Browsing Department of Chemistry by Submit Date
Now showing items 1-20 of 3053
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Sintesis Wet Strength Agent (WSA) Berbasis Selulosa melalui Reaksi antara Selulosa Dialdehida dan Dietilamina
(Universitas Sumatera Utara, 2025)Cellulose is an abundant biopolymer that can be selectively oxidized into dialdehyde cellulose (DAC) using sodium periodate (NaIO₄). The aldehyde groups in DAC enable further reactions with amines, including diethylamine, ... -
Pembuatan 2-Etilheksil Dekanoat dari Esterifikasi 2-Etilheksanol dan Asam Dekanoat pada Perbandingan Rasio Mol dan Konsentrasi Enzim Lipase Menggunakan Radiasi Mikrowave
(Universitas Sumatera Utara, 2025)Preparation of 2-Ethylhexyl Decanoate from decanoic acid and 2-Ethylhexanol carried out through esterification reaction using microwave radiation and lipase enzyme as catalyst. The parameters used in this study were variation ... -
Modifikasi Pati Sukun (Artocarpus altilis) Teroksidasi Menggunakan Natrium Perborat
(Universitas Sumatera Utara, 2025)Modification of breadfruit starch into carboxylate starch has been carried out through an oxidation reaction between breadfruit starch (Artocarpus altilis) and sodium perborate. The oxidation reaction was carried out ... -
Sintesis Wet Strength Agent (WSA) Berbasis Selulosa melalui Reaksi antara Selulosa Dialdehida dengan Dietanolamina
(Universitas Sumatera Utara, 2025)The synthesis of a cellulose-based wet strength agent (WSA) was carried out by isolating cellulose from oil palm empty fruit bunches (EFB) using HNO₃, NaOH, Na₂SO₃, NaOCl, and H₂O₂ solutions, yielding 19.102 g of cellulose ... -
Sintesis Polifenalkamin dari Kardanol Hasil Isolasi Kulit Biji Mete (Anacardium occidentale.L) dengan Variasi Mol Formladehida Serta Uji Antikorosi dan Antibakteri
(Universitas Sumatera Utara, 2025)Polyphenalkamine was synthesized via a Mannich reaction between cardanol, ethylenediamine, and formaldehyde. The synthesis was carried out by mixing cardanol, ethylenediamine, and formaldehyde under reflux for 3.5 hours. ... -
Pembuatan Karbon Aktif dari Kulit Singkong (Manihot Utilissima) untuk Penurunan Kadar Logam Besi (Fe) pada Air Sumur Bor
(Universitas Sumatera Utara, 2025)Borehole water in some areas often contains iron metal (Fe) that exceeds the threshold set by Permenkes No. 2 Year 2023, which is 0.2 mg/L. Excess iron content can reduce water quality and cause health problems. This study ... -
Isolasi Dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Rambai (Baccaurea motleyana Müll. Arg)
(Universitas Sumatera Utara, 2025)Flavonoid compounds were successfully isolated from rambai (Baccaurea motleyana) stem bark through maceration-methanol extraction, followed by partition extraction using ethyl acetate and n-hexane solvents. The result was ... -
Modifikasi Pati Sukun (Artocarpus altilis) Teroksidasi Menggunakan Natrium Bromat
(Universitas Sumatera Utara, 2025)Modification of breadfruit starch (Artocarpus altilis) into carboxylated starch through oxidation reaction using sodium bromate as an oxidizer has been carried out. The modification was performed with a mass ratio of ... -
Pembuatan Karbon Aktif dari Kulit Singkong (Manihot Utilissima) untuk Penurunan Kadar Logam Besi (Fe) pada Air Sumur Bor
(Universitas Sumatera Utara, 2026)Borehole water in some areas often contains iron metal (Fe) that exceeds the threshold set by Permenkes No. 2 Year 2023, which is 0.2 mg/L. Excess iron content can reduce water quality and cause health problems. This study ... -
Modifikasi Pati Sukun (Artocarpus altilis) Teroksidasi Menggunakan Natrium Bromat
(Universitas Sumatera Utara, 2026)Modification of breadfruit starch (Artocarpus altilis) into carboxylated starch through oxidation reaction using sodium bromate as an oxidizer has been carried out. The modification was performed with a mass ratio of starch ... -
Modifikasi Pati Sukun (Artocarpus altilis) Teroksidasi Menggunakan Agen Pengoksidasi Kalium Bromat
(Universitas Sumatera Utara, 2025)The isolation stage of breadfruit starch and the modification stage of breadfruit starch through an oxidation reaction with variations in time for 3 hours, 6 hours, 9 hours and variations in oxidant concentration of ... -
Isolasi dan Identifikasi Senyawa Golongan Flavonoida dari Biji Buah Longan (Dimocarpus longan Lour.)
