Morphological Degradation of Sago Starch (Metroxylon sp.) Bioplastic of Palopo, South Sulawesi

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Published Nov 30, 2025
https://doi.org/10.55043/jaast.v9i4.501
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Vol. 9 No. 4 (2025): Journal of Applied Agricultural Science and Technology

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Pria Gautama
Politeknik Negeri Ujung Pandang
Budiawan Sulaeman
Andi Djemma University
Nurhidayanti Nurhidayanti
Politeknik Negeri Ujung Pandang
https://orcid.org/0000-0002-7658-0705

Abstract

The growing concern over non-organic plastic waste has driven the development of bioplastics from renewable sources, such as sago starch (Metroxylon sp.), as an environmentally friendly alternative. This study aims to analyze the morphological structural changes of sago starch bioplastics exposed to UV radiation using Scanning Electron Microscopy (SEM). The bioplastics were prepared from sago starch, subjected to controlled UV irradiation, and subsequently examined with SEM to observe microstructural modifications. The results demonstrate that UV radiation significantly induces degradation and structural alterations, characterized by increased surface roughness, and changes in the fracture structure and cross-section of the bioplastic. SEM images show the progression of structural damage at various UV exposure times (24, 48, and 72 hours), illustrating the formation of cracks, micro-cavities, and increased porosity. These findings underscore the importance of understanding UV degradation for developing more environmentally resistant sago bioplastics.

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Author Biographies

Pria Gautama, Politeknik Negeri Ujung Pandang

Center for Material and Manufacturing, Department of Mechanical Engineering

Budiawan Sulaeman, Andi Djemma University

Faculty of Engineering, Mining Engineering

Nurhidayanti Nurhidayanti, Politeknik Negeri Ujung Pandang

Center for Material and Manufacturing, Department of Mechanical Engineering

How to Cite
1.
Gautama P, Sulaeman B, Nurhidayanti N. Morphological Degradation of Sago Starch (Metroxylon sp.) Bioplastic of Palopo, South Sulawesi. J. appl. agricultural sci. technol. [Internet]. 2025Nov.30 [cited 2025Dec.1];9(4):594-60. Available from: https://www.jaast.org/index.php/jaast/article/view/501

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