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All Journal JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Inovasi dan Pembelajaran Fisika Science and Technology Indonesia Jurnal Penelitian Pendidikan IPA (JPPIPA) Unram Journal of Community Service (UJCS) Makara Journal of Science
Almafie, Muhammad Rama
Universitas Sriwijaya
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Social Sciences

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Pemintalan Eletrik dan Karakterisasi Nanopartikel-Nanofiber dari Polyvinylpyrrolidone/Ekstrak Daun Binahong (PVP/BDE) srilistari srilistari; Muhammad Rama Almafie; Leni Marlina; Jaidan Jauhari; Ida Sriyanti
JURNAL INOVASI DAN PEMBELAJARAN FISIKA Vol 8, No 2 (2021): JURNAL INOVASI DAN PEMBELAJARAN FISIKA
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jipf.v8i2.14712

Abstract

Telah berhasil dilakukan pemintalan elektrik dan karakterisasi nanopartikel dan nanofiber dari polyvinylpyrrolidon/ekstrak daun binahong (PVP/BDE). Polyvinylpyrrolidone (PVP) salah satu polimer yang paling banyak digunakan dalam industri medis atau farmasi sebagai biomaterial pengobatan untuk pengantar obat. Binahong (Anredera cordifolia (Ten.) Steenis) (BDE) Tanaman ini dikenal dengan sebutan madeira vine dipercaya memiliki kandungan antioksidan dan antibakteri. Metodologi telah berhasil digunakan untuk mensintesis komposit nanopartikel dan nanofiber PVP/BDE. Komposit dibuat dengan melarutkan PVP dengan konsetrasi 5 % b/b (nanopartikel) dan 20 % b/b (nanofiber) dengan setiap serat diberi ekstrak Daun Binahong (DBE) sebanyak 0.13 (b/b). Morfologi berhasil diobservasi menghasilkan penampakan fisik nanofiber lebih halus dan permukaan homogeny dari pada nanopartikel. Bentuk nanopartikel seperti titik-titik dengan diameter rata-rata 553±191 nm  dan nanofiber seperti pita kontinu dengan diameter 1029±192 nm. Analisis FTIR menunjukkan adanya empat perubahan puncak pada rentang 1300-1200 cm-1, 1527-1353 cm-1, 1850-1550 cm-1, 3600-3000 cm-1 mengidentifikasikan ada perenggan ikatan dari gugus ester, gugus alkena, gugus amida, dan gugus fenolik. 
PENGGUNAAN TEKNOLOGI NANO UNTUK MENGHASILKAN FILTER AIR BERSIH BAGI MASYARAKAT PERAIRAN KABUPATEN BANYUASIN Ida Sriyanti; Leni Marlina; Muhammad Rudi Sanjaya; Muhammad Rama Almafie; Jaidan Jauhari
JURNAL PENGABDIAN KEPADA MASYARAKAT Vol 28, No 2 (2022): APRIL-JUNI
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkm.v28i2.36093

Abstract

One of the communities in the waters of Air Kumbang District, Banyuasin Regency, South Sumatra Province is Sido Makmur Village. Due to its location near the high tide, where the water is foggy, rusty and acidic, people in the region are currently facing challenges in getting clean water. The implementation of this service was carried out on August 23, 2021 and September 19, 2021, which was carried out offline in the prosperous Sido Village, which was attended by 25 participants. Meanwhile, follow-up activities are carried out online. The implementation of this activity uses a mentoring approach to achieve the goals that have been set. Through the village head, the residents of Sido Makmur Village asked for assistance from lecturers of the Masters Study Program (S2) Physics Education FKIP, Fasilkom, and LPPM Universitas Sriwijaya in order to provide training and information on water purification technology based on nanofiber membranes. as a new solution to the problems faced by the people of Sido Makmur Village who are currently facing a crisis. pure water. The results showed that the people of Sido Makmur Village were very satisfied and benefited from the service related to the importance of using clean water and water filters, especially the use of nano fiber filters as a solution that the proposing team offered to help solve the problem of difficult access to clean water in the village. This shows that the dedication carried out by the proposing team has succeeded in helping to solve the problem of difficulty in accessing clean water in the village, through education on the water filter system.Penggunaan Teknologi Nano untuk Menghasilkan Filter Air Bersih Bagi Masyarakat Perairan Kabupaten Banyuasin
Preparation of PAN/PVDF Nanofiber Mats Loaded with Coconut Shell Activated Carbon and Silicon dioxide for Lithium-Ion Battery Anodes Almafie, Muhammad Rama; Dani, Rahma; Riyanto; Marlina, Leni; Jauhari, Jaidan; Sriyanti, Ida
Science and Technology Indonesia Vol. 9 No. 2 (2024): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.2.427-447

