This study investigates the impact of composite materials consisting of Polycaprolactone (PCL), Magnesium (Mg), and Hydroxyapatite (HA) on the strength and degradation ability of synthetic bone grafts. These materials are mixed in various proportions, namely 90% PCL, 70% PCL 50% PCL, using chloroform as a solvent. The primary aim is to produce artificial bone grafts that closely mimic the chara…
This research aims to utilize water hyacinth plant as a natural reinforcement in composite materials. Making this composite material using Yukalac 157 BTQN-EX polyester resin with catalyst from MEKPO (Methyl Ethyl Keton Peroxide) and water hyacinth fiber as a booster and using the vacuum bag method. The present study was to compare the experimental and theoretical variations of vertical and hor…
The aim of this research is to make porous composite material by using powder metallurgy method. The material used is aluminum powder mixed with powder alumina and uses green beans as pore forming material on the composite. TGA was tested on green beans weighing 54.546 mg. At the temperature of 500o green beans have not decreased weight to the remaining residual 1.72 mg or about 3.16%. Using va…
AMC (Aluminium Matrix Composites) adalah jenis material komposit logam dengan aluminium sebagai matrik, Fiber Glass sebagai reinforced atau penguat dan kacang hijau sebagai space holder. Logam berpori atau material selular merupakan suatu material yang memiliki banyak struktur sel dan pori di dalamnya. Material ini memiliki keunggulan seperti konduktifitas termal dan kapasitas menyerap energy, …
Komposit berpori telah dikenal sebagai salah satu jenis material teknik yang memiliki banyak pori-pori di dalam strukturnya yang terbentuk dari kombinasi antara dua atau lebih material pembentuk dan memiliki sifat yang berbeda dari komponen pembentuknya. Pemakaian komposit berpori telah berkembang pesat karena komposit berpori memiliki keunggulan tersendiri dibandingkan bahan alternatif lainnya…
Along with the development of material processing technology, the use of aluminum are more often found in food and beverage packaging wastes. The purpose of this research is to utilize aluminum waste and analyze the effect of changes in process parameters on hardness, density, impact, chemical composition of x-ray crystallography and aluminum microstructure with a composition of 12% fly ash and…
Penggunaan dan pemanfaatan serat alam pada saat ini sudah semakin berkembang, khususnya material komposit. Material komposit sendiri tersusun atas dua material atau lebih yang berbeda sehingga perpaduan dari material tersebut diharapkan dapat membentuk material baru yang memiliki sifat-sifat khusus, dimana salah satu dari material gabungan tersebut dinamakan penguat dan material lainnya disebut…
Composite is a combination of two or more different materials to obtain materials with physical properties and mechanical properties better than any of its constituent components. This study aims to analyze the mechanical properties and physical properties of the composite polyester reinforced silica carbides particles are included in the Composite particles mechanical properties and physical p…
Fly ash is a solid waste generated from the coal combustion at the electrical generator. Commonly, the waste of the coal combustion was indulged floating in the atmosphere and disposed of as a pile. This problem causes bad effect for the environment and the human health as well. Fly ash is found in a quite large amount so that it causes environmental problems such as air or water pollution and …
This study aimed to determine the mechanical properties and physical properties of composUes which reinforced by polyester resin glass and sand particles. Mechanical and physical properties observed were tensile strength , tensile strain, modulus of elasticity, impact and density energy. The properties can be obtained f r om tensile testing , impact testing and density testing . Types ofpolyest…
Gelam(melaleuca leucandendra) is one plant that is widely available in South Sumatra potential into cellulose extraction. His plant is widely used for building materials and wood products processed the rest of the powder timber furniture industry. While, the skin of this plant is not used for anything. In fact, from the structure of the skin that have fiber, skin of gelam has the potential to b…
Penelitian ini bertujuan untuk mensintesis komposit Fe3O4/kitosan-polivinil alkohol/SnO2 sebagai upaya dalam mengatasi limbah tetrasiklin yang mencemari lingkungan dengan proses degradasi. Nanopartikel magnetik Fe3O4 berperan sebagai bahan magnet, kitosan-polivinil alkohol sebagai agen penghalang antara Fe3O4 dan SnO2 agar tidak terjadinya efek disolusi, dan SnO2 sebagai katalis. Hasil sintesis…
Logam berat adalah zat polutan utama di lingkungan. Logam berat adalah jenis logam dengan densitas yang tinggi dan sangat berbahaya bagi mahluk hidup, terutama manusia. Organisme hidup dapat mengabsorpsi bioakumulasi dan sedimentasi dari logam berat yang mengendap di dalam air. Beberapa senyawa yang terdapat dalam air limbah antara lain Kadmium (Cd), Tembaga (Cu), Besi (Fe), dan Timbal (Pb). Lo…
