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All Journal Pendas : Jurnah Ilmiah Pendidikan Dasar Optika : Jurnal Pendidikan Fisika
Agus Rino
Universitas PGRI Sumatera Barat
Education Physics Other

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POROSITAS POROUS MATERIAL BERBAHAN BAKU SERAT TEBU DENGAN PENGIKAT PVA Riwaldi; Agus Rino; Megasyani Anaperta
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 10 No. 04 (2025): Volume 10 No. 04 Desember 2025 Published
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v10i04.36325

Abstract

ABSTRACT Utilization of sugarcane bagasse waste with PVA binder as raw material for the manufacture of porous materials that function as soundproofing. Porous materials are materials with cavities or pores within their structure. The pores in porous materials can be filled with gas, air, liquid, or fluid, depending on the type of material used. Porous materials can be used as sound-absorbing materials. The research used an experimental method. In this study, the binder mass used was the same while the bagasse mass was varied to obtain a ratio of binder to bagasse of 17:6, 17:15, 17:24. The design of the porous material obtained an average pore diameter of 256.6 μm, the average distance between pores obtained was 780.85 μm and the fiber diameter obtained was 357 μm. Kinematically, the pores formed in the porous material are closed pores. The percentage of porosity in the porous material is 76% and the resistivity value is 326.271 Pa.s/m2. The physical properties of the porous material made from sugarcane fiber with a PVA binder, in sample 1 with a thickness of 1.4 cm has a water content of 28% and a density value of 0.3002 gr/cm3. In sample 2 with a thickness of 1.7 cm, the water content is 25% and the density value is 0.3596 gr/cm^3. In sample 3 with a thickness of 2.0 cm, the water content is 24% and the density value is 0.3949 gr/cm^3. Based on the research results, the porosity of the porous material made from sugarcane fiber with a PVA binder produces a material with an average pore diameter of 256.6 μm or 256600 nm. Based on its size, this porosity is included in the macropore section, namely the type of pores with a size larger than 50 nm, more suitable for absorbing low-frequency sound.
PENGEMBANGAN E-MODUL FISIKA DILENGKAPI MOTION GRAPHIC UNTUK PESERTA DIDIK KELAS XI SMA Tari Tri Yolanda; Megasyani Anaperta; Agus Rino
OPTIKA: Jurnal Pendidikan Fisika Vol. 9 No. 2 (2025): OPTIKA: Jurnal Pendidikan Fisika
Publisher : Department of Physics Education, Faculty of Teacher Training and Education, Universitas Flores

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/optika.v9i2.6624

Abstract

Pesatnya kemajuan teknologi informasi dan komunikasi mendorong kebutuhan akan media pembelajaran yang lebih efektif dan efisien, terutama dalam konteks pembelajaran fisika di SMAN 1 Batang Anai dimana penggunaan buku paket dan Powerpoint belum mampu meningkatkan motivasi dan pemahaman siswa terhadap pembelajaran fisika. Untuk itu, penelitian ini bertujuan mengembangkan e-modul fisika dilengkapi motion graphic untuk materi vektor kelas XI SMA, yang dirancang agar lebih menarik, mudah dipahami, dan mendukung aktivitas belajar mandiri sesuai dengan kebutuhan peserta didik. Metode penelitian yang digunakan adalah penelitian pengembangan (Research and Development) dengan model 4D (define, design, develop, dan disseminate), namun penelitian ini hanya dilaksanakan hingga tahap develop. Subjek penelitian ini adalah peserta didik kelas XI SMA N 1 Batang Anai berjumlah 28 orang dan 1 pendidik. Hasil penelitian menunjukan bahwa e-modul fisika dilengkapi motion graphic yang dikembangkan terkategori sangat valid dengan rata-rata persentase 92,20%. Selanjutnya, uji praktikalitas dilakukan kepada pendidik dan peserta didik kelas XI SMAN 1 Batang Anai, dengan hasil rata-rata persentase 89,56% dalam kategori sangat praktis. Dengan demikian, e-modul fisika dilengkapi motion graphic yang dikembangkan dinyatakan layak digunakan sebagai media pembelajaran.
Co-Authors Megasyani Anaperta, Megasyani Riwaldi Tari Tri Yolanda