Marin Matei Corciu, Nicusor Alin Sirbu, Alin Constantin Murariu, Marius Cocard, Alexandru Adrian Geana
Fiber-reinforced 3D printing filaments are composite materials compounded with short, chopped additives (in this paper case glass fibers) in a polymer matrix base. Engineering filaments and reinforced filaments have gotten a lot more popular in the last few years due to their capabilities and added properties given by the reinforced material. The biggest drawback reinforced materials have other than the cost is the printability. Due to the abrasive nature of glass fiber to be able to successfully print it certain modifications to the FDM equipment must be made, such as using a tempered steel nozzle. It is also recommended to print the components in a temperature-controlled room and to keep the humidity level of the material before printing as low as possible. In this paper a glass fiber reinforced PA6 filament was tested using different printing parameters (temperature, printing speed, layer height) to establish the optimal parameters for reducing the risk reinforced materials pose for the FDM equipment while also looking for the best mechanical properties of the printed parts.
{"title":"Optimization of the Printing Parameters of Glass Fiber Reinforced PA6 Using Factorial Experiments","authors":"Marin Matei Corciu, Nicusor Alin Sirbu, Alin Constantin Murariu, Marius Cocard, Alexandru Adrian Geana","doi":"10.4028/p-61cdpu","DOIUrl":"https://doi.org/10.4028/p-61cdpu","url":null,"abstract":"Fiber-reinforced 3D printing filaments are composite materials compounded with short, chopped additives (in this paper case glass fibers) in a polymer matrix base. Engineering filaments and reinforced filaments have gotten a lot more popular in the last few years due to their capabilities and added properties given by the reinforced material. The biggest drawback reinforced materials have other than the cost is the printability. Due to the abrasive nature of glass fiber to be able to successfully print it certain modifications to the FDM equipment must be made, such as using a tempered steel nozzle. It is also recommended to print the components in a temperature-controlled room and to keep the humidity level of the material before printing as low as possible. In this paper a glass fiber reinforced PA6 filament was tested using different printing parameters (temperature, printing speed, layer height) to establish the optimal parameters for reducing the risk reinforced materials pose for the FDM equipment while also looking for the best mechanical properties of the printed parts.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135858204","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}
Vlad Ștefan Constantin, Alexandru Adrian Geana, Marin Matei Corciu
This paper will present the advantages of developing the 3D printing process of nanomaterials in different fields such as electronics, biomedical and bioelectronics. As it is already known, nanomaterials are starting to become more and more useful, and more emphasis is being put on the development of new technologies to enable the use of these materials. Nanomaterials consist mainly of chemical substances made up from very small particles that are no larger than a hundred nanometers. These materials occur in nature, they can be an accidental product of human activity, or they can be consciously made to develop new characteristics such as strength, chemical reactivity or increased conductivity compared to the same material that does not display nanometric characteristics. By integrating nanomaterials to 3D printing technology, it is possible to create unique structures, which are difficult to achieve. Nanomaterials can possibly work on personal satisfaction and add to the advancement of European industry. However, new materials can also pose health and environmental risks. Scientific research has turned its attention to the potential outcomes of the production and application of nanomaterials. Meanwhile, the newest method for 3D printing of nanomaterials is Multiphase Direct Ink Writing (MDIW), a method developed from Direct Ink Writing (DIW), a revolutionary additive manufacturing mechanism with wide applications in structural engineering systems, thermal isolation, electrical conductivity, optical reflectivity, and biomedical scaffolds.
