Pub Date : 2023-08-22DOI: 10.2174/2666145417666230822113640
Dao-long Yang, J. Tang, B. Xing, Haichao Duan, Zijie Li
Superhydrophobic surfaces have broad application prospects in several fields due to their excellent hydrophobic properties, but the traditional methods of manufacturing superhydrophobic surfaces are time-consuming and laborious, the surface wear resistance is poor, and the chemical reagents contain toxic substances, making it difficult to promote the use of superhydrophobicity inexpensively. To solve the problems of high cost, instability, and poor mechanical properties of superhydrophobic structures, we explore the preparation methods of superhydrophobic surface structures to improve the surface superhydrophobicity and reduce manufacturing and usage costs. This paper provides an overview of the literature on preparing superhydrophobic structures and improving superhydrophobic properties. Based on the summary of the research results of other scholars, this paper focuses on the preparation of superhydrophobic surfaces by carbine-co-polymerization covalent grafting chemical reactions and the improvement of superhydrophobic properties by durable opaque coatings with vacuum-deposited layers. These two methods are simple to operate and circumvent the problem of oxidative degradation of compounds in the natural environment to produce environmental pollutants. The method I produces a low surface energy stratified micro-nano composite structure on the fiber surface of the fabric by carbon copolymerization covalent grafting reaction. The method II prepares a durable opaque coating with a vacuum-deposited layer, particularly useful on mechanical components or for any other applications not requiring an optically clear coating. This paper provides an important basis for optimizing the preparation process of superhydrophobic structures, synthesizing and developing environmentally friendly superhydrophobic materials, extending the service life of superhydrophobic materials, and provides specific guidance for improving the superhydrophobic properties and durability and enhancing the combination of superhydrophobic surfaces with additional functions.
{"title":"Progress in Superhydrophobic Structure Optimisation and Performance Enhancement: A Review","authors":"Dao-long Yang, J. Tang, B. Xing, Haichao Duan, Zijie Li","doi":"10.2174/2666145417666230822113640","DOIUrl":"https://doi.org/10.2174/2666145417666230822113640","url":null,"abstract":"\u0000\u0000Superhydrophobic surfaces have broad application prospects in several fields due to their excellent hydrophobic properties, but the traditional methods of manufacturing superhydrophobic surfaces are time-consuming and laborious, the surface wear resistance is poor, and the chemical reagents contain toxic substances, making it difficult to promote the use of superhydrophobicity inexpensively.\u0000\u0000\u0000\u0000To solve the problems of high cost, instability, and poor mechanical properties of superhydrophobic structures, we explore the preparation methods of superhydrophobic surface structures to improve the surface superhydrophobicity and reduce manufacturing and usage costs.\u0000\u0000\u0000\u0000This paper provides an overview of the literature on preparing superhydrophobic structures and improving superhydrophobic properties. Based on the summary of the research results of other scholars, this paper focuses on the preparation of superhydrophobic surfaces by carbine-co-polymerization covalent grafting chemical reactions and the improvement of superhydrophobic properties by durable opaque coatings with vacuum-deposited layers.\u0000\u0000\u0000\u0000These two methods are simple to operate and circumvent the problem of oxidative degradation of compounds in the natural environment to produce environmental pollutants. The method I produces a low surface energy stratified micro-nano composite structure on the fiber surface of the fabric by carbon copolymerization covalent grafting reaction. The method II prepares a durable opaque coating with a vacuum-deposited layer, particularly useful on mechanical components or for any other applications not requiring an optically clear coating.\u0000\u0000\u0000\u0000This paper provides an important basis for optimizing the preparation process of superhydrophobic structures, synthesizing and developing environmentally friendly superhydrophobic materials, extending the service life of superhydrophobic materials, and provides specific guidance for improving the superhydrophobic properties and durability and enhancing the combination of superhydrophobic surfaces with additional functions.\u0000","PeriodicalId":36699,"journal":{"name":"Current Materials Science","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77501848","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}
Pub Date : 2023-08-21DOI: 10.2174/2666145417666230821153025
L. Pan, Bin Qian, Yaqin Wang, Xinyu Liu, Huarui Jiang, Liang Wang
During the process of Selective Laser Melting (SLM), there is a complex nonlinear relationship between forming quality (Densification, elongation, and mechanical properties) and laser process parameters, and improper laser process parameters will directly lead to forming defects, including holes, cracks and even printing failure. Forming quality is limited by a series of factors, such as raw material properties, equipment properties, laser process parameters, and the post-treatment process, etc. In this paper, the feasibility test and density data test (laser power 130-280 w, laser scanning speed 1200-1500 mm/s, laser scanning distance 0.01 mm, and thickness 0.03 mm) were carried out by experiments. And the mathematical model of the Zl205A densification prediction curve and the densification distribution cloud plot were obtained. The BP neural network prediction system for ZL205A by SLM was developed with the help of the BP neural network toolbox. The prediction system was applied to ZL205A densification prediction with an error of less than 5%.