(Universitas Sumatera Utara, 2025)Longan fruit seeds (Dimocarpus longan Lour.) were explored for their potential as a source of flavonoid compounds through a series of isolation and structural identification techniques, namely extraction by methanol solvent ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Eukaliptus (Eucalyptus grandis W. Hill ex Maiden)
(Universitas Sumatera Utara, 2026)The isolation and identification of flavonoid compounds obtained from the bark of eucalyptus tree (Eucalyptus grandis W. Hill ex Maiden) was carried out using several methods, namely maceration extraction with methanol ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Kesambi (Schleichera oleasa (Lour.) Oken)
(Universitas Sumatera Utara, 2026)The isolation and identification of flavonoid compounds from the stem bark of kesambi (Schleichera oleosa (Lour.) Oken) were carried out through several stages. The research process began with maceration extraction using ... -
Pengaruh pH terhadap Derajat Kristalinitas Hasil Sintesis Hidroksiapatit dari Cangkang Kerang Kepah (Polymesoda erosa) dengan Metode Pengendapan Basah
(Universitas Sumatera Utara, 2025)Kepah shell waste (Polymesoda erosa) contains a high calcium oxide (CaO) content of approximately 96.06%, making it a promising calcium source for hydroxyapatite (HAp) synthesis. This study aims to analyze the effect of ... -
Sintesis dan Karakterisasi Carbon Dots (CDs) Berbasis Cangkang Biji Karet (Havea brasiliensis) Menggunakan Metode Hidrotermal
(Universitas Sumatera Utara, 2025)Rubber seed shells (Hevea brasiliensis) are agricultural biomass waste that is abundant and has not been optimally utilized. Rubber seed shell biomass can be used as a precursor in the synthesis of Carbon Dots (CDs). CDs ... -
Sintesis dan Karakterisasi Nitrogen Carbon Dots Berbasis Cangkang Biji Karet (Havea brasiliensis) Menggunakan Metode Hidrotermal dengan Variasi Massa Dopan
(Universitas Sumatera Utara, 2025)Carbon Dots (CDs) are zero-dimensional carbon nanomaterials with a size of less than 10 nm that have high fluorescence properties and good stability. Efforts to improve fluorescence efficiency and stability can be done ... -
Sintesis dan Karakterisasi Nanokomposit MoS2/N-Doped Carbon Dots Berbasis Cangkang Biji Karet (Hevea brasiliensis) dengan Metode Sonikasi
(Universitas Sumatera Utara, 2025)Nitrogen-doped Carbon Dots (N-CDs) are nanoscale materials with high fluorescence intensity and large band gap. Molybdenum disulfide (MoS₂) is a semiconductor with a narrow band gap and high visible light absorption capacity. ... -
Pengaruh Suhu Sintering terhadap Kristalinitas Hidroksiapatit yang Disintesis dari Tulang Ikan Lele (Clarias sp.) Melalui Metode Pengendapan Basah
(Universitas Sumatera Utara, 2025)Hydroxyapatite (HAp) was synthesized from catfish (Clarias sp.) bone using the wet precipitation method. The bone composition was analyzed using EDXRF and showed a calcium oxide (CaO) content of 59.42 wt%. Sintering was ... -
Sintesis dan Karakterisasi Nanokomposit Fe3O4/N-Doped Carbon Dots Berbasis Cangkang Biji Karet (Hevea brasiliensis) dengan Metode Sonikasi
(Universitas Sumatera Utara, 2025)Research on biomass-based nanomaterials has the potential to produce environmentally friendly materials with outstanding functional properties. Nitrogen-doped Carbon Dots (N-CDs) are nanomaterials known for their strong ...