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All Journal Jurnal Sains Materi Indonesia Komunikasi Fisika Indonesia Jurnal Fisika Unand Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) Jurnal Hilirisasi IPTEKS (JHI) Jurnal Ilmu Fisika INTEGRITAS : Jurnal Pengabdian BERNAS: Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian kepada Masyarakat Nusantara Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Indonesian Journal of Community Empowerment and Service
Alimin Mahyudin
Jurusan Fisika FMIPA Universitas Andalas
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Karakterisasi Sifat Mekanik Film Plastik dari Pati Biji Nangka dengan Variasi Nanoserat Pinang Paridah Anum; Alimin Mahyudin
Jurnal Fisika Unand Vol 11 No 2 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.11.2.146-152.2022

Abstract

Telah dilakukan penelitian mengenai karakterisasi sifat mekanik film plastik dari pati biji nangka dengan variasi nanoserat pinang. Pembuatan film plastik dilakukan menggunakan metode solution casting. Persentase nanoserat yang digunakan yaitu 0%, 5%, 10%, 15%, 20% dan satu sampel 25% tanpa pati. Pengujian sifat mekanik meliputi uji kuat tarik, elongasi, dan modulus elastisitas. Sampel dikarakterisasi menggunakan Particle Size Analyzer (PSA), Scanning Electron Microscope (SEM) dan Fourier Transform Infrared (FTIR). Hasil PSA menunjukkan nanoserat memiliki diameter 79-187 nm. Hasil karakterisasi SEM diperoleh bentuk permukaan film plastik yang halus. Hasil FTIR menunjukkan adanya gugus fungsi C=O dan C-O merupakan gugus fungsi hidrofilik yang mengindikasikan film plastik mampu terdegradasi. Kondisi optimum persentase nanoserat yaitu 25% tanpa menggunakan pati yaitu kuat tarik 11,23 Mpa, elongasi 52,17 %, elastisitas 21,525 Mpa. Hasil yang diperoleh telah memenuhi standar kuat tarik plastik biodegradable JIS 2-1702.
Pengaruh Variasi Massa Gliserol Terhadap Sifat Mekanik Film Plastik Pati Umbi Talas Berpenguat Nano Serat Pinang Nurul Hasanah; Alimin Mahyudin
Jurnal Fisika Unand Vol 11 No 2 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.11.2.194-200.2022

Abstract

Telah dilakukan penelitian mengenai pengaruh variasi massa gliserol terhadap sifat mekanik film plastik pati umbi talas berpenguat nano serat pinang. Variasi massa gliserol yaitu (0.5, 0.75, 1, 1.25 , 1.5) gram dan satu sampel tanpa pati. Sifat mekanik yang diujikan yaitu kuat tarik, elongasi, elastisitas, dan biodegradabilitas. Karakterisasi sampel meliputi PSA, FTIR, dan SEM. Pengujian PSA didapatkan ukuran nano serat sebesar 187 nm, 110 nm, dan 69 nm dengan distribusi ukuran partikel 25% , 50%, dan 75%. Hasil FTIR menunjukkan adanya gugus fungsi C=O dan C-O merupakan gugus fungsi hidrofilik yang mengindikasikan film plastik mampu terdegradasi. Pengujian SEM memperlihatkan adanya gumpalan pada permukaan film dikarenakan kurang homogennya larutan. Uji kuat tarik diperoleh nilai tertinggi 9,015 MPa dan nilai terendah sebesar 5,518 MPa, nilai ini telah memenuhi standar kuat tarik plastik biodegradable JIS 2-1702. Uji elongasi diperoleh nilai terendah 44,714% dan tertinggi 50,142%, nilai ini telah memenuhi SNI tentang elongasi plastik. Uji elastisitas diperoleh nilai tertinggi 17,797 MPa dan terendah sebesar 16,668 MPa. Nilai biodegradabilitas meningkat seiring dengan meningkatnya variasi massa gliserol.
Pengaruh Komposisi Kitosan Terhadap Sifat Fisis Dan Biodegradable Film Komposit Nanoserat Pinang Dengan Castor Oil Sebagai Plasticizer Ayuzia Puspa Indah; Alimin Mahyudin
Jurnal Fisika Unand Vol 11 No 4 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.11.4.501-507.2022

