MULTI-FUNCTIONAL FREESTANDING THIN FILMS PRODUCED USING PLASTIC WASTE AND METHODS THEREOF

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MULTI-FUNCTIONAL FREESTANDING THIN FILMS PRODUCED USING PLASTIC WASTE AND METHODS THEREOF

  • US 11,938,658B1

  • الصحة - Health

  • 2024

  • مكتب البراءات الأمريكي - US Patent Office

  • Junaid Saleem, Al-Ahsa (SA); Safdar Hossain Sk, Al-Ahsa (SA); Zubair Khalid Baig Moghal, Al-Ahsa (SA); Gordon McKay, Al-Ahsa (SA).

  • Freestanding microporous thin films, made using plastic waste, can be used as a hydrophobic coating, filtration membranes, or oil-sorbents. A method for producing the microporous thin film involves dissolving the plastic in an organic solvent to obtain a solution; and applying the solution onto a solid substrate through spin-coating followed by controlled heating, resulting in a freestanding porous thin film. Plastic waste comprises recycled polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), or polystyrene (PS), recovered from a waste plastic material derived from post-consumer and/or industrial waste. The approach of fabricating multi-functional thin films from plastic waste combines an effective way to address multiple environmental issues simultaneously.