 100 to about 6000.