Thermoplastic surface modification is achieved with photocatalysts, such as titanium dioxide, tungsten oxide and mixtures thereof. A uniform coating of a powdered photocatalyst is applied to a thermoplastic surface that is wetted with an organic solvent. The coating is in a range between approximately 1.5 mg/cm2 to approximately 2.5mg/cm2. After the uniform coating of photocatalyst is dried, the thermoplastic surface is heated to a temperature above its softening temperature, usually in a range between approximately 80*C to approximately 130*C; then, a mild pressure is applied to imbed the photocatalyst into the surface of the thermoplastic sheet. The method of modification is inexpensive, long-lasting and non-detrimental to the thermoplastic surface. A surface is provided with improved aesthetic appearance, extended lifetime and sustained protection from undesirable growth of nuisance organisms, such as algae, fungus, bacteria, mold, mildew and the like.
Application Serial Number
Assignee at Issuance
Florida Solar Energy Center (FSEC)
Assignee at Filing
Nonprovisional Application Record
Linkous, Clovis, "Surfaces of Thermoplastic Sheets and Structures Modified with Photocatalytic Materials DIV" (2011). UCF Patents. 547.