Abstract

Research has been carried out on the effect of chitosan composition on the physical and biodegradable properties of areca nut nanofiber composite films with castor oil as a plasticizer. Samples were made using the solution casting method. The variations of chitosan used were 0 g, 0.56 g, 0.7 g, 0.84 g, 1.4 g and one sample used starch with a variation of 0.84 g chitosan. The physical properties of the samples tested were thickness test, FTIR test and FESEM test. Mechanical properties tests include tensile strength, elongation, elasticity, and biodegradation tests. The samples were characterized using a Particle Size Analyzer (PSA) to determine the size of the nanofibers, a Field Emission Scanning Electron Microscope (FESEM) to determine the sample morphology and Fourier Transform Infrared (FTIR) to determine the functional groups. PSA results showed that the nanofibers had a diameter of (79-187) nm. The results of FESEM characterization obtained the shape of a hollow biodegradable plastic surface. The FTIR results indicate the presence of a C=O functional group and C-O is a hydrophilic functional group which indicates that biodegradable plastic is capable of being degraded. The best tensile strength results in the chitosan variation of 0.84 g without starch with a value of 20.04 MPa, the best elongation in the 0.7 g chitosan variation with a value of 138.56%, elasticity 198.66 MPa in the 0.84 g chitosan variation with the addition of starch, the average thickness is 0.25 mm. The higher the variation of chitosan, the thickness, tensile strength, elasticity, and biodegradation of biodegradable plastics increase, while elongation decreases
Karakterisasi Papan Beton Ringan Berpenguat Batang Jagung Deora Murza Oktora; Alimin Mahyudin
Jurnal Fisika Unand Vol 11 No 4 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.11.4.442-447.2022

Abstract

Telah dilakukan penelitian tentang karakterisasi papan beton ringan berpenguat batang jagung. Penelitian ini bertujuan untuk mengetahui persentase optimum serat batang jagung yang dapat mempengaruhui sifat fisis dan mekanis papan beton ringan. Persentase serat yang digunakan adalah 0%, 0.3%, 0.6%, 0.9%, 1.2%, dan 1.5%. Sifat fisis yang diuji pada penlitian ini adalah densitas, porositas, dan daya serap ai dengan ukuran sampel 5 cm x 5 cm x 1 cm. Sedangkan sifat mekanis yang diuji adalah kuat tekan dengan ukuran sampel 5 cm x 5 cm x 1 cm dan kuat lentur dengan ukuran sampel 20 cm x 5 cm x 1 cm. Berdasarkan hasil pengujian densitas terendah didapatkan pada persentase serat 1.5% sebesar 1.39 g/cm3, nilai porositas terendah pada persentase serta 0% sebesar 9.38%, dan nilai daya serap air terendah pada persentase serat 0% sebesar 5.96%. Sedangkan untuk nilai kuat tekan tertinggi didapatkan pada persentase serat 1.5% sebesar 56.27 kg/cm2 dan nilai kuat lentur tertinggi pada persentase serat 1.5% sebesar 40.5 kg/cm2. Nilai densitas, porositas, daya serap air, dan kuat lentur sudah memenuhui standar SNI 03-2105-2006 dan SNI 03-2104-1991 namun untuk kuat tekan belum memenuhi standar SNI.
Karakterisasi Sifat Mekanik dan Biodegradable Komposit Hibrid Polipropilena dengan Pati Singkong Menggunakan Serat Pinang dan Serat Eceng Gondok Yazid Reza Hanovatias; Alimin Mahyudin
Jurnal Fisika Unand Vol 12 No 3 (2023)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.12.3.458-464.2023

