Bioplastic materials, also known as biodegradable materials made from plant starch, have become one of the alternatives to prevent the accumulation of non-biodegradable plastics. Sago starch material (Metroxylon sp) has been developed for the production of bioplastics. The microstructural properties of Tawaro sago starch (STA) and Tawaroduri sago starch (STB) have been characterized, and it has been found that STA sago starch is superior as a base material for bioplastic production due to its amylose content of 36.49%. The XRD diffractogram revealed the formation of the α-amylose phase, and the elongation of the sago starch (STA) amylose polymer chains (C-O) was confirmed by the absorption band in the range of 1200 – 990 cm−1 for (C-O-C) and (C-O-H) in the sago starch glucosidic ring, with higher intensity compared to Tawaroduri starch (STB) at absorption bands 958 cm−1, 860 cm−1, 771 cm−1, and 715 cm−1. Sago starch (STA) was modified using Heat Moisture Treatment (HMT) technique at a temperature of 100℃ with different time variations, and the hand layup method was used to produce four bioplastic specimens. Sago starch (STA) with 0.0% moisture content in specimen D showed a tensile strength value of 0.254 MPa and a strain of 0.247 MPa. The tensile strength increased due to the HMT treatment of sago starch. However, the strain value of specimen D was still relatively rigid. This occurred because the low moisture content in the starch granules was evenly distributed, leading to increased liquid absorption capacity and better distribution of other elements.
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23 September 2024
THE 4TH INTERNATIONAL CONFERENCE ON INFORMATION TECHNOLOGY AND ADVANCED MECHANICAL AND ELECTRICAL ENGINEERING
9–10 August 2023
Yogyakarta, Indonesia
Research Article|
September 23 2024
Microstructural and mechanical properties of sago starch bioplastics (Metroxylon sp) as biodegradable plastics
Budiawan Sulaeman;
Budiawan Sulaeman
a)
1
Mechanical Engineering, Universitas Hasanuddin
, Jl. Malino No.8 F, Romang Lompoa, Bontomarannu District, Gowa Regency, Sulawesi Selatan 92171. Indonesia
a)Corresponding author: [email protected]
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Nasaruddin Salam;
Nasaruddin Salam
b)
1
Mechanical Engineering, Universitas Hasanuddin
, Jl. Malino No.8 F, Romang Lompoa, Bontomarannu District, Gowa Regency, Sulawesi Selatan 92171. Indonesia
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Andi Erwin Eka Putra;
Andi Erwin Eka Putra
c)
1
Mechanical Engineering, Universitas Hasanuddin
, Jl. Malino No.8 F, Romang Lompoa, Bontomarannu District, Gowa Regency, Sulawesi Selatan 92171. Indonesia
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Lukmanul Hakim Arma
Lukmanul Hakim Arma
d)
1
Mechanical Engineering, Universitas Hasanuddin
, Jl. Malino No.8 F, Romang Lompoa, Bontomarannu District, Gowa Regency, Sulawesi Selatan 92171. Indonesia
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a)Corresponding author: [email protected]
AIP Conf. Proc. 3115, 060015 (2024)
Citation
Budiawan Sulaeman, Nasaruddin Salam, Andi Erwin Eka Putra, Lukmanul Hakim Arma; Microstructural and mechanical properties of sago starch bioplastics (Metroxylon sp) as biodegradable plastics. AIP Conf. Proc. 23 September 2024; 3115 (1): 060015. https://doi.org/10.1063/5.0207246
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