{"title":"A Densification prediction Model of Selective Laser Melting Based on BP Neural Network","authors":"L. Pan, Bin Qian, Yaqin Wang, Xinyu Liu, Huarui Jiang, Liang Wang","doi":"10.2174/2666145417666230821153025","DOIUrl":"https://doi.org/10.2174/2666145417666230821153025","url":null,"abstract":"\u0000\u0000During the process of Selective Laser Melting (SLM), there is a complex nonlinear relationship between forming quality (Densification, elongation, and mechanical properties) and laser process parameters, and improper laser process parameters will directly lead to forming defects, including holes, cracks and even printing failure.\u0000\u0000\u0000\u0000Forming quality is limited by a series of factors, such as raw material properties, equipment properties, laser process parameters, and the post-treatment process, etc.\u0000\u0000\u0000\u0000In this paper, the feasibility test and density data test (laser power 130-280 w, laser scanning speed 1200-1500 mm/s, laser scanning distance 0.01 mm, and thickness 0.03 mm) were carried out by experiments. And the mathematical model of the Zl205A densification prediction curve and the densification distribution cloud plot were obtained.\u0000\u0000\u0000\u0000The BP neural network prediction system for ZL205A by SLM was developed with the help of the BP neural network toolbox. The prediction system was applied to ZL205A densification prediction with an error of less than 5%.\u0000","PeriodicalId":36699,"journal":{"name":"Current Materials Science","volume":"98 3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88463213","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}
Pub Date : 2023-08-21DOI: 10.2174/2666145417666230821151753
M. Alam, Sumbul Shadab, P. Sharma, D. Paliwal
One of the most promising novel drug delivery systems is an in-situ gel, which uses a unique 'Sol to Gel' conversion to help with the slow and steady release of pharmaceuticals. An in-situ gel system enters the body as a solution but transforms into a gel once it encounters the body's internal environment. Traditional methods of ocular drug delivery, such as suspensions, eye drops, and ointments, have a number of drawbacks. These include lacrimation, obscured vision, and, most importantly, rapid precorneal clearance. As a result, many innovative methods have been created in order to address these shortcomings. In-situ gel, minidisc, ocusert, nanosuspension, collagen shield, nanoparticulate, system, niosomes, ocular iontophoresis, liposome, ocular film, dendrimers, and other methods are among them. Ocular medication delivery systems have come a long way recently, and one of the most recent innovations is in-situ ocular gel. The polymers (natural, semisynthetic, or synthetic) that make up the in-situ ocular gel system's delivery vehicle have the unique feature of a sol-gel transition when subjected to the effect of a biological stimulus, such as a change in temperature, pH, or ions. Physical appearance, clarity, pH, gelling ability, isotonicity evaluation, sterility, viscosity, In vitro drug release, and irritancy tests are all investigated in in-situ ocular gels.
