SYNTHESIS OF SLIPPERY LIQUID INFUSED POROUS SURFACE BASED ON ZINC OXIDE AND SILICONE OIL FOR ANTIBIOFILM APPLICATION

• Main Author: Gracia, Cherry
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/85075
• Institution: Institut Teknologi Bandung

Biofilms are microbial communities that cause chronic infections and antimicrobial treatment problems, and contribute to industrial biofouling affecting various sectors. Nanocomposites with antimicrobial nanoparticles offer a solution by developing an antibiofilm surface that has antibacterial material and anti microbe adherence. This research aims to synthesize Slippery Liquid-Infused Porous Surfaces (SLIPS) using zinc-oxide thin films via spray coating method, providing an environmentally friendly approach to creating anti-biofouling surfaces with applications in anti-corrosion, biomedical, and antifouling technologies. ZnO thin films were created by spraying sol containing zinc acetate dihydrate, ethanol, and monoethanolamine on the glass slides followed by calcination. SLIPS were then produced by immersing these films in silicone oil with a variety of viscosity (350 cps and 1000 cps). SEM analyses revealed ZnO thin film has granular particle morphology while ERD analysis shows the presence of zinc and oxide composition. XRD analysis confirmed a zinc oxide hexagonal crystal structure after calcination. Water contact angle measurements indicated strong hydrophilic behavior for ZnO thin films and hydrophobic behavior for SLIPS, with immersion in silicone oils enhancing surface slipperiness. Performance tests are conducted through milk, coffee, and ketchup immersion resulting in liquid repellency behavior for SLIPS compared to ZnO thin film, especially those with higher ZnO concentrations and silicone oil viscosity.