Abstract

Telah dilakukan penelitian tentang karakterisasi sifat mekanik dan biodegradable komposit hibrid polipropilena dengan pati singkong menggunakan serat pinang dan serat eceng gondok. Penelitian ini bertujuan untuk menghasilkan komposit hibrid yang kuat dan ramah lingkungan  Komposisi serat pinang dan eceng gondok divariasikan dengan rasio perbandingan 1:1. Persen volume serat yang digunakan yaitu 5%, 10%, 15%, 20%,  dengan panjang serat 3 mm. Pembuatan sampel pada penelitian ini menggunakan metode hand lay-up. Metode hand lay-up merupakan proses pelapisan serat dengan matrik yang dilakukan secara manual. Penelitian ini dilakukan pengujian kuat tarik, regangan, modulus elastisitas dan uji biodegradable. Berdasarkan hasil penelitian didapatkan nilai kuat tarik dan modulus elastisitas tertinggi yaitu 18,37 Mpa dan 3549 Mpa pada fraksi volume serat 5%. Nilai regangan tertinggi yaitu 0,0064 % pada fraksi volume serat 20%. Pada laju degradasi didapatkan hasil sebesar 0,03853% per hari. Maka dari hasil penelitian dapat disimpulkan nilai modulus elastisitas sudah memenuhi standar dashboard mobil.
Pengaruh Penambahan Serat Pinang Terhadap Sifat Fisik dan Mekanik Papan Beton Ringan dengan Fly ash Sebagai Filler Muhammad Blestynsky Renaldi; Alimin Mahyudin
Jurnal Fisika Unand Vol 12 No 4 (2023)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.12.4.584-590.2023

Abstract

Research has been carried out on the effect of adding betel nut to the physical and mechanical properties of lightweight concrete boards with fly ash as filler. Variation of areca fiber 0.2%; 0.4%; 0.6%; 0.8%;1% by using a random arrangement of fibers. Physical and mechanical properties tested include density, water absorption, porosity, compressive strength, and flexural strength measured by Universal Testing Machine (UTM). Based on the test results, adding areca fiber mass is inversely proportional to density and proportional to porosity and water absorption. The lowest density value in the 1% fiber variation sample is 2 gr/cm3, the lowest porosity value is 19.56% with the composition without fiber and fly ash, and the lowest water absorption value is 9.47% in the composition without fiber and fly ash. Fly ash with betel nut ableto increase the value of the compressive strength and flexural strength of the lightweight concrete board sample. The highest compressive strength value in the addition of fiber is 78.5 kg/cm3 with a fiber composition of 1%, while the highest flexural strength value is 66 kg/cm3 with a fiber composition of 1%. The porosity and water absorption values of the sample had SNI 03-2105-2006 standard. In addition, the compressive strength value obtained from the sample test meets the SNI 03-3449-2002 standard.
Pengaruh Suhu Terhadap Sifat Listrik Polimer Konduktif Polianilin TiO2 Berpenguat Nano Serat Pinang Hafiza Rahmi Zul Afri; Alimin Mahyudin
Jurnal Fisika Unand Vol 13 No 1 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.1.36-41.2024

Abstract

This research serves to see the effect of temperature on conductive polymers, and the temperature variations used are 27 ℃, 37 ℃, 47 ℃, 55 ℃, 67 ℃, and 77 ℃. The polyaniline used is pure polyaniline and a mixture of polyaniline, TiO2, and nano areca fiber with a mixture percentage of 70%: 27%: 3%.  Polyaniline is produced from polymerization of aniline monomer and ammonium peroxydisulfate and nano arecafibers are used from nano arecafibers that have been produced in previous research. Electrical properties testing consisted of electrical conductivity and capacitance tests using an LCR meter. The results showed the lowest conductivity value at 27 ℃ was 0.18 × 10-2 S /cm, and the highest conductivity value at 77 ℃ was 1.22 × 10-2 S/cm for pure polyaniline, while the mixed polyaniline obtained the lowest conductivity value at 27 ℃ was 0,85 × 10-2 S/cm, and the highest value at 77 ℃ was 3.61 × 10-2 S/cm. For the capacitance test, the highest value was obtained at 6.8 μF and 18.9 μF. From the results obtained, the higher the temperature, the higher the conductivity value produced, while the capacitance results show that the higher the temperature used, the lower the capacitance value.
Pengaruh Persentase Fly Ash terhadap Sifat Fisik dan Mekanik Papan Beton Ringan dengan Filler Serat Sabut Pinang Hana Aulia; Alimin Mahyudin
Jurnal Fisika Unand Vol 13 No 4 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.4.452-458.2024

