Aninda Kartika Dewi, Andrie Harmaji, Rinawati Satrio, B. Sunendar
Composite is one of the direct dental restoration materials, which is consisted of three main components such as matrix, filler, and coupling agent. Metakaolin and zirconia are potential alternatives as dental restoration materials. This study aims to determine the characteristics of synthesized metakaolin–zirconia geopolymer nanocomposite with the addition of tapioca as a template. The study is a pure experimental laboratory investigation. The sample is fabricated by means of both the synthesis of metakaolin, zirconia, alkali activator, chitosan and the addition of tapioca of 0.4% v/v, 0.8% v/v, and 1.6% v/v. Alkali solution consisting of NaOH and Na 2 SiO 3 is used to activate the geopolymerization of me-takaolin. Nanocomposite characteristics with variations of the addition of tapioca template are then evaluated for its hardness and microstructure. Synthesis of metakaolin–zirconia geopolymer nanocomposite with the addition of tapioca template is successful, and it has a mean hardness value, which has met the hardness value used for dental composite restoration and has the best attachment to artificial teeth. The best hardness value is of 51.70 VHN achieved by the
{"title":"The Effect of Tapioca on Morphological and Mechanical Properties of Metakaolin–Zirconia Geopolymer for Dental Restorative Nanocomposite","authors":"Aninda Kartika Dewi, Andrie Harmaji, Rinawati Satrio, B. Sunendar","doi":"10.15407/nnn.20.04.895","DOIUrl":"https://doi.org/10.15407/nnn.20.04.895","url":null,"abstract":"Composite is one of the direct dental restoration materials, which is consisted of three main components such as matrix, filler, and coupling agent. Metakaolin and zirconia are potential alternatives as dental restoration materials. This study aims to determine the characteristics of synthesized metakaolin–zirconia geopolymer nanocomposite with the addition of tapioca as a template. The study is a pure experimental laboratory investigation. The sample is fabricated by means of both the synthesis of metakaolin, zirconia, alkali activator, chitosan and the addition of tapioca of 0.4% v/v, 0.8% v/v, and 1.6% v/v. Alkali solution consisting of NaOH and Na 2 SiO 3 is used to activate the geopolymerization of me-takaolin. Nanocomposite characteristics with variations of the addition of tapioca template are then evaluated for its hardness and microstructure. Synthesis of metakaolin–zirconia geopolymer nanocomposite with the addition of tapioca template is successful, and it has a mean hardness value, which has met the hardness value used for dental composite restoration and has the best attachment to artificial teeth. The best hardness value is of 51.70 VHN achieved by the","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42980398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The present paper aims to design of new (PEO–Cu–Ag–H 2 O) nanostructures to use it in solar collectors with high dispersion of metallic particles, good solar energy absorption and high corrosion resistance. The theoretical method of DFT offers nanostructures and energies. The structural stability and electronic properties of the nanostructures are studied in relations of the calculated energy, ionization potentials, HOMO–LUMO gap
本文旨在设计一种新型(peo - cu - ag - h2o)纳米结构，将其应用于金属颗粒分散性高、太阳能吸收率高、耐腐蚀性好的太阳能集热器中。DFT的理论方法提供了纳米结构和能量。研究了纳米结构的结构稳定性和电子性能与计算能量、电离势、HOMO-LUMO间隙的关系
{"title":"Exploring the Optical, Electronic and Thermal Characteristics of (PEO/Cu/Ag/H2O) New Nanostructures to Use in Solar Collectors","authors":"Ahmed Hashim","doi":"10.15407/nnn.20.04.951","DOIUrl":"https://doi.org/10.15407/nnn.20.04.951","url":null,"abstract":"The present paper aims to design of new (PEO–Cu–Ag–H 2 O) nanostructures to use it in solar collectors with high dispersion of metallic particles, good solar energy absorption and high corrosion resistance. The theoretical method of DFT offers nanostructures and energies. The structural stability and electronic properties of the nanostructures are studied in relations of the calculated energy, ionization potentials, HOMO–LUMO gap","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43609718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Characteristics and Parameters of the Plasma of the Gas Discharge Reactor for the ‘Cold’ Synthesis of Bimetallic Cu–Zn Nanoparticles in Argon","authors":"","doi":"10.15407/nnn.20.04.839","DOIUrl":"https://doi.org/10.15407/nnn.20.04.839","url":null,"abstract":"","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47574997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ali Alasmi, Joumaa Merza, Mirna Jabbour, Shaimaa Rabah
The total synthesis of aminothiazole coumarin derivative (IV) in four steps is reported. The propriety of compound (IV) is studied. To evaluate the biological activity of the Schiff base (IV), the nanoparticles in solution and the nanoparticles carried on cellulose membrane are prepared