Abstract

Utilizing carbon materials derived from natural biomass holds significant promise for battery applications, owing to their low cost, abundant availability, and environmentally sustainable characteristics. However, graphite anode materials do not meet the demands of efficient batteries. Coconut shell waste has the potential to be used as activated carbon in energy storage anodes. By adding silicon dioxide (SiO2) to maintain structural stability and electrochemical reaction kinetics, the advantages of CCS can be maximized. Polyacrylonitrile/polyvinylidene fluoride (PAN/PVDF) composite polymer was used as a matrix to embed CCS/SiO2 and synthesize nanofibers via electrospinning. The resulting nanofibers had diameters ranging from to 575–707 nm, with cross-linked, porous, and beadless characteristics. Mechanical properties were measured by single-fiber micro tensile tests. The young modulus, tensile strength, and toughness of each nanofiber were successfully maintained at 13.7 ± 0.4 MPa, 34.4 ± 0.1 MPa, and 982 ± 10 kJ/m3, respectively, because of the presence of a β-crystal growth layer that facilitated efficient stress transmission. The reduction-oxidation process response had a potential difference of less than 1.286 V in the first cycle, whereas for the third and fifth cycles, it was maintained below 3.416 V. The lithium-ion diffusion coefficient was below 4.73×1013 cm2/s. Using the anode directly, as in lithium-ion batteries, provided a high capacity of 382 mAh/g after 200 cycles. Good cycle stability, with over 98% retention of the initial capacitance after 200 charge/discharge cycles, underscores its potential for application in lithium-ion batteries.
Synthesis of Activated Carbon from Coconut Shell and Recycled Styrofoam Nanofiber for Water Filtration Dani, Rahma; Ismet, Ismet; Marlina, Leni; Alisya, Rona; Aldi, Muhamad Abel Kirana; Ludiansyah, Anggi; Kurdiati, Lintang Auliya; Idjan, Meutia Kamilatun Nuha AP; Mataram, Agung; Almafie, Muhammad Rama; Sriyanti, Ida
Makara Journal of Science Vol. 28, No. 4
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Water pollution affects life sustainability; hence, several efforts have been exerted to overcome this problem. For ex-ample, nanofiber membrane technology is introduced to retain solutes while allowing only water molecules to pass through the system. Therefore, this study aimed to maximize the technology for water filtration using the electrospin-ning method by combining Styrofoam waste-based polymer with activated carbon from coconut shell waste (ACCS). The nanofiber diameter produced ranged from 590 nm to 610 nm with porous characteristics and without beads. The carbon content varied from 68.04% to 69.84%, according to the energy dispersive X-ray measurement, demonstrating the composite’s effectiveness. The Fourier transform infrared spectroscopy results also indicated carbonization and activation, along with water removal, associated with O-H stretching vibrations of alcohol and phenol, as well as N-H stretching vibrations of amino bonds. Moreover, the mechanical properties were measured using a single-fiber tensile test on X-ray diffractometry (XRD) analysis, and Young’s modulus was successfully maintained at 3,209.15 ± 632.877 and 1,839.12 ± 212.637 kPa due to the material amorphous nature. The contact angles were 126.5° and 131°, demon-strating ultra-hydrophobic properties. The addition of ACCS has led to a superior porosity structure for waste filtration. The clean water permeability test also showed that the membrane can withstand a 1–4 bar pressure for 15–60 seconds, demonstrating its strength in resisting water resistance. The trend shows the capacity of the material to potentially func-tion as a superior candidate for water filtration.
Synthesis and Characterization of Polyvinyl Alcohol (PVA) Nanofiber Membranes with Annonamuricata and Terminalia catappa Leaf Extract Fitria, Silfiyana; Almafie, Muhammad Rama; Alfikro, Ihsan; Monado, Fiber; Sriyanti, Ida; Royani, Idha
Science and Technology Indonesia Vol. 10 No. 3 (2025): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.3.837-846

