Article Per Year (5 Year)
p-Index From 2019 - 2024
0.888
P-Index
This Author published in this journals
All Journal Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Jurnal Kumparan Fisika Jurnal Mitrawarga
Parmin Lumban Toruan
Jurusan Fisika, Fakultas Sains Dan Teknologi, Universitas PGRI Palembang
Agriculture, Biological Sciences & Forestry Humanities Chemistry Education Environmental Science Law, Crime, Criminology & Criminal Justice Mathematics Physics Social Sciences

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
SIFAT OPTIK DAN PERMITIVITAS LISTRIK MEMBRAN POLIMER PADAT KITOSAN/PEO Kartika Sari; Sunardi Sunardi; Agung Bambang Setio Utomo; Parmin Lumban Toruan; Evi Yulianti; Mashadi Mashadi
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 17 No. 2 (2020): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v17i2.4987

Abstract

Synthesis and characterization of the chitosan/PEO solid polymer membranes were carried out to determine the morphological structure, crystal structure and functional groups. Synthesis of the chitosan/PEO solid polymer membrane was carried out by solution casting method. Characterization was performed using the FTIR (Fourier Transform Infra Red), XRD (X-ray Diffraction), SEM (Scanning Electron Microscopy) and EIS (Electrochemical Impedance Spectroscopy). The FTIR results showed that the chitosan/PEO solid polymer membrane interacted with the –OH and C-H functional groups at wave numbers 1500 - 945 cm-1 and formed a bending bond between functional groups  of the C-C and –NH3. The SEM results showed that the homogeneous agglomeration was formed on the membrane surface due to the addition of PEO powder. This causes the formation of bonds between atoms to unstable. The XRD results obtained that the chitosan/PEO solid polymer membrane pattern tended to have a semicrystalline structure. The graph of the EIS results shows the electric permittivity does not form a semicircular arc. There was no grain response on the chitosan / PEO solid polymer membrane. The results of SEM, XRD, FTIR and EIS characterization show that chitosan /PEO solid polymer membranes can be used as an alternative to solid polymer electrolytes.
Kajian Hasil Pengujian X-Ray Diffraction (XRD) Dan Konstanta Dielektrik Membran Polimer Kitosan/PEG4000 dengan Lithium Triflat (LiCF3SO3) Kartika - Sari; Agung Bambang Setio Utomo; Parmin Lumban Toruan; Ampala Khoryanton
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 18 No. 2 (2021): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v18i2.6717

Abstract

Synthesis and testing of chitosan/PEG4000 solid electrolyte polymer membrane with LiCF3SO3 salt as a surfactant was carried out to determine crystalline size and type of structure using X-Ray Diffraction (XRD) and dielectric constant using Electrochemical Impedance Spectroscopy (EIS). The manufacture of chitosan/PEG4000 electrolyte polymer membrane with LiCF3SO3 salt using the solution casting method. The samples used in the XRD and EIS tests were in the form of solid electrolyte polymer membranes of chitosan, chitosan/PEG4000 and chitosan/PEG4000 with LiCF3SO3 salt. XRD test showed that the crystalline size of the chitosan, chitosan/PEG4000, and chitosan/PEG4000 electrolyte polymer membranes with LiCF3SO3 salt experienced a 2θ angle shift and formed a semicrystalline phase. The peak intensity increase occurred after chitosan was added with PEG4000 with LiCF3SO3 salt. The crystalline size obtained for the electrolyte polymer membrane of chitosan, chitosan/PEG4000 and chitosan/PEG4000 salt LiCF3SO3 was 4,002 nm; 2,474 nm and 4,183 nm. Meanwhile, the type of structure produced by chitosan, chitosan/PEG4000 and chitosan/PEG4000 electrolyte polymer membranes with LiCF3SO3 salt is a semicrystalline phase. The dielectric constant for solid electrolyte polymer membranes of chitosan/PEG4000, and chitosan/PEG4000 with LiCF3SO3 salt are 3,4 and 16,6 x 103. XRD and EIS test results show that chitosan/PEG4000 polymer membrane with LiCF3SO3 salt as a surfactant can be applied as an alternative to solid electrolyte polymer secondary batteries.
Pelatihan Penyusunan Modul Praktikum di SMAN 6 Ogan Komering Ulu Sagita Charolina Sihombing; Parmin Lumbantoruan
Jurnal Mitrawarga Vol. 1 No. 2 (2022): Jurnal Mitrawarga
Publisher : Fakultas Ilmu Sosial dan ilmu Politik

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (412.246 KB) | DOI: 10.23960/jmw.v1i2.21