{"title":"Aspects Regarding of Nanomaterials and Nanocomposites in 3D Printing Technology Process Development for Application in Biomedicine","authors":"Vlad Ștefan Constantin, Alexandru Adrian Geana, Marin Matei Corciu","doi":"10.4028/p-5csx5x","DOIUrl":"https://doi.org/10.4028/p-5csx5x","url":null,"abstract":"This paper will present the advantages of developing the 3D printing process of nanomaterials in different fields such as electronics, biomedical and bioelectronics. As it is already known, nanomaterials are starting to become more and more useful, and more emphasis is being put on the development of new technologies to enable the use of these materials. Nanomaterials consist mainly of chemical substances made up from very small particles that are no larger than a hundred nanometers. These materials occur in nature, they can be an accidental product of human activity, or they can be consciously made to develop new characteristics such as strength, chemical reactivity or increased conductivity compared to the same material that does not display nanometric characteristics. By integrating nanomaterials to 3D printing technology, it is possible to create unique structures, which are difficult to achieve. Nanomaterials can possibly work on personal satisfaction and add to the advancement of European industry. However, new materials can also pose health and environmental risks. Scientific research has turned its attention to the potential outcomes of the production and application of nanomaterials. Meanwhile, the newest method for 3D printing of nanomaterials is Multiphase Direct Ink Writing (MDIW), a method developed from Direct Ink Writing (DIW), a revolutionary additive manufacturing mechanism with wide applications in structural engineering systems, thermal isolation, electrical conductivity, optical reflectivity, and biomedical scaffolds.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135858640","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}
Jessalyn C. Grumo, Lady Jaharah Jabber Bulayog, Arnold A. Lubguban, Rey Capangpangan, Akihiro Yabuki, Arnold C. Alguno
The effects of nanocellulose extracted from pineapple leaf fiber on the physico-chemical and thermal properties of epoxy nanocomposite are reported. Nanocellulose was added to the epoxy in different amounts of loadings (0.5, 1.0, 1.5, and 2.0 wt.%) to prepare nanocomposites. The physico-chemical and thermal properties of the nanocellulose reinforced epoxy nanocomposites were investigated. Surface characterization of the nanocomposite was done using scanning electron microscopy (SEM). Functional groups of the nanocomposites were evaluated using fourier transform infrared (FTIR) spectroscopy. Thermal properties of the nanocomposites were investigated using thermogravimetric analyzer (TGA) and differential thermal analyzer (DTA). Experimental results revealed that the 0.5, 1.0, and 1.5 wt.% nanocellulose loadings were homogeneously distributed and well-dispersed in the composite matrix as indicated in the SEM images. However, aggregation was observed in the matrix with 2.0 wt.% nanocellulose loading. Moreover, FTIR spectra revealed that the absorbance of the vibrational mode corresponding to the interaction of nanocellulose and epoxy matrices significantly increases as the nanocellulose loading ratio increased. Furthermore, thermal analysis (TGA/DTA) showed that the incorporation of nanocellulose improved significantly the thermal properties of epoxy nanocomposites.
{"title":"Effects of Nanocellulose Extracted from Pineapple Leaf Fiber Incorporation on the Physico-Chemical and Thermal Properties of Reinforced Epoxy Nanocomposites","authors":"Jessalyn C. Grumo, Lady Jaharah Jabber Bulayog, Arnold A. Lubguban, Rey Capangpangan, Akihiro Yabuki, Arnold C. Alguno","doi":"10.4028/p-omr6hu","DOIUrl":"https://doi.org/10.4028/p-omr6hu","url":null,"abstract":"The effects of nanocellulose extracted from pineapple leaf fiber on the physico-chemical and thermal properties of epoxy nanocomposite are reported. Nanocellulose was added to the epoxy in different amounts of loadings (0.5, 1.0, 1.5, and 2.0 wt.%) to prepare nanocomposites. The physico-chemical and thermal properties of the nanocellulose reinforced epoxy nanocomposites were investigated. Surface characterization of the nanocomposite was done using scanning electron microscopy (SEM). Functional groups of the nanocomposites were evaluated using fourier transform infrared (FTIR) spectroscopy. Thermal properties of the nanocomposites were investigated using thermogravimetric analyzer (TGA) and differential thermal analyzer (DTA). Experimental results revealed that the 0.5, 1.0, and 1.5 wt.% nanocellulose loadings were homogeneously distributed and well-dispersed in the composite matrix as indicated in the SEM images. However, aggregation was observed in the matrix with 2.0 wt.% nanocellulose loading. Moreover, FTIR spectra revealed that the absorbance of the vibrational mode corresponding to the interaction of nanocellulose and epoxy matrices significantly increases as the nanocellulose loading ratio increased. Furthermore, thermal analysis (TGA/DTA) showed that the incorporation of nanocellulose improved significantly the thermal properties of epoxy nanocomposites.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135859121","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}
Stefan Adrian Timpea, Cosmin Codrean, Nicusor Alin Sirbu, Adrian Ilie Dume, Cristian Cosma, Viorel Aurel Serban
The lattice structures are a particular type of structures made by the multiply of a unit cell. In addition, their structure is close to some physiological tissues and bone structure, which can allow their use to develop prostheses needed to the rehabilitation or replacement of a body part. Lattice structures are widely used in various engineering applications due to their high weight-to-strength ratio and exceptional energy absorbing performance. The feasibility of using different base materials to fabricate these cellular structures with complex geometries has been significantly widen with the development of additive manufacturing (AM) technology. Additive manufacturing in particular metal selective laser melting (SLM) processes are rapidly being industrialized. In this work, samples with different lattice structures were manufactured by SLM technique using CoCr powder alloy. Compression tests were carried out to characterize their mechanical behavior. Starting from a BCC lattice cell measuring 5x5x5mm and 1mm diameter of the strut, were designed using Catia V5 R19 software. The BCC lattice unit cell consists of 4 solid struts with circular cross-section by which they intersected at 45°angle and modify by adding radius at the intersection of all four struts, furthermore the empty space is filled with BCC cell to increase the stiffens of the structure. The BCC cell was duplicate in three directions (X, Y, Z) measuring 20mm in each direction. To obtain the final part the BCC structure ware intersected with a cylindrical part measuring 20mm in Z direction, 15mm diameter and 1mm wall thickness, resulting a cylindrical part with three different BCC lattice structure inside.
