Department of Chemistry: Recent submissions
Now showing items 201-220 of 3020
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Pembuatan Cangkang Kapsul dari Kombinasi Pati Singkong (Manihot Esculenta) dan Natrium Karboksimetil Selulosa (Na-CMC)
(Universitas Sumatera Utara, 2024)Capsules are pharmaceutical preparations containing drugs that have a wrapper in the form of a hard or soft shell which is projected to increase by 8.1% due to the increase in disease prevalence. However, commercial ... -
Analisis Termal Aspal Modifikasi Poliuretan Alam dari Getah Pinus Merkusii (Jungh et de Vries) dan Peg 400 dengan Penambahan Toluena 2,4-Diisosianat
(Universitas Sumatera Utara, 2024)This study examines the modification of polymer asphalt with polyurethane through several stages. The first stage involves the production of polyol from Pinus merkusii resin by reacting it with 90% formic acid and 30% H₂O₂. ... -
Analisis Variasi Rasio Temperatur dan Waktu Pirolisis terhadap Produksi Grafena Berlapis Nano dari Cangkang Kelapa Sawit (Elaeis Guineensis Jacq.)
(Universitas Sumatera Utara, 2024)Research on the analysis of the variatios in temperature (T) and time (t) ratio during pyrolysis on the production of graphene nano sheets from palm kernel shells has been conducted. The purpose of this research is to ... -
Modifikasi Pati Sukun (Artocarpus Altilis) melalui Reaksi Esterifikasi dengan Asam Miristat dalam Media Larutan Urea/NaOH
(Universitas Sumatera Utara, 2024)Modification of breadfruit starch into myristic starch was done through esterification reaction between breadfruit starch (Artocarpus altilis) and myristic acid. This research was conducted in two stages, namely, isolation ... -
Sintesis Metil Oleat dari Asam Oleat dengan Metanol pada Perbandingan Rasio Molar dan Daya Microwave menggunakan Katalis Abu Kulit Durian
(Universitas Sumatera Utara, 2024)The synthesis of methyl oleate from esterification reaction between oleic acid with methanol was performed using calcined durian peel ash as catalyst and microwave irradiation has been carried out. Durian powder was ... -
Efektivitas Defibrilasi pada Isolasi Nanoserat Selulosa Batang Eceng Gondok (Eichornia Crassipes) melalui Perlakuan Awal Ledak Uap dan Variasi Waktu Ultrasonikasi
(Universitas Sumatera Utara, 2024)Water hyacinth is among the world's top 10 invasive weeds due to its adaptability and high growth rate. Its high cellulose content makes water hyacinth a potential source of cellulose nanofiber (CNF) for alternative ... -
Sintesis Natrium Alginat Termodifikasi Dopamin sebagai Binder untuk Anoda Nanosilikon dalam Baterai Ion Litium
(Universitas Sumatera Utara, 2024)The potential of silicon as the anode material of future high-capacity lithium-ion batteries is still difficult to realize due to the low mobility of electrons and the material's vulnerability to damage from considerable ... -
Efek Oksida Logam terhadap Sifat Fisis Minyak Sawit/Solar
(Universitas Sumatera Utara, 2024)Indonesia's petroleum reserves are decreasing daily, due to the non-renewable nature of fossil fuels. Alternative energy sources are needed as a substitute for fuel by utilizing palm oil and diesel oil commonly called ... -
Karakterisasi Film dari Pati Singkong (Manihot Esculenta) sebagai Antibakteri Pseudomonas Aeruginosa pada Luka Sayat
(Universitas Sumatera Utara, 2024)Films are thin sheets used to close and protect wounds. Films are often made from materials such as starch and chitosan as an antibacterial agent for Pseudomonas aeruginosa. Film making in the form of plaster is by mixing ... -
Impregnasi Fe/Cu pada Material Mesopori Silika Template Metil Ester Risinoleat sebagai Adsorben-Reduktor Kromium (VI)
(Universitas Sumatera Utara, 2024)Chromium is one of the heavy metals that is widely used in industrial activities. Chromium metal (especially hexavalent chromium) has high toxicity. Nowadays, adsorption-reduction technique is the most efficient treatment ... -