Abstract

Polyvinyl alcohol (PVA) is hydrophilic, flexible, elastic, and environmentally friendly, leading to the wide use as a binder in nanofiber matrices. The nanofibers of PVA are frequently combined with extract possessing antibacterial properties for characterization. Therefore, this study aimed to produce PVA nanofibers incorporating soursop leaf extract (ALE) and catappa leaf extract (CLE) using electrospinning for the investigation of the physicochemical, mechanical, and antibacterial properties. Electron microscopy showed that the electrospun nanofibers had a yellowish-brown surface with diameters ranging from 962 nm to 1323 nm. Fourier Transform Infrared (FTIR) analysis revealed the presence of functional groups interacting through hydrogen bonding, leading to a shift in wavenumbers. The tensile strength of PAC-1, PAC-2, and PAC-3 nanofibers decreased from 8.46 MPa to 4.27 MPa, followed by a reduction in Young’s modulus from 20.2 MPa to 0.89 MPa. The effect of extract concentration on the reduction in tensile strength and Young’s modulus was related to aggregation in certain areas of the nanofibers and weakened intermolecular polymer interactions. Pure extract had strong antibacterial activity and nanofiber membranes had moderate activity with inhibition zones ranging from 12.3 to 16.8 mm and 8.0 to 14.4 mm, respectively. The results showed that the produced fibers could be used in the biomedical field for wound dressings and filtration, as well as in textiles.
The morphology of polyvinylpyrrolidone nanofibers containing Anredera cordifolia leaves Sriyanti, Ida; Almafie, Muhammad Rama; Nugraha, Yuda Prasetya; Idjan, Meutia Kamilatun Nuha Ap; Jauhari, Jaidan
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 10 No 2 (2021): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v10i2.8820

Abstract

The electrospinning method has been used successfully to make polyvinylpyrrolidone nanofiber containing Anredera cordifolia leaves (BLE). The research methods used were qualitative and pure experiment method. Polyvinilpirolidone nanofibers containing BLE were prepared with three mass variations of the polyvinylpyrrolidone (% w/w), namely 12%, 10%, and 8% w/w, respectively. The results of the macroscopic photo show that the fiber structure looks white for PVP nanofibers and yellow for PVP/BLE nanofibers. The fiber morphology was analyzed using SEM and the results showed that PVP and all PVP/BLE nanofibers were like a continuous strand of crossbars with a diameter of 590 – 1190 nm. The decrease in the concentration of the PVP polymer led to a reduction in the diameter of the resulting nanofibers. The coefficients of variance (ε), of the PVP, BLE1, BLE2, and BLE3 nanofibers were 0.06, 0.09, 0.11, and 1.22, respectively. The physicochemical structure of the nanofibers was evaluated using XRD and FTIR. The chemical analysis (FTIR) showed that there was a molecular interaction between Anredera cordifolia leaves extract and polyvinylpyrrolidone in the form of hydrogen bonds. The physics analysis (XRD) shows the effect of the electrospinning process, which is to change the structure of BLE crystals to semi crystals. The application of PVP/BLE nanofiber for wounds dressing
Pengaruh Parameter Proses Electrospinning pada Komposit Polyvinylidene Fluoride/Polyacrylonitrile Nanofiber Sriyanti, Ida; Almafie, Muhammad Rama; Dani, Rahma; Idjan, Meutia Kamilatun Nuha Ap; Partan, Radiyati Umi; Sanjaya, M Rudi; Jauhari, Jaidan
Jurnal Penelitian Pendidikan IPA Vol 9 No 9 (2023): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i9.4840

Abstract

PAN cannot be used as a stand-alone nanofiber, so it needs to be modified through copolymerization with other polymers, such as PVDF. It is composite mutually beneficial for both PVDF/PAN polymers. Study aims to see the effect of process parameters, such as voltage, flow rate and needle tip distance of PVDF/PAN composite nanofiber as well as molecular interaction and crystal structure, to confirm the presence of polymer in the nanofiber composite. The nanofibers with solution parameters PN1: PVDF 6% and PAN 8%, PN2: PVDF 6% and PAN 10%, and PN3: PVDF 6% and PAN 12% were prepared using electrospinning. Morphology of the process parameters of voltage (12kV, 16kV, 18kV), flow rate (30 μl/min, 60 μl/min, 90 μl/min) and needle tip distance (75 mm, 100 mm, 125 mm) were observed. The results showed straight and continuous fibre morphology, with a smooth surface and no beaded structure, with homogeneous fibre distribution with an increase in diameter from 394 ± 79 nm (NF1) to 851 ± 89 nm (NF3). The optimal state was in the solution of PN2: PAN 10% (w/w) and PVDF 6% (w/w), High Voltage 12 kV, Flow Rate PN3: 60 μl/min, and Needle to Collector Distance 75 mm.
Tren Terbaru Nanofiber Polikaprolakton Elektrospun: Perspektif Bibliometrik Lima Tahun dari 2019 hingga 2023 Almafie, Muhammad Rama; Dani, Rahma; Royani, Idha; Sriyanti, Ida
Jurnal Penelitian Pendidikan IPA Vol 11 No 2 (2025): February
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i2.10191

