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All Journal Jurnal Pendidikan (Teori dan Praktik) Jurnal Penelitian Pendidikan IPA (JPPIPA) Al-Kimia IJCER (International Journal of Chemistry Education Research) JURNAL EDUCATION AND DEVELOPMENT Social, Humanities, and Educational Studies (SHEs): Conference Series Journal of Educational Chemistry (JEC) JP (Jurnal Pendidikan) : Teori dan Praktik Arfak Chem: Chemistry Education Journal Science Education and Development Journal Archives Journal of The Indonesian Society of Integrated Chemistry
Nugroho, Deni Ebit
UIN Walisongo Semarang
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Neuroscience Physics Social Sciences Other

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Profiling and characterizing of banana (Musa paradisiaca) flower bracts-based bioplastic with sorbitol as a plasticizer Ebit Nugroho, Deni; Tri Suryandari, Ervin; Hadi Kusuma, Hamdan; Mujiasih; Kustomo
Al-Kimia Vol 13 No 1 (2025): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

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Abstract

Banana flower bracts (BFB) are a promising source of starch as a bioplastic material. However, starch-based bioplastics products are primarily stiff and rigid to shape. Polyvinyl alcohol (PVA) may improve the elasticity and increase force resistance of starch-based bioplastics. Therefore, this study aims to analyze the characteristics and determine the optimal combination of BFB starch and PVA concentration for bioplastic production. The BFB were chopped and boiled until soft, soaked in sodium bisulfite solution for 30 minutes, and dried to produce fine powder. The powder was macerated in clean water for two days to produce starch, which was then combined with 0.5 chitosan and various concentrations of PVA. Physical characteristic tests, including Force, tensile strength, elongation, and biodegradation, were measured to determine the best composition. This study found the combination of 0.5 gr of BFB starch, 0.5 gr of chitosan, and 10 ml of PVA improved the capability of bioplastic to hold more than 13 N and tensile strengths up to 25 MPa. Furthermore, increasing BFB concentration is in line with enhanced durability; however, it reduces flexibility. Conversely, PVA significantly increased plasticity and elasticity while maintaining high biodegradability (61.2% per day).
The Influence of Steam Project-Based Chemistry Learning with the Assistance of Chemsketch on Learning Outcomes and Creative Thinking Ability on Macromolecular Materials Ummah, Miftahun Nafiul; Nugroho, Deni Ebit
Social, Humanities, and Educational Studies (SHES): Conference Series Vol 6, No 4 (2023): Social, Humanities, and Educational Studies (SHEs): Conference Series
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/shes.v6i4.80876

Abstract

This research aims to determine the effect of STEAM Project-based chemistry learning assisted by ChemSketch on the learning outcomes and creative thinking abilities of students at SMA N 1 Kendal. This research is quantitative research using the Quasi Experimental method. The quasi experimental design in this research is nonequivalent control group design. Samples were taken using cluster random sampling technique. The population of this study was all students in class XII MIPA SMA N 1 Kendal. Chemistry learning using the STEAM Project approach has a moderate effect in improving student learning outcomes as evidenced by the t-test value of the difference between two average learning outcomes of 0.031 (sig. (2 tailed) < 0.05) which means Ha is accepted and the Effect Size test of 0.53. Meanwhile, the STEAM Project approach in this research had no effect on students' creative thinking abilities due to the lack of variety of questions and limited time during learning. This is proven by the t-test, the difference between the two average creative thinking abilities is 0.109 (sig. (2 tailed) > 0.05).
The Effect of Using Devlabs Learning Media on Improving Students' Understanding of Concepts on Buffer Solution Materials Nugroho, Deni Ebit; Khasanah, Rania Nurul
Social, Humanities, and Educational Studies (SHES): Conference Series Vol 6, No 4 (2023): Social, Humanities, and Educational Studies (SHEs): Conference Series
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/shes.v6i4.81282

Abstract

Media pembelajaran belum dimanfaatkan secara optimal menjadi salah satu penyebab rendahnya pemahaman konseptual siswa. Salah satu media pembelajaran yang dapat digunakan untuk membantu mengoptimalkan kemampuan dalam mengingat dan memahami suatu materi yaitu media develabs. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan media pembelajaran devlabs terhadap peningkatan pemahaman konsep siswa pada materi larutan penyangga. Penelitian ini merupakan jenis penelitian quasi ekperimental research dengan desain non-equivalent control group design. Penelitian ini dilakukan di SMA N 1 Kaliwungu Kendal, sampel pada penelitian ini adalah siswa kelas XI MIPA 3 dan XI MIPA 5. Teknik sampling yang digunakan yaitu claster random sampling. Teknik analisis data pada penelitian ini yaitu analisis pemahaman konsep, uji perbedaan dua rata-rata, uji pihak kanan, dan uji effect size. Hasil penelitian menunjukkan terjadi peningkatan pemahaman konsep siswa setelah menggunakan media pembelajaran devlabs dengan uji independent sampel t-test yaitu 0,000 < 0,05. Hasil uji effect size sebesar 3,80% dengan Kategori “tinggi”.
Co-Authors Ani Rusilowati Fachry Abda El Rahman Hadi Kusuma, Hamdan Harahap, Lenni Khotimah Julia Mardhiyah Khasanah, Rania Nurul Kustomo Mujiasih Mujiasih Prayitno, Mohammad Agus Putut Marwoto Sigit Priyatmoko Sri Mulyanti Tri Suryandari, Ervin Ulfa Berlian Awwalin Ulfa Lutfianasari Ummah, Miftahun Nafiul Wiwi Isnaeni