{"title":"In-situ gelling platform for Ocular Drug delivery system: A new Paradigm","authors":"M. Alam, Sumbul Shadab, P. Sharma, D. Paliwal","doi":"10.2174/2666145417666230821151753","DOIUrl":"https://doi.org/10.2174/2666145417666230821151753","url":null,"abstract":"\u0000\u0000One of the most promising novel drug delivery systems is an in-situ gel, which uses a unique 'Sol to Gel' conversion to help with the slow and steady release of pharmaceuticals. An in-situ gel system enters the body as a solution but transforms into a gel once it encounters the body's internal environment. Traditional methods of ocular drug delivery, such as suspensions, eye drops, and ointments, have a number of drawbacks. These include lacrimation, obscured vision, and, most importantly, rapid precorneal clearance. As a result, many innovative methods have been created in order to address these shortcomings. In-situ gel, minidisc, ocusert, nanosuspension, collagen shield, nanoparticulate, system, niosomes, ocular iontophoresis, liposome, ocular film, dendrimers, and other methods are among them. Ocular medication delivery systems have come a long way recently, and one of the most recent innovations is in-situ ocular gel. The polymers (natural, semisynthetic, or synthetic) that make up the in-situ ocular gel system's delivery vehicle have the unique feature of a sol-gel transition when subjected to the effect of a biological stimulus, such as a change in temperature, pH, or ions. Physical appearance, clarity, pH, gelling ability, isotonicity evaluation, sterility, viscosity, In vitro drug release, and irritancy tests are all investigated in in-situ ocular gels.\u0000","PeriodicalId":36699,"journal":{"name":"Current Materials Science","volume":"140 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88548378","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}
Pub Date : 2023-08-21DOI: 10.2174/2666145417666230821162612
Mohd. Gulfam Pathan, A. Shende, A. Kadam, Rashmi G. Bade, Ram Krishna Mishra, A. Mendhe, Farhan Khan, Abdul Ghaffar Noor Mohammed, Mohammad Irshad Ansari
Conventional reinforced concrete mixes are used for building projects worldwide because they are strong and last longer. Due to its versatility with different admixtures and compositions, the conventional concrete mix has always been a research area. Researchers are investigating the compatibility of conventional concrete with natural fibers to inexpensively attain maximum strength in concrete, as conventional concrete adds strength by adding fibers. In this research, the durability test, acid and alkaline attack test, and wetting and drying test are performed to evaluate the concrete mix. The mix design for M25, M35, and M50 grade concrete with and without sisal fiber is completed in this work. Overall, findings from several analyses suggest that sisal fiber concrete outperforms conventional concrete in terms of strength and durability. According to the study, sisal fiber concrete can be used instead of conventional concrete to achieve superior outcomes and sustainability. In this research novel, composite material sisal fibre is with traditional concrete, and its strength is determined for different parameters required for any civil construction work.
{"title":"A Novel Composite Material (Agave sisalana), Sisal Fiber as a Reinforced natural fiber for Sustainable and Durable Concrete","authors":"Mohd. Gulfam Pathan, A. Shende, A. Kadam, Rashmi G. Bade, Ram Krishna Mishra, A. Mendhe, Farhan Khan, Abdul Ghaffar Noor Mohammed, Mohammad Irshad Ansari","doi":"10.2174/2666145417666230821162612","DOIUrl":"https://doi.org/10.2174/2666145417666230821162612","url":null,"abstract":"\u0000\u0000Conventional reinforced concrete mixes are used for building projects worldwide because they are strong and last longer. Due to its versatility with different admixtures and compositions, the conventional concrete mix has always been a research area. Researchers are investigating the compatibility of conventional concrete with natural fibers to inexpensively attain maximum strength in concrete, as conventional concrete adds strength by adding fibers.\u0000\u0000\u0000\u0000In this research, the durability test, acid and alkaline attack test, and wetting and drying test are performed to evaluate the concrete mix.\u0000\u0000\u0000\u0000The mix design for M25, M35, and M50 grade concrete with and without sisal fiber is completed in this work. Overall, findings from several analyses suggest that sisal fiber concrete outperforms conventional concrete in terms of strength and durability. According to the study, sisal fiber concrete can be used instead of conventional concrete to achieve superior outcomes and sustainability.\u0000\u0000\u0000\u0000In this research novel, composite material sisal fibre is with traditional concrete, and its strength is determined for different parameters required for any civil construction work.\u0000","PeriodicalId":36699,"journal":{"name":"Current Materials Science","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80858835","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}
Pub Date : 2023-08-16DOI: 10.2174/2666145417666230816091446
T. Prakash, V. P. PradeepPradeep, T. Suresh, S. James Raja
In the current research work, an attempt has been made to machine Ti6Al4V using Powder Mixed Electric Discharge Machining (PMEDM) technique. The experiments were designed utilizing central composite response surface methodology by varying current, pulse on time, gap distance, and powder concentration at five different levels, whereas Material Removal Rate (MRR), Tool Wear Rate (TWR), and Surface Roughness (Ra) were documented as responses. The MRR reduced with an increase in powder concentration until the concentration reached 7.5g/l because incorporated particles observed the major proportion of heat, and at 10g/l, MRR increased due to the bridging effect. The TWR and Ra reduced with an escalation in powder concentration due to expansion in the spark gap, facilitating the flushing of machined debris. The surface topography revealed cracks, pits, globules, and craters. Moreover, with the addition of particles, surface quality improved owing to the elimination of re-melted layers. The parameters were optimized using the Grey Relational Analysis (GRA), and the combination of 2.5g/l powder concentration, 20A current, 50µs ton, and 4mm gap distance offers the best machining performance.
