Warlinda Eka Triastuti, Suprapto, Mukhammad Muryono, Krisna Setya Ardhana, Nabila Wahyu Azizah, Ade Citra Oktaviana Elok Sampurno, Muhammad Akha Meghotsah, Erika Desi Cahyani, Meity Wulandari
This study involves the production of fishing net filaments biodegradable from cassava starch combined with High-Density Polyethylene (HDPE) and Low-Density Polyethylene (LDPE), and with the addition of maleic anhydride (MA) as a compatibilizer agent, using the reactive extrusion method. Biodegradable fishing nets can be degraded by seawater microorganisms after a certain period, aiming to prevent ghost fishing and protect marine ecosystems. The research stages include modifying cassava starch, blending LDPE with modified cassava starch, producing fish net filaments, and analysis. In the starch modification stage, the best-acetylated starch achieved a degree of substitution (DS) with the highest value of 1.7, indicated by the appearance of the C=O group at a wavelength of 1729 cm-1. The FTIR test results of the filament showed that MA was grafted onto LDPE and HDPE, evidenced by the presence of C=O, C-O, -OH, and C-H groups. In this study, the best filament was the one adding 5% MA, which resulted in a tensile strength test value of 96.13 MPa. The interfacial adhesion of the filament increased, as proven by morphology analysis with 5% MA added, and differential scanning calorimetry analysis revealed that the presence of the compatibilizer improved the composite with an optimum melting point of 132.48°C. SEM analysis showed that the starch, LDPE, and HDPE were perfectly blended without voids, with a grafting degree of 1.751. © 2026 Author(s).
Industrial Chemical Engineering Department, Institut Teknologi Sepuluh Nopember, Surabaya, 60111, Indonesia; Biology Department, Institut Teknologi Sepuluh Nopember, Surabaya, 60111, Indonesia; Civil Engineeering, Universitas, Universitas Negeri Surabaya, 60231, Indonesia
