Doctoral Dissertations
Doctoral Dissertations
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Modifikasi Aspal dengan Karet Alam Reaktif: Fungsionalisasi Karet Alam dengan Maleat Anhidrat (MA), Glisidil Metakrilat (GMA) untuk Meningkatkan Kinerja Aspal
(Universitas Sumatera Utara, 2024)Natural rubber biopolymer has the potential to be used as an additive in the manufacture of polymer modified asphalt or rubber asphalt. This study aims to synthesize a reactive polymer based on natural rubber (SIR-20) ... -
Preparasi dan Karakterisasi Polivinilklorida Termodifikasi Anhidrida Maleat dan Butil Akrilat dengan Pengisi Sepiolite dan Organo-Sepiolite sebagai Bahan Kabel Tahan Panas
(Universitas Sumatera Utara, 2023)This research investigates the influence of using magnesium oxide (MgO) and sepiolite fillers in PVC blends and modification with maleic anhydride and butyl acrylate comonomers (AM/BA) on the properties of PVC blends. The ... -
Sintesis dan Karakterisasi Hidrogel Berbasis Selulosa dari Tandan Kosong Kelapa Sawit sebagai Media Tanam pada Sistem Hidroponik
(Universitas Sumatera Utara, 2023)Oil palm empty fruit bunches are a source of natural fiber from the abundant waste material found in the North Sumatra region. The fiber of empty palm fruit bunches has a high cellulose content and has the potential to be ... -
Asap Cair Cangkang Kelapa Sawit sebagai Pengawet dan Jaringan Semi Interpenetrasi Polimer pada Kayu Kelapa Sawit
(Universitas Sumatera Utara, 2007)This research aim to improve the properties of palm oil wood by used liquid smoke from palm shell pyrolysis and formed semi-interpenetrating polymer network by used toluene diisosianat as active monomer with in situ ... -
Peran Bahan Kimia dalam Limbah Udang pada Pembuatan Pupuk Organik dari Tandan Kosong dan Limbah Cair Kelapa Sawit
(Universitas Sumatera Utara, 2007)Compost produced from empty fruit bunches and palm oil mill effluent can be used as organic fertiliser (bokashi). The addition of chemical material in the form of kithin compund found in shrimp waste, during the production ... -
Analisis Cannabinoid dari Rambut Pengguna Narkotika Jenis Ganja (Cannabis sativa L.) Menggunakan Teknik GCMS
(Universitas Sumatera Utara, 2016)Analysis of cannabinoids in hair of marijuana (Cannabis saliva L) can be done using samples of urine, blood and hair. This study used hair because the inspection can be performed after 72 hours of use by the user, this ... -
Isolasi dan Penentuan Struktur Kimia Senyawa Flavonoid dari Daun Iler (Coleus atropurpureus Benth)
(Universitas Sumatera Utara, 2012)Iler ( Coleus atropurpureus Benth) is a species of the family Lamiaceae which is used as a traditional medicine to treat fever, ulcer wound and diabetes mellitus. This plant is known to contain flavonoid. This study aimed ... -
Kestabilan Thermal Nanokomposit Polipropilena dengan Penguat Montmorilonites dan Antioksidan Irganox 1010
(Universitas Sumatera Utara, 2010)Nanocomposite polymers has attracted great attention world wide both in academic and industry. The improvement material properties of polymers can be done by using layered silicates with a low concentration. This research ... -
Studi Karakteristik dan Aplikasi Film Pelapis Kelat Logam Alkali Tanah Alginat-Kitosan
(Universitas Sumatera Utara, 2007)Several types of thin films are widely used to protect foodstuff, but thin film with antimicrobial activity and edible film characteristic is still limited to develop. In this work has been performed the preparation of ... -
Pemanfaatan Kulit Udang (Penaues Monodon) sebagai Kitosan dan Turunannya untuk Menurunkan Konsentrasi Ion Logam Ni dan Cr dengan Ekstrasi Fasa Padat Sebagai Sumber Air Bersih
(Universitas Sumatera Utara, 2006)The chitin used to produced chitosan in this study was isolated from prawn shells by wet chemistry. The percentage yileds of chitin were 30,8%. Chitosan was prepared by deacetylation of the chitin which produced 71,6%. A ... -
