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All Journal Jurnal Progres Kimia Sains Hydrogen: Jurnal Kependidikan Kimia Jurnal Pengabdian Masyarakat Ilmu Terapan (JPMIT) Makara Journal of Science
La Ode Kadidae, La Ode
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Agriculture, Biological Sciences & Forestry Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering

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Sintesis 1-(Benzyloxycarbonyl)-1,4,7,10-Tetraazacyclododecane Sebagai Senyawa Antara Untuk Sintesis Senyawa Makromolekul Berbasis Cyclen Kadidae, La Ode
Jurnal Progres Kimia Sains Vol 1, No 1 (2011): JPKS Open Acces
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (236.77 KB)

Abstract

Cyclen merupakan senyawa siklik yang mengandung empat atom nitrogen yang tidaktersubstitusi. Senyawa ini dapat dikembangkan menjadi senyawa ligan yang fleksibel dimanaatom-atom hidrogen yang terikat pada keempat atom nitrogen dapat disubstitusi dengangugus-gugus fungsi sesuai kebutuhan. Ligan-ligan turunan cyclen dapat menjadi dasar untukpembuatan senyawa-senyawa makromolekul dan dapat berfungsi sebagai pengenal senyawa(reseptor) atau sebagai senyawa sensor. Preparasi senyawa antara untuk pembuatan ligan-liganberbasis cyclen merupakan suatu tantangan yang lebih menarik dibandingkan dengan homosubstitusi. Dalam penelitian ini telah disíntesis senyawa antara untuk pembuatan ligan berbasiscyclen yakni senyawa 1-(benzyloxycarbonyl)-1,4,7,10-tetraazacyclododecane. Spektrum 13CNMRnya menunjukkan bahwa senyawa target hasil sintesis dengan kemurnian yang cukuptinggi. Hal ini sesuai dengan hasil analisis unsur-unsur C, H dan N, dan diperoleh C, 43.22; H,7.45; N, 12.50. C16H29Cl3N4O2•2H2O dengan hasil perhitungan yakni C, 43.40; H, 7.28; N,12.65.
SINTESIS METIL ESTER NITRAT DARI MINYAK BIJI NYAMPLUNG (CALOPHYLLUM INOPHYLLUM L) Astam, Amal; Nurliana, Laily; Kadidae, La Ode
Hydrogen: Jurnal Kependidikan Kimia Vol 7, No 2 (2019): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v7i2.1927

Abstract

Research on the synthesis of methyl ester nitrate from nyamplung seed oil (Calophyllum inophyllum L.). The aims of study are to are to determine the nitrate methyl ester can be synthesized from nyamplung seed oil determine the yield of the transesterification and nitration reaction from nyamplung seed oil. In this study nyamplung seed oil was obtained from pressing nyamplung seeds using a hydraulic press, then the crude oil obtained was subsequently degumming to remove gum. Free oil of the etherified gum then transesterification with methanol. The transesterification results are then titrated and produce nitric methyl esters. Characterization of nitric methyl ester  by spectrophotometer IR shows functional groups C-ONO2, C=C dan C-NO2 at wave number 1635,64 cm-1 1550,77 cm-1 dan 1365, 60 cm-1. The yield of transesterification of nyamplung oil was 64.66% and the nitration yield was 10.6%.
Pelatihan Pembuatan Sabun Antiseptik Cair untuk Meminimalisasi Penularan Covid Melalui Gerakan Cuci Tangan Kadidae, La Ode; Kadir, Laode Abdul; Nugrawaty, Andi Laila
Jurnal Pengabdian Masyarakat Ilmu Terapan (JPMIT) Vol 3, No 1 (2021)
Publisher : Vokasi Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (301.79 KB) | DOI: 10.33772/jpmit.v3i1.15195

Abstract

Sambuli village lies along Nambo beach of Nambo district, City of Kendari Southeast Sulawesi province. This village is mainly occupied by fishermen and farmers. Nowadays, It is every citizen’s responsibility to remind each other about the danger of Covid-19 and the importance of how to limit the spread of the disease. Considering this issue, Institute of Research and Community Service Halu Oleo University arranged a team consisting of 3 academic-staff; two of them from Chemistry study program and one from Biotechnology study program, and 3 students. All the three students were from Chemistry Department.  The aims of the team sent to the village were first to educate people of Sambuli about how to minimize the spread of Covid-19 disease and second is to train people of Sambuli to make liquid antiseptic soap. The soap would be used as an economical and practical substance for hand washing. The method used in this community service included public talking (mini seminar) and demonstration. During this community service, villagers got involved actively in discussion and participating actively during demonstration. They and their leaders were equally very enthusiastic and supportive. And in turn, the villagers with the assistance of students and academic staff of Halu Oleo University eventually managed to make liquid antiseptic soap by them shelves.  
Synthesis and Characterization of Chitosan-Polyvinyl Alcohol-Fe2O3 Composite Membrane for DMFC Application Permana, Dian; Ilimu, Edi; Faariu, Nur Mala; Setyawati, Arini; Kadidae, La Ode; Ramadhan, L.O.A.N.
Makara Journal of Science
Publisher : UI Scholars Hub

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Abstract

This study investigates the utilization of different compositions of Fe2O3 and polyvinyl alcohol (PVA) to modify chitosan in order to prepare a composite membrane. The membranes were synthesized using the phase inversion method and extensively characterized by Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), mechanical properties analysis, and water uptake analysis, whereby SEM was used to confirm the morphology of the composite membranes. Different electrochemical properties such as ion exchange capacity, proton conductivity, and methanol permeability of these membranes were also measured. The results showed that increasing the PVA mass improved the water uptake, ion exchange capacity (IEC), and proton conductivity because the PVA addition increased the hydrophilicity of the membrane; thus, the pore surface on the membrane was more open, which also caused higher membrane permeability. However, the methanol permeability values of all composite membranes were lower than that of Nafion. The highest IEC and proton conductivity were obtained for the CS-PVA-H3070 membrane, with values of 4.300 meq/g and 6.71 × 10−2 S·cm−1, respectively. The mechanical strength of these membranes showed that the PVA addition increased the elongation break and decreased the tensile strength of the membrane. The results imply that the chitosan membrane modified with PVA and Fe¬2O3 has a potential for DMFC applications.
Co-Authors Astam, Amal Dian Permana, Dian Faariu, Nur Mala Ilimu, Edi Kadir, Laode Abdul Laily Nurliana Nugrawaty, Andi Laila Ramadhan, L.O.A.N. Setyawati, Arini