SMUJOSMUJO

Nusantara BioscienceNusantara Bioscience

The addition of elasticity of bioplastic from jackfruit seed starch reinforced with cacao pod husk was studied using ethylene glycol as plasticizer. This study aimed to investigate the effect of addition of ethylene glycol as plasticizer against mechanical properties of bioplastic from jackfruit seed starch and cacao pod husk. Bioplastic was made by casting method at temperature 88.1 ̊C with ratios of cacao pod husk as fillers and jackfruit seed as starch were 9:1, 8:2, 7:3, 6:4, and 5:5 (w/v). The variations of ethylene glycol were from 0.2 (v/w) to 0.4 (v/w). The result showed that ethylene glycol could increase the mechanical properties of bioplastic. The best condition of bioplastic was achieved at ratio 7:3 in addition of ethylene glycol was 0.2 (v/w) with tensile strength of 15.40 MPa and elongation at break 2.39%. The result of FT-IR analysis indicated that bioplastics consisted of O-H group, C-H group, C=O group and C-O group. The SEM images demonstrated the bioplastic with cacao pod husk as filler and ethylene glycol as plasticizer had the fracture surfaces with the compact structure compared to that bioplastic without fillers.

The addition of cacao pod husk and ethylene glycol improved the tensile strength of the bioplastic, with optimal results achieved at a ratio of 7.2 ml/gram of ethylene glycol, yielding a tensile strength of 15.40 MPa and elongation at break of 2.The FT-IR analysis confirmed the presence of key functional groups characteristic of starch, indicating the successful incorporation of jackfruit seed starch into the bioplastic matrix.SEM analysis revealed a more compact structure in bioplastics containing cacao pod husk and ethylene glycol, suggesting enhanced material integrity.

Penelitian lebih lanjut dapat dilakukan untuk menguji pengaruh jenis plasticizer lain, seperti gliserol atau sorbitol, terhadap sifat mekanik bioplastik berbahan dasar pati biji nangka dan kulit buah kakao, untuk menemukan alternatif yang lebih ramah lingkungan dan ekonomis. Selain itu, studi mengenai optimasi rasio campuran pati biji nangka dan kulit buah kakao, serta pengaruh ukuran partikel kulit buah kakao terhadap kekuatan dan fleksibilitas bioplastik, perlu dilakukan untuk meningkatkan performa material. Terakhir, penelitian perlu difokuskan pada pengujian biodegradabilitas bioplastik ini dalam berbagai kondisi lingkungan, seperti tanah, air tawar, dan air laut, untuk memastikan potensi aplikasinya sebagai pengganti plastik konvensional yang berkelanjutan dan tidak mencemari lingkungan.

  1. Short Communication: The effect of ethylene glycol as plasticizer against mechanical properties of bioplastic... doi.org/10.13057/nusbiosci/n100202Short Communication The effect of ethylene glycol as plasticizer against mechanical properties of bioplastic doi 10 13057 nusbiosci n100202
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