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Nelly Wahyuni
Universitas Tanjungpura
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CASSAVA-BASED BIOPLASTIC AS A CARRIER MEDIUM FOR SLOW-RELEASE FERTILIZER Yudi, Yulius; Syahbanu, Intan; Wahyuni, Nelly
Walisongo Journal of Chemistry Vol. 8 No. 2 (2025): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v8i2.23718

Abstract

The rapid nutrient release of conventional fertilizers often leads to resource inefficiency, environmental pollution, and a continuous increase in subsidized fertilizer demand in Indonesia. This study aimed to develop cassava starch (Manihot esculenta Crantz)-based bioplastic as a carrier medium for urea slow-release fertilizer (SRF). The bioplastic was further analyzed for its mechanical properties, biodegradability, and nutrient release efficiency. The research method involved cassava starch preparation, bioplastic fabrication using cassava starch, polyvinyl alcohol (PVA), and glycerol mixtures, followed by testing of water resistance, tensile strength, elongation, Fourier Transform Infrared (FTIR) analysis, and SRF release performance. The results showed that bioplastic containing fertilizer (BP) exhibited higher water absorption, with water resistance of 73.45%, compared to bioplastic without fertilizer (BP0), which showed 67.44% water resistance. Mechanical testing revealed that bioplastic without fertilizer had a higher tensile strength (0.99 MPa) than bioplastic containing fertilizer (0.50 MPa). Although the tensile strength did not meet the Indonesian National Standard (SNI ISO 527-1:2016), which requires values between 24.7–302 MPa, the elongation properties of both samples met the standard range of 21–220%. Functional group analysis using FTIR indicated changes in the chemical structure of the bioplastic due to fertilizer addition, evidenced by a shift in the FTIR absorption peak at 2164.13 cm⁻¹, corresponding to the isocyanate group. The urea slow-release test conducted over six days showed a nutrient release efficiency of 66% for the bioplastic-embedded urea fertilizer (BP) compared to the direct use of urea fertilizer. Overall, this study demonstrates that cassava starch-based bioplastic has strong potential as an efficient carrier material for SRF applications.
Co-Authors Agustiawan, Deri Ajuk Sapar Alfiyani, Hani Amanda, Ferdian Rizki Andi Hairil Alimuddin Angelina, Dina Anis Shofiyani Aprilianti, Wirna Arfida, Khaizurani Ari Widiyantoro Ayyash, Muhammad Yahya Azhar, Annisa Sylvania berta juniarty antomy Dina Angelina Endah Sayekti Erma Maruni Evi Gusmayanti Febriyanti, Shafira Viana Gusrizal Gusrizal Hikmah, Miftachul Imelda H Silalahi Imelda H. S., Imelda H. Imelda Hotmarisi Silalahi Irwan Irwan Jamhir Islami Jumiati Jumiati Kiki Prio Utomo Krisnanti, Gendis Yayi Lia Destiarti M Agus Wibowo Mardhatilla Marpaung, Maria Oktavia Putri Mellisa Nurul Safitri Muhammad Pramulya, Muhammad Nurlina Nurlina Nurlina, Nurlina Panaya, Gabriela Yenti Landang Putri, Lavena Imelda Rahayu, Warsi Kurnia Ridho Brilliantoro Risa Nofiani Risa Nofiani Risya Sasri Rizky Al Ayyubi, Muhammad Rudiyansyah Rudiyansyah Rudiyansyah Rudiyansyah Rudiyansyah Rudiyansyah Sasa Widianti Simamora, Cico Jhon Karunia Sugandi, Didiek Sutarno Sutarno Syah, Nur Rikswan Syahbanu, Intan Syaifurrahman Syaifurrahman Thamrin Usman Thamrin Usman Titin Anita Zahara, Titin Anita Titin Anita Zaharah Utomo, Kiki Prio Vebriyanti, Lo Mei Ly Verry Andre Fabiani Wibowo, Muhamad Agus Wijayanto, Ericco Winda Rahmalia Yateman Arryanto Yossy Yossy Yudi, Yulius Yulistya Vidyaning Maulidya Zaharah, Titin Anita