Penggunaan Kitosan dan Turunannya Sebagai Penyalut Silika Gel dan Filter Fiber Glass Untuk Menyerap Logam Ni dan Cr dakam Sistem Aquatik dengan Ektraksi Fasa Padat
(Universitas Sumatera Utara, 2006)The use of chitosan and its derivative for Ni(II) and Cr(III) metal ions absorption in aquatic system using solid phase extraction has been studied. The chitosan was obtained from chitin produced by wet chemical process ... -
Pengolahan Karakterisasi Abu Boiler Kelapa Sawit dan Abu Sekam Padi Menjadi Nano Partikel sebagai Bahan Pengisi Termoplastik HDPE
(Universitas Sumatera Utara, 2014)This study aims to obtain palm ash and rice husk ash in the nano-size particles with 2.5 M NaOH solution process for 4 hours and then dissolved in a ball mill for 15 hours. To determine the effect of nano-particles of ... -
Pembuatan Membran Nanokomposit Kitosan - Zeolit Alam Sarulla Untuk Pemisahan Campuran Etanol-Air Secara Pervaporasi
(Universitas Sumatera Utara, 2016)The study is aimed to synthesis chitosan membrane from shrim shell waste and modification of membrane by additing natural nanozeolite Sanilla by varying the composition of nanozeolite toward the membrane performance. The ... -
Pembuatan Asap Cair dari Cangkang Kelapa Sawit Melalui Teknik Kondisi Lingkungan Udara Terkendali Sebagai Bahan Pengawet Ikan
(Universitas Sumatera Utara, 2015)In this research, the pyrolysis process by flowing nitrogen gas with flow rate of 10 ml/sec, so that the conditioned air environment controlled and free air pyrolysis to produce liquid smoke to be used as preservatives ... -
Analisa Degradasi Oksidasi Karet Alam Siklis (Resiprene-35) Akibat Penyimpanan, Pemanasan dan Sinar Ultraviolet
(Universitas Sumatera Utara, 2016)Research on analysis oxidative degradation and stabilization of cyclic natural rubber (resipren-35) using wax commercial antioxidants, BHT, and Wingstay has been conducted. Properties of physics as a result of treatment ... -
Kinerja Paduan Grafitik Karbon (Grafena dan N-Grafena) dengan Logam Besi, Litium dan Mangan sebagai Anoda Baterai Sekunder
(Universitas Sumatera Utara, 2022)Research performance of Fe/Graphitic carbon (Graphene and N-Graphene), Li/Graphene Carbon (Graphene and N-Graphene) and Mn/Graphytic Carbon (Graphene and N-Graphene) as secondary battery anodes has been carried out. The ... -
Sintesis Silikon Nanopartikel dengan Penambahan Garam Kalium Bromida Menggunakan Metode Magnesiotermik dari Sekam Padi dan Aplikasinya sebagai Anoda Baterai Litium-Ion
(Universitas Sumatera Utara, 2022)Preparation of silica from rice husks with variations calcination of 600oC, 700oC, 800oC, and 900oC and added NaOH then added HCl until pH 7. It was filtered and dried to obtain silica. FTIR characterization showed OH ... -
Hidrogel Karboksimetil Selulosa-Asam Sitrat-Polivinil Alkohol yang Diimobilisasi Zat Ekstraktif Daun Gaharu sebagai Material Sediaan Obat Luka
(Universitas Sumatera Utara, 2022)Agarwood twig and leaves are a by-product of agarwood plantations can be developed into medicinal raw materials. The purpose of this study was to determine the Carboximetyl Cellulose (CMC) potential of the agarwood twig ... -
Analisis Biomolekuler dan Sifat Patogenesitas Ganoderma Terhadap Penyakit Busuk Pangkal Batang pada Tanaman Kelapa Sawit (Elaeis Guinensis)
(Universitas Sumatera Utara, 2008)Biomolekuler analysis and photogenesity test of Ganoderma, causal agent of basal stem rot (BSR) disease on oil palm (Elaeis Guinensis) have been carried out. The identification and characterization were preceded by ... -
Uji Sitotoksik Senyawa Aktif Kalkon Tersubstitusi Halogen terhadap Sel Kanker Payudara MCF-7
(Universitas Sumatera Utara, 2022)The synthesis of halogen-substituted chalcone compounds was carried out using the Clasien-Schmidt condensation type aldol condensation method, using microwave radiation or ecofriendly. The number of substituted chalcone ...
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