{"title":"Electric Discharge Machining of Titanium Alloy under Cu Mixed Dielectric Medium","authors":"T. Prakash, V. P. PradeepPradeep, T. Suresh, S. James Raja","doi":"10.2174/2666145417666230816091446","DOIUrl":"https://doi.org/10.2174/2666145417666230816091446","url":null,"abstract":"\u0000\u0000In the current research work, an attempt has been made to machine Ti6Al4V using Powder Mixed Electric Discharge Machining (PMEDM) technique.\u0000\u0000\u0000\u0000The experiments were designed utilizing central composite response surface methodology by varying current, pulse on time, gap distance, and powder concentration at five different levels, whereas Material Removal Rate (MRR), Tool Wear Rate (TWR), and Surface Roughness (Ra) were documented as responses. The MRR reduced with an increase in powder concentration until the concentration reached 7.5g/l because incorporated particles observed the major proportion of heat, and at 10g/l, MRR increased due to the bridging effect.\u0000\u0000\u0000\u0000The TWR and Ra reduced with an escalation in powder concentration due to expansion in the spark gap, facilitating the flushing of machined debris. The surface topography revealed cracks, pits, globules, and craters. Moreover, with the addition of particles, surface quality improved owing to the elimination of re-melted layers.\u0000\u0000\u0000\u0000The parameters were optimized using the Grey Relational Analysis (GRA), and the combination of 2.5g/l powder concentration, 20A current, 50µs ton, and 4mm gap distance offers the best machining performance.\u0000","PeriodicalId":36699,"journal":{"name":"Current Materials Science","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78399549","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}
Pub Date : 2023-08-04DOI: 10.2174/2666145417666230804094412
Subhalaxmi Pradhan, C. Madankar, Priti K. Borde, Ninad V. Mhatre
Synthetic surfactants, when released into the environment, do not degrade completely and show harmful effects. To minimize the damage to the environment and to introduce milder surfactants, it was necessary to introduce bio-surfactants. Optimization of the yield is performed by using a design expert model. The analysis of the product was carried out by using different techniques. The formulation of the personal care product was prepared by using the sophorolipid produced. Different compositions of raw materials are used, suggested by Design expert software to optimize the yield of the sophorolipid. Fermentation was performed by the shake flask method at specified conditions in the incubator shaker for the synthesis. The extraction and separation of the sophorolipid were done by the solvent extraction method. The predicted product yield value is close to the actual value of the product obtained, which indicates the model is accurate to use. The effect of the raw materials on the yield can be studied with the design expert model. The product is analyzed for its composition and properties with different analysis methods. Mathematical modelling is very helpful in predicting the optimum reaction condition and improving the yield of a particular bio-process. The RSM model of design expert software can be further utilized to carry out the in-detail study of the various factors and their effect on optimizing the yield. The sophorolipid can be used in different formulations as a greener and safe alternative to a chemical-based surfactant.