晶格结构是一种特殊类型的结构，由一个单细胞的乘法组成。此外，它们的结构与一些生理组织和骨骼结构接近，这使得它们可以用来开发康复或替换身体部位所需的假肢。晶格结构由于具有高的重量强度比和优异的吸能性能而广泛应用于各种工程应用中。随着增材制造(AM)技术的发展，使用不同的基础材料制造这些具有复杂几何形状的细胞结构的可行性已经大大扩大。增材制造特别是金属选择性激光熔化(SLM)工艺正在迅速工业化。本文以CoCr粉末合金为材料，采用SLM技术制备了具有不同晶格结构的样品。进行了压缩试验，以表征其力学性能。采用Catia V5 R19软件，从尺寸为5x5x5mm和1mm直径的BCC点阵单元开始设计。BCC晶格单元格由4个实心圆截面支柱组成，支柱之间以45°角相交，并在四个支柱的交点处增加半径进行修改，并且在空白空间中填充BCC单元以增加结构的刚度。在三个方向(X, Y, Z)复制BCC细胞，每个方向测量20mm。为了得到最终零件，BCC结构与Z向20mm、直径15mm、壁厚1mm的圆柱形零件相交，得到一个内部有三种不同BCC晶格结构的圆柱形零件。
{"title":"Compressive Behavior of Various BCC Lattice Structure","authors":"Stefan Adrian Timpea, Cosmin Codrean, Nicusor Alin Sirbu, Adrian Ilie Dume, Cristian Cosma, Viorel Aurel Serban","doi":"10.4028/p-vo3r4q","DOIUrl":"https://doi.org/10.4028/p-vo3r4q","url":null,"abstract":"The lattice structures are a particular type of structures made by the multiply of a unit cell. In addition, their structure is close to some physiological tissues and bone structure, which can allow their use to develop prostheses needed to the rehabilitation or replacement of a body part. Lattice structures are widely used in various engineering applications due to their high weight-to-strength ratio and exceptional energy absorbing performance. The feasibility of using different base materials to fabricate these cellular structures with complex geometries has been significantly widen with the development of additive manufacturing (AM) technology. Additive manufacturing in particular metal selective laser melting (SLM) processes are rapidly being industrialized. In this work, samples with different lattice structures were manufactured by SLM technique using CoCr powder alloy. Compression tests were carried out to characterize their mechanical behavior. Starting from a BCC lattice cell measuring 5x5x5mm and 1mm diameter of the strut, were designed using Catia V5 R19 software. The BCC lattice unit cell consists of 4 solid struts with circular cross-section by which they intersected at 45°angle and modify by adding radius at the intersection of all four struts, furthermore the empty space is filled with BCC cell to increase the stiffens of the structure. The BCC cell was duplicate in three directions (X, Y, Z) measuring 20mm in each direction. To obtain the final part the BCC structure ware intersected with a cylindrical part measuring 20mm in Z direction, 15mm diameter and 1mm wall thickness, resulting a cylindrical part with three different BCC lattice structure inside.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135859097","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":"Nano Hybrids and Composites Vol. 41","authors":"N. Sîrbu, A. Shidiq","doi":"10.4028/b-zntfa7","DOIUrl":"https://doi.org/10.4028/b-zntfa7","url":null,"abstract":"","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"50 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139319578","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}
Mohammad Masykuri, Herlina Nofitasari, Romy Dyah Rahmawati
Noise has a wide impact on human health and non-health. One of the sound-absorbing materials commonly used in the community is polyurethane-urea foam. However, public concerns about the environment because the availability of petroleum as a raw material for polyurethane-urea foam synthesis is limited, and the waste pollutes the environment, posing a new challenge to be researched. For this reason, this study aims to develop polyurethane-urea foam with a mixture of natural fiber waste as an eco-friendly alternative to sound-absorbing materials. The raw materials used were natural fiber waste (rice straw waste and plywood industry sawdust waste) and chemicals (PEG, MDI, EDA, MAH), with a waste composition of 5% (w/w). The synthesis method employed was a one-shot method. The synthesized foam was characterized by FTIR, camera microscope, SEM, TGA and acoustic tests. The results uncovered that the sample had peaks in the absorption of the functional groups NH, OH, Urethane, Aromatic, and Amide. The morphological structure of the foam consisted of an open cell and a closed cell. Its thermal resistance was above 125°C. In addition, the foam with the highest sound-absorbing ability was polyurethane-urea foam/rice straw waste at 0.83 at a frequency of 4312 Hz.