Abstract

Research has been conducted on the effect of fly ash percentage towards physical and mechanical characteristics of lightweight concrete board with coir fiber as a filler. The study was aim to determine the effect of fly ash percentage with areca fiber as a filler on the physical and mechanical properties of lightweight concrete boards. The percentages of fly ash were 0%; 5%; 10%; 15%; and 20% respectively. The size of areca fiber was 0.2%, and the length of the fiber was 1 cm. Samples with 5 cm x 5 cm x 1 cm were used to measure density, porosity, and compressive strength, while samples with 20 cm x 5 cm x 1 cm were used for flexural strength testing. The lightweight concrete board was tested after 28 days. Compressive and flexural strength testing were conducted using a universal testing machine (UTM). Based on the results, the lowest density value was obtained at 20% fly ash content which was 1.06 g/cm3, while the lowest porosity value was obtained at 0% fly ash content which was 26.53%. The density values obtained from the research results were inversely related to the porosity values. The highest compressive strength of lightweight concrete boards without fly ash was achieved, with a value of 36.93 kg/cm2. The highest compressive strength value with fly ash was 30.20 kg/cm2 at 10% fly ash content. The highest flexural strength was 25.5 kg/cm2 at 20% fly ash content. The higher the fly ash content used, the greater the flexural strength value. The density and flexural strength values have met the SNI 03-2105-2006 and SNI 03-2104-1991 standards, but the porosity and compressive strength have not yet fulfilled the SNI standards.
KARAKTERISTIK PAPAN PARTIKEL DARI KULIT KAKAO DAN SERAT PINANG DENGAN VARIASI POLYMERIC METHYLENE DIPHENYL DIISOCYANATE Yanandra Amelia Putri; Alimin Mahyudin
Jurnal Fisika Unand Vol 13 No 5 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.5.671-676.2024

Abstract

Research has been carried out to analyze the effect of the percentage of polymeric methylene diphenyl diisocyanate (PMDI) on the physical and mechanical properties of particleboard made from cocoa shells and areca fiber. This research uses a ball mill to obtain the particle size that passes through an 80 mesh sieve. The physical properties tested were density and water content, while the mechanical properties tested were flexural strength and compressive strength using the Universal Testing Machine (UTM). The PMDI variations used are 4%, 6%, 8% and 10%. The density values obtained ranged from 0.97-1.13 g/cm3, water content values ranged from 7.3 - 9.11%, compressive strength values ranged from 216.63-285.02 kg/cm2 and flexural strength values ranged from 1713 .97-2235.23 kg/cm2. The best particle board is particle board with a PMDI content of 8%. The water content and compressive strength values of particle board meet SNI 03-2105-2006, but the density and flexural strength values do not meet SNI 03-2105-2006. Based on the density value of the particle board, the particle board produced is a type of high density particle board.
Pengaruh Fraksi Volume Serat Pinang dan Serat Rami Terhadap Sifat Fisis dan Mekanik Komposit Hibrid Sebagai Bahan Dasar Dashboard Mobil Annisa, Hafizha Fitri; Mahyudin, Alimin
Jurnal Fisika Unand Vol 14 No 1 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.1.68-74.2025