{"title":"Optimization of synthesis of microbial bio-surfactant sophorolipids using response surface methodology","authors":"Subhalaxmi Pradhan, C. Madankar, Priti K. Borde, Ninad V. Mhatre","doi":"10.2174/2666145417666230804094412","DOIUrl":"https://doi.org/10.2174/2666145417666230804094412","url":null,"abstract":"\u0000\u0000Synthetic surfactants, when released into the environment, do not degrade completely and show harmful effects. To minimize the damage to the environment and to introduce milder surfactants, it was necessary to introduce bio-surfactants.\u0000\u0000\u0000\u0000Optimization of the yield is performed by using a design expert model. The analysis of the product was carried out by using different techniques. The formulation of the personal care product was prepared by using the sophorolipid produced.\u0000\u0000\u0000\u0000Different compositions of raw materials are used, suggested by Design expert software to optimize the yield of the sophorolipid. Fermentation was performed by the shake flask method at specified conditions in the incubator shaker for the synthesis. The extraction and separation of the sophorolipid were done by the solvent extraction method.\u0000\u0000\u0000\u0000The predicted product yield value is close to the actual value of the product obtained, which indicates the model is accurate to use. The effect of the raw materials on the yield can be studied with the design expert model. The product is analyzed for its composition and properties with different analysis methods.\u0000\u0000\u0000\u0000Mathematical modelling is very helpful in predicting the optimum reaction condition and improving the yield of a particular bio-process. The RSM model of design expert software can be further utilized to carry out the in-detail study of the various factors and their effect on optimizing the yield. The sophorolipid can be used in different formulations as a greener and safe alternative to a chemical-based surfactant.\u0000","PeriodicalId":36699,"journal":{"name":"Current Materials Science","volume":"os-35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87222423","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}
Pub Date : 2023-08-01DOI: 10.2174/2666145417666230801093723
Ana Pedrosa, Florindo Gaspar
This review article discusses the relevant rheological tests to evaluate the properties of compositions applied to the 3D printing of concrete (3DCP). These materials must rapidly develop rigidity and resistance, avoiding the collapse of the printed structure, with suitable buildability and other state properties, such as extrudability. A good balance must be maintained between properties and rheological parameters, such as yield stress and viscosity. Cohesion, Young's modulus, and thixotropy are also among the parameters used in these evaluations. The rheological tests addressed are the rheometer, direct shear test, uniaxial unconfined compression test, and penetration test. Their limitations must be taken into account to obtain accurate values of the rheological parameters. It was found that the most used test is the rheometer, and the test that needs to be further studied is the penetration test. Hence, it is recommended to search for a more expeditious method related to the rheological assessment to facilitate obtaining the associated parameters in a simple way.
{"title":"Rheology assessment of mortar materials for additive manufacturing","authors":"Ana Pedrosa, Florindo Gaspar","doi":"10.2174/2666145417666230801093723","DOIUrl":"https://doi.org/10.2174/2666145417666230801093723","url":null,"abstract":"\u0000\u0000This review article discusses the relevant rheological tests to evaluate the properties of compositions applied to the 3D printing of concrete (3DCP). These materials must rapidly develop rigidity and resistance, avoiding the collapse of the printed structure, with suitable buildability and other state properties, such as extrudability. A good balance must be maintained between properties and rheological parameters, such as yield stress and viscosity. Cohesion, Young's modulus, and thixotropy are also among the parameters used in these evaluations. The rheological tests addressed are the rheometer, direct shear test, uniaxial unconfined compression test, and penetration test. Their limitations must be taken into account to obtain accurate values of the rheological parameters. It was found that the most used test is the rheometer, and the test that needs to be further studied is the penetration test. Hence, it is recommended to search for a more expeditious method related to the rheological assessment to facilitate obtaining the associated parameters in a simple way.\u0000","PeriodicalId":36699,"journal":{"name":"Current Materials Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84814217","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}
Pub Date : 2023-07-26DOI: 10.2174/2666145417666230726153437
Santos Sc, Martins As, Araujo Tl, Rodrigues Jr O, Campos Ll
Powder technology provides conditions to control particle-particle interactions that drive the formation of final-component/material, which also includes the crystalline structure, microstructure and features. Alumina (Al2O3) is the most studied ceramic based material due to its useful properties, disposal, competitive price, and wide technological applicability. This work aims to produce alumina crucibles with controlled size and shape from free dispensant suspensions. These crucibles will be used as containers for the synthesis of new materials for radiation dosimetry. The Al2O3 powders were characterized by XRD, SEM, PCS, and EPR. The stability of alumina particles in an aqueous solvent was evaluated by zeta potential determination as a function of pH. Alumina suspensions with 30vol% were shaped by slip casting in plaster molds, followed by sintering at 1600oC for 2h in an air atmosphere. Alumina based crucibles were characterized by SEM and XRD. ɑ-Al2O3 powders exhibited a mean particle diameter size (d50) of 983nm. Besides, the stability of particles in aqueous solvent was achieved at a range of pH from 2.0-6.0, and from 8.5-11.0. EPR spectra revealed two resonance peaks P1 and P2, with g-values of 2.0004 and 2.0022, respectively. The as-sintered ɑ-alumina based crucibles presented uniform shape and controlled size with no apparent defects. In addition, the final microstructure driven by solid-state sintering revealed a dense surface and uniform distribution of grains. The ɑ-Al2O3 crucibles obtained by slip casting of free dispensant alumina suspensions, followed by sintering, exhibited mechanical strength, and controlled shape and size. These crucibles will be useful labwares for the synthesis of new materials for radiation dosimetry.
