To Investigate the Hydrophobic Effect on Glass Slide using Aluminum Oxide as a Nonmaterial Coating with Ethanol, Polyvinyl Alcohol and Acetone as a Solvent using Dip Coating and Spray Coating Techniques

This study investigates the Al2O3 coatings' hydrophobic properties on glass slides utilizing a dip coating process and solvents containing acetone, polyvinyl alcohol (PVA), and ethanol in various compositions. The experimental design uses dip coating techniques to systematically apply Al2O3 coatings on glass slides. Coating on glass slide is done by mixing Al2O3 with a solution of firstly ethanol in different composition 5%, 10% and 15%. Secondly Al2O3 is mixed with ethanol along with polyvinyl alcohol in different composition 5%, 10% and 15%. Thirdly Al2O3 is mixed with ethanol, polyvinyl alcohol and acetone in different composition 5%, 10% and 15%. The hydrophobic property of based material Al2O3 enhanced and these enhancements is compared with different characterization of contact angle test, FTIR test and XRD analysis. Coating solution is prepared after weighing by analytical balance machine and mixing is done with help of magnetic stirrer and batch sonicator. Finally, sample is dried for 24 hrs and then heat treatment is done in Hot Air Oven between 250 -300-degree centigrade temperatures.