Method for providing textured, porous polymeric films

Textured and porous organic polymeric films can be obtained by subjecting organic polymeric films that are swellable in carbon dioxide, to supercritical carbon dioxide while such films are under an atmospheric pressure of at least 73 bar and an applied physical force of at least 0.05 Newtons. The te...

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Bibliographische Detailangaben
Hauptverfasser:	Owusu-Nkwantabisah, Silas, Gillmor, Jeffrey R
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	Textured and porous organic polymeric films can be obtained by subjecting organic polymeric films that are swellable in carbon dioxide, to supercritical carbon dioxide while such films are under an atmospheric pressure of at least 73 bar and an applied physical force of at least 0.05 Newtons. The textured and porous organic polymeric films have surface wrinkles having an average peak to valley height of at least 1 μm and up to and including 3,000 μm, and a porosity of at least 10%.