{"title":"Eco-Friendly of Sound-Absorbing Material Based on Polyurethane-Urea with Natural Fiber Waste","authors":"Mohammad Masykuri, Herlina Nofitasari, Romy Dyah Rahmawati","doi":"10.4028/p-cpix3a","DOIUrl":"https://doi.org/10.4028/p-cpix3a","url":null,"abstract":"Noise has a wide impact on human health and non-health. One of the sound-absorbing materials commonly used in the community is polyurethane-urea foam. However, public concerns about the environment because the availability of petroleum as a raw material for polyurethane-urea foam synthesis is limited, and the waste pollutes the environment, posing a new challenge to be researched. For this reason, this study aims to develop polyurethane-urea foam with a mixture of natural fiber waste as an eco-friendly alternative to sound-absorbing materials. The raw materials used were natural fiber waste (rice straw waste and plywood industry sawdust waste) and chemicals (PEG, MDI, EDA, MAH), with a waste composition of 5% (w/w). The synthesis method employed was a one-shot method. The synthesized foam was characterized by FTIR, camera microscope, SEM, TGA and acoustic tests. The results uncovered that the sample had peaks in the absorption of the functional groups NH, OH, Urethane, Aromatic, and Amide. The morphological structure of the foam consisted of an open cell and a closed cell. Its thermal resistance was above 125°C. In addition, the foam with the highest sound-absorbing ability was polyurethane-urea foam/rice straw waste at 0.83 at a frequency of 4312 Hz.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135858346","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}
Sergiu-Valentin Galatanu, Iuliana Duma, Cosmin Florin Popa, Alin Constantin Murariu, Ion Aurel Perianu, Liviu Marsavina
The paper presents an experimental investigation of the impact properties and imperfections of the 3D printed Al4043A aluminium-silicium alloy using wire-arc additive manufacturing. Using an experimental program based on factorial experiments, correlations between the main WAAM process parameters and the related properties of the deposition were determined. Charpy impact strength investigations, using standard notched specimens, were performed on an Instron CEAST 9050 instrumented Charpy impact pendulum system following the ISO 148-1 standard. During the experimental tests, the brittle behaviour of the specimens could be observed. After the experimental tests, the impact behaviour was numerically analysed, showing a relatively good correlation between the results.
{"title":"Numerical and Experimental Study for Al4043A Aluminium-Silicium Alloy Fabricated by Wire Arc Additive Manufacturing under Dynamic Tests","authors":"Sergiu-Valentin Galatanu, Iuliana Duma, Cosmin Florin Popa, Alin Constantin Murariu, Ion Aurel Perianu, Liviu Marsavina","doi":"10.4028/p-o9colx","DOIUrl":"https://doi.org/10.4028/p-o9colx","url":null,"abstract":"The paper presents an experimental investigation of the impact properties and imperfections of the 3D printed Al4043A aluminium-silicium alloy using wire-arc additive manufacturing. Using an experimental program based on factorial experiments, correlations between the main WAAM process parameters and the related properties of the deposition were determined. Charpy impact strength investigations, using standard notched specimens, were performed on an Instron CEAST 9050 instrumented Charpy impact pendulum system following the ISO 148-1 standard. During the experimental tests, the brittle behaviour of the specimens could be observed. After the experimental tests, the impact behaviour was numerically analysed, showing a relatively good correlation between the results.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135858492","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}
Localized surface plasmon phenomena of metallic nanoparticles could be utilized for sensing applications. As the particles in the vicinity results in a near-field coupling phenomenon, a higher field enhancement factor increases the sensing sensitivity. In this research, we propose a self-assembled and closely-packed Janus gold nanoparticle (AuNP) structure for application in molecular sensing. We utilize three-phase interfacial trapping and Langmuir-Schaefer method for the fabrication of Janus AuNP layer. In our case, dodecylamine (DDA) was used as the analyte for sensing assay. We found that the color of our AuNP changes from red-wine to blue in conjunction with the phase changes from colloidal to closely-packed layer that results in a red-shift absorbance peak. In the application of sensing assay, the absorbance peak is revealed blue-shifted up to ~40 nm from pristine AuNP layer due to the adsorption of DDA on the particle surfaces. Sensitivity enhancement is also expected due to the hotspot arises from the plasmonic particles in vicinity. This research could be further developed to a sensitive and quantitative molecular sensor up to colorimetric specific biosensor.