{"title":"Synthesis and Characterization of 2-(Aminothiazole-4-yl) Coumarin-2-One, and Studying Its Nanoparticles as Antibacterial Activity","authors":"Ali Alasmi, Joumaa Merza, Mirna Jabbour, Shaimaa Rabah","doi":"10.15407/nnn.20.04.1037","DOIUrl":"https://doi.org/10.15407/nnn.20.04.1037","url":null,"abstract":"The total synthesis of aminothiazole coumarin derivative (IV) in four steps is reported. The propriety of compound (IV) is studied. To evaluate the biological activity of the Schiff base (IV), the nanoparticles in solution and the nanoparticles carried on cellulose membrane are prepared","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42988753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Experimental Investigation of the Effect of Expanded Graphite on the Thermophysical Properties and the Heating and Cooling Rates of Paraffin Wax in Capsule of Thermal-Energy Storage System","authors":"","doi":"10.15407/nnn.20.04.983","DOIUrl":"https://doi.org/10.15407/nnn.20.04.983","url":null,"abstract":"","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43791406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The new polyethylene oxide PEO–copper oxide CuO–indium oxide In 2 O 3 structures are designed to use in various optics and electronics approaches. The structure, optical and electronic properties as well as optimized geometry for PEO–CuO–In 2 O 3 structures are studied by using DFT at the B3LYP level with basis set SDD. The electronic characteristics at issue contain total energy, co-hesive energy, HOMO, LUMO, ionization potential, energy gap, softness, electronic affinity, hardness, electronegativity
新型聚环氧乙烷PEO–氧化铜CuO–氧化铟In 2 O 3结构设计用于各种光学和电子方法。利用B3LYP水平的DFT和基组SDD研究了PEO–CuO–In2 O3结构的结构、光学和电子性质以及优化的几何结构。所讨论的电子特性包括总能量、共粘合能、HOMO、LUMO、电离势、能隙、柔软度、电子亲和力、硬度、电负性
{"title":"Tailoring the Structure, Electronic and Optical Properties of PEO/CuO/In2O3 New Structures for Flexible Electronics and Optics Approaches","authors":"Huda Bukheet, H. Abduljalil, Ahmed Hashim","doi":"10.15407/nnn.20.04.941","DOIUrl":"https://doi.org/10.15407/nnn.20.04.941","url":null,"abstract":"The new polyethylene oxide PEO–copper oxide CuO–indium oxide In 2 O 3 structures are designed to use in various optics and electronics approaches. The structure, optical and electronic properties as well as optimized geometry for PEO–CuO–In 2 O 3 structures are studied by using DFT at the B3LYP level with basis set SDD. The electronic characteristics at issue contain total energy, co-hesive energy, HOMO, LUMO, ionization potential, energy gap, softness, electronic affinity, hardness, electronegativity","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47260379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of Plating of Carbon Fibres with Ni on Properties of Fe-Based Materials","authors":"","doi":"10.15407/nnn.20.04.875","DOIUrl":"https://doi.org/10.15407/nnn.20.04.875","url":null,"abstract":"","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43704114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The structural properties of polycarbonate/silicon carbide–tantalum carbide nanocomposites are investigated for antibacterial application. The nanocomposites are prepared by casting method with various ratios of SiC/TaC nanoparticles: 1.2, 2.4, 3.6 and 4.8 wt.%. The experimental re-sults show that high distribution of SiC–TaC nanoparticles inside the pol-ycarbonate matrix. The antibacterial activity of the nanocomposites increases with the increase in the SiC–TaC-nanoparticles’ concentration. Finally, the prepared nanocomposites have high antibacterial activity with a low cost, flexibility and lightweight.
{"title":"Fabrication, Structural and Biological Application of SiC/TaC-Nanoparticles-Doped Polycarbonate (PC)","authors":"Wissam Obeis Obaid, Ahmed Hashim","doi":"10.15407/nnn.20.04.1009","DOIUrl":"https://doi.org/10.15407/nnn.20.04.1009","url":null,"abstract":"The structural properties of polycarbonate/silicon carbide–tantalum carbide nanocomposites are investigated for antibacterial application. The nanocomposites are prepared by casting method with various ratios of SiC/TaC nanoparticles: 1.2, 2.4, 3.6 and 4.8 wt.%. The experimental re-sults show that high distribution of SiC–TaC nanoparticles inside the pol-ycarbonate matrix. The antibacterial activity of the nanocomposites increases with the increase in the SiC–TaC-nanoparticles’ concentration. Finally, the prepared nanocomposites have high antibacterial activity with a low cost, flexibility and lightweight.","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46225541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Huda Abdul, Jalil Hussien, Aseel A. Hadi, Ahmed Hashim
High-energies-absorbing materials are fabricated as shields for bioenvi-ronmental applications to attenuate the high photons’ energies with a low cost, lightweight
高能量吸收材料作为生物环境防护材料，以低成本、轻量化的方式衰减高光子能量
{"title":"High UV-Absorbing Films Fabricated from Low-Cost and Lightweight Materials for Bioenvironmental Application","authors":"Huda Abdul, Jalil Hussien, Aseel A. Hadi, Ahmed Hashim","doi":"10.15407/nnn.20.04.1001","DOIUrl":"https://doi.org/10.15407/nnn.20.04.1001","url":null,"abstract":"High-energies-absorbing materials are fabricated as shields for bioenvi-ronmental applications to attenuate the high photons’ energies with a low cost, lightweight","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45350219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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