The Effect of Polymeric Surfactant on Adhesion and Uniformity of Ag-TiO₂ Coating on Air Filter with Self-Cleaning Capability

Abstract:

This research is a continuing study on F9-filter development via Ag-TiO₂ coating to promote volatile organic compounds (VOCs) removal and antibacterial activity. Problems of poor adhesion and uniform distribution of coating material on the filter surface were observed, so the addition of a polymeric surfactant (PS), which behaves as both a binder and a surfactant, was applied in this study in order to solve such problems. Dip coated F9-filter samples with a selection of Ag-TiO₂ suspension were characterized and tested. Environmental scanning electron microscope was used to characterize uniform coating distribution on an air filter. Self-cleaning test was performed in accordance with ISO 27448. The results showed that Ag-TiO₂ with PS dip coating on air filters provide good adhesion and high uniformity. It is also found that self-cleaning capability of Ag-TiO₂ with PS coated filter is increasing with increasing of Ag-TiO₂ and PS concentrations. Within a scope of this work, only visible light can drive Ag-TiO₂ to undertake photocatalytic activity. Hence, improvement of Ag-TiO₂ coating on F9- filter is confirmed when PS is applied.

• Periodical: Materials Science Forum (Volume 1090)
• Pages: 55-60
• DOI: https://doi.org/10.4028/p-o2ky4c
• Online since: May 2023
• Authors: Duangdaw Pranangrong, Ratima Kraikruan, Tippabust Eksangsri*, Chaweewan Sapcharoenkun
• Keywords: Adhesion, Ag-TiO₂, Dip Coating, F9-Filter, Polymeric Surfactant, Self-Cleaning, Uniformity

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