{"title":"Fabrication of Densely-Packed Janus Gold Nanoparticles Layer by Self-Assembly for a Potential Molecular Sensing Probe","authors":"M. T. Pambudi, A. Iskandar, P. Wulandari","doi":"10.4028/p-QK9qQf","DOIUrl":"https://doi.org/10.4028/p-QK9qQf","url":null,"abstract":"Localized surface plasmon phenomena of metallic nanoparticles could be utilized for sensing applications. As the particles in the vicinity results in a near-field coupling phenomenon, a higher field enhancement factor increases the sensing sensitivity. In this research, we propose a self-assembled and closely-packed Janus gold nanoparticle (AuNP) structure for application in molecular sensing. We utilize three-phase interfacial trapping and Langmuir-Schaefer method for the fabrication of Janus AuNP layer. In our case, dodecylamine (DDA) was used as the analyte for sensing assay. We found that the color of our AuNP changes from red-wine to blue in conjunction with the phase changes from colloidal to closely-packed layer that results in a red-shift absorbance peak. In the application of sensing assay, the absorbance peak is revealed blue-shifted up to ~40 nm from pristine AuNP layer due to the adsorption of DDA on the particle surfaces. Sensitivity enhancement is also expected due to the hotspot arises from the plasmonic particles in vicinity. This research could be further developed to a sensitive and quantitative molecular sensor up to colorimetric specific biosensor.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"78 1","pages":"19 - 24"},"PeriodicalIF":0.4,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77191892","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}
A. A. Pido, Norodin A. Rangaig, A. Munio, Rayno Vic B. Janayon, Leo Cristobal C. Ambolode II
Organic functionalization of carbon nanotubes (CNTs) plays very important role in the development of electrochemical biosensors. In this study, pristine (5,5) carbon nanotube was functionalized by Ethanoic Acid (CH3COOH) using First Principles Density Functional Theory (DFT). It was found that the encapsulation of CH3COOH into the (5,5) CNT is endothermic due to the small diameter of the tube. However, interacting it outside the sidewall of the tube gives an exothermic process indicating a stable geometry. Accordingly, additional electronic bands and peaks are observed in the electronic structures of the functionalized CNT. Further, it was shown that that the p orbitals of the oxygen atoms and carbon atoms of the acid are the main contributors of the additional peaks in the valence and conduction regions, respectively. Finally, there were observed optical transitions in the functionalized CNT caused by the hybridization of the armchair CNT. Evidently, this study provided insights on more potential applications of carbon nanotubes as biosensors.
{"title":"Electronic and Optical Properties of Single-Walled Carbon Nanotube Functionalized by CH3COOH","authors":"A. A. Pido, Norodin A. Rangaig, A. Munio, Rayno Vic B. Janayon, Leo Cristobal C. Ambolode II","doi":"10.4028/p-I3oNUx","DOIUrl":"https://doi.org/10.4028/p-I3oNUx","url":null,"abstract":"Organic functionalization of carbon nanotubes (CNTs) plays very important role in the development of electrochemical biosensors. In this study, pristine (5,5) carbon nanotube was functionalized by Ethanoic Acid (CH3COOH) using First Principles Density Functional Theory (DFT). It was found that the encapsulation of CH3COOH into the (5,5) CNT is endothermic due to the small diameter of the tube. However, interacting it outside the sidewall of the tube gives an exothermic process indicating a stable geometry. Accordingly, additional electronic bands and peaks are observed in the electronic structures of the functionalized CNT. Further, it was shown that that the p orbitals of the oxygen atoms and carbon atoms of the acid are the main contributors of the additional peaks in the valence and conduction regions, respectively. Finally, there were observed optical transitions in the functionalized CNT caused by the hybridization of the armchair CNT. Evidently, this study provided insights on more potential applications of carbon nanotubes as biosensors.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"87 1","pages":"25 - 33"},"PeriodicalIF":0.4,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72972598","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}
Amir Al-Ahmed, Yun-Hae Kim, Agustinus Agung Nugroho
{"title":"Nano Hybrids and Composites Vol. 40","authors":"Amir Al-Ahmed, Yun-Hae Kim, Agustinus Agung Nugroho","doi":"10.4028/b-odrt5g","DOIUrl":"https://doi.org/10.4028/b-odrt5g","url":null,"abstract":"","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"47 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139353136","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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