A composite material is a material consisting of two or more material components, to produce new properties that are better than the previous material. The composite materials used in this study are WR200 Fiberglass, and Resin Matrix Alloy with Carbon. The composite material that will be used in this study is oriented towards a mixture of resin matrix, namely a mixture of resin with coconut cha…
Koefisien kekasaran Manning merupakan parameter yang sangat mempengaruhi parameter lainnya. Pada saluran dengan komposisi material yang berbeda atau saluran komposit, pemilihan nilai kekasarannya sulit ditentukan. Pemilihan nilai yang tepat perlu dilakukan agar analisis pada saluran komposit lebih akurat. Penelitian ini bertujuan untuk menyelidiki pengaruh perubahan parameter kedalaman aliran t…
Kandungan fosfat di dalam air pada dasarnya tidak berbahaya apabila konsentrasinya tidak melebihi ambang batas. Namun, ion fosfat akan berbahaya dan dapat mencemari lingkungan perairan apabila konsentrasinya sudah melebihi nilai ambang batas. Salah satu metode untuk mengatasi permasalahan ini adalah dengan metode adsorpsi menggunakan biochar dari sekam padi yang dikompositkan dengan Fe3O4. Tuju…
Keistimewaan yang nyata dalam sistem komposit baja-beton adalah struktur yang lebih kaku dan lebih kuat. Sistem struktur komposit terbentuk akibat interaksi antara komponen struktur baja dan beton yang karakteristik dasar masing-masing bahan dimanfaatkan secara optimal. Interaksi tersebut terjadi apabila gaya geser horizontal antara balok baja dan pelat beton selama pembebanan ditahan dengan al…
Cases of bone damage due to disease, incidence, or age factor is increasing increases, the demand for bone implants also increases. Limited bone donors and expensive synthetic materials are no longer a problem due to bone tissue engineering. Alternative materials are needed which are biocompatible, biodegradable and bioactive. This research aims to determine the effect of compaction temperature…
Abu batubara (fly ash) merupakan limbah padat hasil samping dari industri PLTU yang memiliki sifat kekerasan yang tinggi dan merupukan ikatan oksida maka fly ash dapat dimanfaatkan dalam pembuatan material komposit. Material fly ash mempunyai sifat yang baik terhadap suhu tinggi dan ketahanan terhadap bahan kimia, mempunyai kekuatan mekanik yang baik. Komposit berbahan dasar CaCO3,Bentonite Cla…
Composite resin is a restorative dental material widely used in restorative dentistry because it has good aesthetic. The main disadvantage of composite resin is polymerization shrinkage, it can lead to microleakage. One of factors affecting polymerization shrinkage is irradiation distance. The purpose of this study was to know the effect o f irradiation distance on composite resin microleakage.…
Hydroxyapatite is one of the most important calcium carbonate ingredients of the inorganic components of bones and teeth in humans. HA/PVA composite with cold sintering method with compression variations of 400,500, and 600 MPa has been successfully made, the manufacture of HA/PVA composite begins with the process of mixing HA and PVA powder with variations in the existing composition, the mixi…
Materials and methods of making human bone implants continue to be developed. HA powder is used as a candidate for bone graft material that has almost the same structure as human bones and teeth. HA powder is synthesized by calcination method at 600°C for 1 hour. Ha powder results measuring 200 μm. Polyvinyl alcohol (PVA) combined with HA forms a composite material to enhance its characterist…
Composite resin as a restoration material in the mouth would interact with liquid, whether in the mouth of liguid or oral fluid. This modern life style makes society consume water with the different pH likes tea and soft drinks. The aim of this study was know the inftuence of different pH water to the hardness of hybrid composite resin. our The subject of this study was cylindrical hybrid compo…
Introduction: Composite resin as a restorative material in the mouth is always exposed to water, saliva, and the fluid from food and beverages consumed daily, including yoghurt. Currently, commercially available yoghurt consists of a variety of consistency, there is a cream and liquid. The aim of this study was evaluate the influence of variety yoghurt on the hardness of composite resin. Materi…
Nanofill composite resin is a kind of composite resin which the size offiller particles is ranging from 0.01 to 0.04 pm. As a restorative material, nanofill composite resin would be exposed to various liquid in oral environment such as saliva, food, drinks, mouth rinses, etc. Several kinds of colored drinks which are often consumed by Indonesian among others tea, coffee, and carbonated drink li…
Backgroitnd : One of the latest development of composite resin is the existence of nanofilled composite resin. The uses ofthis type of composite resin still need the a lot of r esearch, one of t hem is about the surface roughness. Strawberry is best believed to bleach the stained teeth. As the natural bleaching agent, the effect of strawberry towards the surface roughness of nanofilled composit…
Nanofilled resin composite as a direct restorative material with excellent mechanical and aesthetic properties can be used for both anterior and posterior restoration. One of factors of restoration longevity is surface hardness. Restoration thickness is one of factors affecting polymerization light cured composite. The aim of this research was to evaluate the influence of restoration thickness …