Modifikasi Pati Sukun (Artocarpus Altilis) melalui Reaksi Esterifikasi dengan Asam Laurat dalam Media Larutan Urea/NaOH
(Universitas Sumatera Utara, 2024)Modification of lauric starch was done through esterification reaction between breadfruit starch (Artocarpus altilis) with lauric acid in urea/NaOH solution media. This research was conducted in two stages, namely, ... -
Sintesis Metil Oleat dari Asam Oleat dan Metanol pada Variasi Berat Katalis Abu Kulit Telur Ayam dan Waktu Reaksi menggunakan Radiasi Microwave
(Universitas Sumatera Utara, 2024)The synthesis of methyl oleate was conducted from the esterification reaction of oleic acid with methanol using a chicken eggshell ash catalyst under microwave irradiation. Chicken eggshell powder was analyzed ... -
Preparasi Poliuretan Alam dari Campuran Getah Nangka (Artocarpus Heterophyllus) dan PEG 400 menggunakan Monomer Isosianat (TDI)
(Universitas Sumatera Utara, 2024)Preparation of natural polyurethane from jackfruit sap is done by reacting the jackfruit sap with 98% formic acid and 30% H2O2, then polyurethane production is carried out by reacting the jackfruit sap polyol with PEG ... -
Analisis Mutu Mi dari Tepung Mocaf dan Pati Biji Nangka (Artocarpus Heterophyllus Lamk.) Termodifikasi dengan Penambahan Garam Fosfat
(Universitas Sumatera Utara, 2024)Noodles are a type of food made from wheat flour derived from wheat. However, due to the limited supply of wheat, food diversification is carried out by substituting the raw materials for noodles from mocaf flour and ... -
Efektivitas Nitrogen-Doped Carbon Dots (N-CDs) dengan Metode Solvotermal dari Kulit Nangka sebagai Fotodegradasi Kongo Merah
(Universitas Sumatera Utara, 2024)Dyes have become a significant source of water pollution, with percentages 1-15 of dye lost as pollutants during the dyeing process. One of the dyes usually used by textile induction is Congo Red (CR). The solution is ... -
Sintesis Nitrogen-Doped Carbon Dots (N-CDs) dengan Metode Hidrotermal dari Kulit Nangka sebagai Fotodegradasi Rhodamin B
(Universitas Sumatera Utara, 2024)Nitrogen-Doped Carbon dots are fluorescent nanoparticles that can be synthesized from biomass. Jackfruit peel is a biomass waste containing 42.20% carbon which can be used as a precursor to synthesis carbon dots and ... -
Analisis Potensi Adsorben Berbahan Dasar Karboksimetil Selulosa dan GUAR GUM terhadap Penyerapan Metilen Biru Menggunakan Isoterm Adsorpsi Freundlich dan Langmuir
(Universitas Sumatera Utara, 2024)The research on the adsorption capacity of methylene blue using adsorbents based on carboxymethyl cellulose (CMC) and guar gum has been conducted. This study aimed to determine the equilibrium time of methylene blue ... -
Karakteristik Paduan Karet EPDM/NR SIR-20 dengan Pengisi Arang Aktif Cangkang Kelapa Sawit sebagai Peredam Benturan Pintu Kendaraan (Weather Strip)
(Universitas Sumatera Utara, 2024)The composite used as a four-wheeled vehicle door impact damper (weather strip) is made from a mixture of synthetic rubber Ethylene Propylene Diene Monomer (EPDM) with Natural Rubber SIR-20 (NR SIR-20) which is added with ... -
Analisis Morfologi, Kristalinitas, dan Daya Hantar Listrik Grafena Berlapis Nano dari Tempurung Kelapa (Cocos Nucifera L.) dengan Metode Pirolisis
(Universitas Sumatera Utara, 2024)Research on the morphology, crystallinity, and electrical conductivity analysis of coconut shell (Cocos nucifera L.) graphene nano sheet using pyrolysis method was conducted. The purpose of this study was to analyze ... -
Efektivitas Carbon Dots dari Limbah Plastik Polyethylene Terephthalate sebagai Fotodegradasi Methylene Blue di Bawah Radiasi Sinar UV
(Universitas Sumatera Utara, 2024)The high use of plastic bottles as drinking water packaging results in the production of plastic bottle waste. In general, the materials used to make plastic bottles are made from polyethylene Terephthalate (PET) polymer ...