Abstract

This community service was carried out at SMA Negeri 6 Ogan Komering Ulu (OKU), South Sumatra. SMA Negeri 6 Ogan Komering Ulu (OKU) is one of the senior high schools in Ogan Komering Ulu Regency, South Sumatra Province that already has Superior accreditation and has fairly good facilities. The available facilities include a fairly good school building, a large school yard to carry out outdoor sports activities or national ceremonies, and a school laboratory. This service activity is motivated by the availability of laboratories at SMA Negeri 6 OKU, but practicum devices such as practicum modules are not sufficient. Therefore, it is necessary to hold a module preparation training activity for teachers and students of SMA Negeri 6 OKU. This activity aims to provide material on the meaning of a practicum module, the stages of compiling a practicum module, and the format/framework of a practicum module. The results of community service showed that most of the training participants, especially teacher participants, were able to receive the training materials well.
PENGARUH TEMPERATUR AIR TERHADAP KONDUKTIVITAS DAN TOTAL DISSOLVED SOLID Parmin Lumban Toruan Lumban Toruan; Bella Margareta; Asiah Jumarni; Syahnas Ski Pratiwi; Atina Atina
Jurnal Kumparan Fisika Vol. 6 No. 1 (2023): April 2023
Publisher : Unib Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/jkf.6.1.11-16

Abstract

ABSTRAK   Kandungan mineral dalam air minum merupakan unsur yang penting dalam tubuh serta bermanfaat bagi sistem pencernaan. Air minum yang berkualitas harus sesuai dengan standar yang telah ditetapkan resmi oleh Peraturan Menteri Kesehatan RI No. 482/MENKES/PER/IV/2010. Penelitian ini bertujuan untuk menganalisis kenaikan temperatur air minum terhadap daya hantar listrik (DHL) dan total dissolved solid (TDS). Variasi temperatur dilakukan sebanyak 8 kali dengan kenaikan 10oC yaitu 10oC, 20oC, 30oC, 40oC, 50oC, 60oC, 70oC, dan 80oC. Metode yang digunakan yaitu metode eksperimen di Laboratorium melalui treatment/ perlakuan tertentu terhadap subjek penelitian yang kemudian diamati/ diukur. Hasil pengukuran DHL menunjukkan bahwa pengaruh kenaikan temperatur menghasilkan masing-masing nilai DHL 94 µS/cm, 113,333 µS/cm, 136,667 µS/cm, 162 µS/cm, 182,667 µS/cm, 208 µS/cm, 232 µS/cm, dan 276 µS/cm. Hasil pengukuran TDS menunjukkan bahwa pengaruh kenaikan temperature menghasilkan masing-masing nilai TDS 47 mg/l, 56,667 mg/l, 68,333 mg/l, 81 mg/l, 91,333 mg/l, 104 mg/l, 116 mg/l, dan 138 mg/l. Hasil tersebut menunjukkan bahwa variasi temperature air akan berpengaruh terhadap perubahan nilai DHL dan TDS. Semakin tinggi temperature air, maka nilai DHL dan TDS semakin meningkat.   Kata  kunci—3-5 Air Minum, Temperatur, DHL, TDS   ABSTRACT   The mineral content in drinking water is an important element in the body and is beneficial for the digestive system. Quality drinking water must comply with the standards that have been officially established by the Regulation of the Minister of Health of the Republic of Indonesia No. 482/MENKES/PER/IV/2010. This study aims to analyze the increase in drinking water temperature on Electrical Conductivity (DHL) and total dissolved solid (TDS). Temperature variations were carried out 8 times with an increase of 10oC, 20oC, 30oC, 40oC, 50oC, 60oC, 70oC, and 80oC. The method used is the experimental method in the laboratory through certain treatments for research subjects which are then observed/measured. DHL measurement results show that the effect of temperature increase produce each DHL value of 94 S/cm, 113,333 S/cm, 136.667 S/cm, 162 S/cm, 182,667 S/cm, 208 S /cm, 232 S/cm, and 276 S/cm. the TDS measurement results show that the effect of temperature increase produce respective TDS values 47 mg/l, 56.667 mg/l, 68.333 mg/l, 81 mg/l, 91.333 mg/l, 104 mg/ l, 116 mg/l, and 138 mg/l. These results show that the variations in water temperature will affect changes in DHL and TDS values. The higher the water temperature, the higher DHL and TDS values.   Keywords—3-5 drinking water, temperature, DHL
Co-Authors Agung Bambang Setio Utomo Agung Bambang Setio Utomo Ampala Khoryanton Asiah Jumarni Atina, Atina Bella Margareta Evi Yulianti Kartika Sari Mashadi Mashadi Sihombing, Sagita Charolina Sunardi Sunardi Syahnas Ski Pratiwi