Abstract

Nanofiber materials have emerged as a focal point of advanced research due to their exceptional properties. Polycaprolactone, a biodegradable and biocompatible polyester, has garnered particular interest for applications spanning tissue engineering, drug delivery, wound healing, and filtration. The electrospinning process facilitates precise control over PCL nanofiber morphology and functionality, enhancing its application potential. This investigation employs bibliometric analysis to elucidate global research trends in electrospun PCL nanofibers from 2019 to 2023. Utilizing the Scopus database, 255 relevant publications were identified through rigorous inclusion criteria, focusing on works that address PCL nanofibers, are published in English, and meet peer-reviewed standards. Quantitative tools, including VOSviewer and Harzing’s Publish or Perish, were utilized to analyze research trajectories, citation dynamics, and collaborative networks. Results underscore a predominant focus on biomedical applications, particularly drug delivery and tissue engineering. Geographically, research contributions are led by the Netherlands (28.63%), the United States (25.10%), and the United Kingdom (24.31%). The International Journal of Biological Macromolecules emerged as the most influential journal, contributing 22 articles (10%) and receiving 1,424 citations. Despite significant advancements, critical gaps remain, notably in scaling production processes and diversifying applications beyond the biomedical domain.
The Enhancement of Teacher Competency Through Assistance in Creating Augmented Reality-Based Interactive E-Modules at SMAN 10 Palembang Sriyanti, Ida; Marlina, Leni; Mataram, Agung; Sanjaya, Muhammad Rudi; Syahputri, Selvia Mariska; Dani, Rahma; Almafie, Muhammad Rama
Unram Journal of Community Service Vol. 6 No. 4 (2025): December: In Progress
Publisher : Pascasarjana Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ujcs.v6i4.1269

Abstract

Educational transformation in the Industrial Revolution 4.0 era demands that teachers adapt to digital technology and develop innovation-based learning. However, the results of a preliminary survey indicated that a majority of teachers at SMAN 10 Palembang lacked skills in creating digital learning media and were unfamiliar with Augmented Reality (AR) technology. This community service activity aimed to improve teacher competence through mentoring in the creation of AR-based interactive e-modules as a 21st-century learning innovation. The implementation methods included socialization, technical training, a coaching clinic, and an evaluation of outcomes using a pre-test, post-test, and a participant satisfaction survey. Fifteen teachers actively participated in this activity. The paired sample t-test analysis revealed a significant increase between the pre-test (M = 47.00; SD = 7.75) and post-test scores (M = 91.67; SD = 4,87), with t = –18.506, p = 0.000 (p < 0.05). And the Cohen’s d = 9.35, categorized as a very large effect. This finding demonstrates that the mentoring program was effective in enhancing teacher competence in developing AR-based interactive e-modules. Furthermore, the results of the participant satisfaction survey reinforced the program's effectiveness. A total of 73.3% of participants stated they were "very satisfied" with the quality of the mentoring and facilitators, while 80% felt their e-module creation skills had significantly increased. Regarding the AR integration aspect, 87% of participants expressed high satisfaction with the clarity of the training and the implementation results. Meanwhile, 67% rated the activity as having a direct impact on enhancing their instructional technology integration skills. All participants demonstrated a high commitment to sustainably implementing the training outcomes in their respective schools. Consequently, this program is proven to have a positive impact on enhancing digital literacy, pedagogical competence, and teacher readiness to face the challenges of 21st-century, technology-based learning.
Co-Authors Agung Mataram Aldi, Muhamad Abel Kirana Alfikro, Ihsan Alisya, Rona Dani, Rahma Fiber Monado Fitria, Silfiyana Ida Sriyanti Ida Sriyanti Ida Sriyanti Idha Royani Idjan, Meutia Kamilatun Nuha Ap Ismet Ismet, Ismet Jaidan Jauhari Jaidan Jauhari Kurdiati, Lintang Auliya Leni Marlina Leni Marlina Ludiansyah, Anggi Meutia Kamilatun Nuha Ap Idjan Muhammad Rudi Sanjaya Nugraha, Yuda Prasetya Radiyati Umi Partan, Radiyati Umi Riyanto Sanjaya, M Rudi Sanjaya, Muhammad Rudi srilistari srilistari Syahputri, Selvia Mariska Yuda Prasetya Nugraha