Fabrication of Superhydrophobic High Density Polyethylebe (HDPE) Using Scraping, Bonding, and Peeling Method

• Main Author: Zulhaidir Pratama, Nukti
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/33511
• Institution: Institut Teknologi Bandung

Superhydrophobic surface is one of natural phenomena, which can be found on lotus leaf and water strider’s leg. Superhydrophobic surface is defined as surface with static liquid contact angle of 150° or more. Superhydrophobic surface can be used as self-cleaning material, water repellent, and anti-corrosive. Superhydrophobic surface commonly fabricated using coating method, but simple and cheap method such as scraping, bonding, and peeling method can produce the same result. Scraping, bonding, and peeling method can be applied on material with intrinsic hydrophobicity, such as High Density Polyethylene (HDPE). HDPE is commonly used as household chemical container, such as detergent and bleach. Scraping, bonding, and peeling on HDPE surface can increase hydrophobicity of HDPE, which can extend its lifetime as household chemical container. Scraping, bonding, and peeling methods are used to produce HDPE surface witsuperhydrophobic property. These methods will increase roughness of HDPsurface. According to Wenzel and Cassie-Baxter theories, surface with high roughness will have high static contact angle between the surface and liquid. HDPE surface produced from these methods has static contact angle of 94.777°to 118.209°. Those numbers show increase of 4° to 28° compared to untreated HDPE surface.