Abstract

Research has been conducted on the effect of the volume fraction of jute fiber and areca nut fiber on the physical and mechanical properties of hybrid composites as a base material for car dashboards. This research aims to produce hybrid composites that have mechanical properties that are in accordance with the SNI of car dashboards and are environmentally friendly. The volume fraction of areca fiber and jute fiber is varied with a ratio of 1:1. The method of making samples using the hand lay-up method, which is a method of coating the fibers with the matrix manually. In this study, tensile strength, impact strength, density, and biodegradation tests were conducted. Based on the results of the study, the highest tensile strength value was at a volume fraction of 2% areca nut fiber and 2% jute fiber, namely 20.41 MPa. The highest impact strength value is in the volume fraction of 6% areca nut fiber and 6% jute fiber, which is 0.0206 J/mm^2. The highest density value was found in the volume fraction of 2% areca nut fiber and 2% jute fiber, namely 0.88 g/cm^3. The highest degradation rate was obtained in the volume fraction of 6% areca nut fiber and 6% jute fiber, namely 517%/day. From the research results, the optimum sample composition is in the variation of volume fraction of 2% areca fiber and 2% jute fiber.
Co-Authors A. Fadhil Desafa Adrial, Rico Afdal Afdal Afdal Afdal Afdhal Muttaqin Agus Taufiq Ahmad Fauzi Pohan Al Rahman Annisa, Hafizha Fitri Arif Budiman Arif Budiman Arsal Chayri Iby Astuti Astuti Astuti - Awaluddin - Ayuzia Puspa Indah Betta Centaury Dahyunir Dahlan Damayanti, Elok Dedi Mardiansyah Defta Eka Sari Della Amelia Deora Murza Oktora Deri Wahyuni Devi Yunita Devi Yunita Devi Yunita Dian Fitriyani Dian Fitriyani Dian Milvita Dwi Pujiastuti Dwi Pujiastuti Dwi Puryanti Elistia Liza Namigo, Elistia Elvaswer Engkir Sukirman Fajar Anugrah Fani Anjelina Feriska Handayani Feriska Handayani Irka, Feriska Handayani Fiqi Diyona Firda Yulia Citra Geby Sri Ayu Oktavia Habib Andrestama Hafiza Rahmi Zul Afri Haldis Alvaro Hana Aulia Hanifah Karmuliani Harmadi Harmadi Harmadi Harmadi Hilda Trisna Husna Dhia Imam Taufiq Imam Taufiq Indah Pratiwi Desha Putri Ira Febri Winda Kgs Haprido Lara Putri Jatmika Lovely Dwina Putri M. Ali Shafii M. Wahyu Ramadhani Mardiyanto - Mardiyanto Mardiyanto Mardiyanto Mardiyanto Marzuki Marzuki Mega Dwisa Meqorry Yusfi Meri Darmawi Meri Darmawi Mila Putri Artika Mohammad Ali Shafii Mona Vadila Muhammad Blestynsky Renaldi Muhammad Fachrul Rozi Muldarisnur, Mulda Mutia Sukma Dewi Mutya Vonnisa Nini Firmawati Nur 'Arifah Nurul Annisa Nurul Hasanah Nurul Nabila Olly Norita Tetra Paridah Anum Rahmat Rasyid Ramacos Fardela Randa Randa Rasyid Ridho Ressi Anggraini Riefli Fatmi Salim Muhaimin Shelly Monica Sindy Dwi Putri Dynanty Solly Aryza Sonia Yong Lisha Sri Handani Sri Oktamuliani Suci Olanda Syahfandi Ahda Syahfandi Ahda Syahfandi Ahda Syahfandi Ahda Trengginas Eka Putra Trengginas Eka Putra Sutantyo Uchi Delfia Ummi Qorina Ummi Qorina Usna, Sri Rahayu Alfitri Vadila, Mona Vinny Alvionita Wildian Wildian Yanandra Amelia Putri Yazid Reza Hanovatias Yosi Sylvia Yuliana Yoniza Yusfi, Meqqory Zozy Aneloi Noli Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi, Zulfi