{"title":"Alumina Crucibles from Free Dispersant Suspensions: A Useful Labware to form Advanced Powders for Radiation Dosimetry","authors":"Santos Sc, Martins As, Araujo Tl, Rodrigues Jr O, Campos Ll","doi":"10.2174/2666145417666230726153437","DOIUrl":"https://doi.org/10.2174/2666145417666230726153437","url":null,"abstract":"\u0000\u0000Powder technology provides conditions to control particle-particle interactions that drive the formation of final-component/material, which also includes the crystalline structure, microstructure and features. Alumina (Al2O3) is the most studied ceramic based material due to its useful properties, disposal, competitive price, and wide technological applicability. This work aims to produce alumina crucibles with controlled size and shape from free dispensant suspensions. These crucibles will be used as containers for the synthesis of new materials for radiation dosimetry.\u0000\u0000\u0000\u0000The Al2O3 powders were characterized by XRD, SEM, PCS, and EPR. The stability of alumina particles in an aqueous solvent was evaluated by zeta potential determination as a function of pH. Alumina suspensions with 30vol% were shaped by slip casting in plaster molds, followed by sintering at 1600oC for 2h in an air atmosphere. Alumina based crucibles were characterized by SEM and XRD.\u0000\u0000\u0000\u0000ɑ-Al2O3 powders exhibited a mean particle diameter size (d50) of 983nm. \u0000Besides, the stability of particles in aqueous solvent was achieved at a range of pH from 2.0-6.0, and from 8.5-11.0. EPR spectra revealed two resonance peaks P1 and P2, with g-values of 2.0004 and 2.0022, respectively. The as-sintered ɑ-alumina based crucibles presented uniform shape and controlled size with no apparent defects. In addition, the final microstructure driven by solid-state sintering revealed a dense surface and uniform distribution of grains.\u0000\u0000\u0000\u0000The ɑ-Al2O3 crucibles obtained by slip casting of free dispensant alumina suspensions, followed by sintering, exhibited mechanical strength, and controlled shape and size. These crucibles will be useful labwares for the synthesis of new materials for radiation dosimetry.\u0000","PeriodicalId":36699,"journal":{"name":"Current Materials Science","volume":"149 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79404059","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}
Pub Date : 2023-07-21DOI: 10.2174/2666145417666230721115902
F. Hung
This study investigated the characteristics of the powder, the concentration of the ions, and the growth characteristics of Chili that were irrigated with the natural magnesium–zinc ionised water. The findings revealed that the ion dissolution rate was higher for greater water temperatures. Extended sintering of the zinc-modified natural serpentinite powder at 400°C reduced the number of dissolved magnesium ions and increased the number of dissolved zinc ions. The Chili planting experiment was performed with two groups: 1) Chili irrigated with natural magnesium–zinc ionised water (natural magnesium–zinc Chili) and 2) Chili irrigated with distilled water (distilled-water Chili). The natural magnesium–zinc Chilis were discovered to have higher concentrations of magnesium and zinc ions in various parts. Furthermore, during the later stages of growth, the natural magnesium–zinc Chili had a larger body and did not easily turn yellow, resulting in better freshness. This study used modified serpentine powder to cultivate natural magnesium–zinc Chili. Appropriate powder roasting conditions and the rates of magnesium and zinc dissolution were established, and the growth characteristics of natural magnesium–zinc Chili were determined. The Chilis can help humans ensure healthy lives and promote well-being for all at all ages by sufficient zinc and magnesium intake.
{"title":"Biological applications of ore materials: Chili absorption of natural Mg and Zn ions released from modified serpentinite powders","authors":"F. Hung","doi":"10.2174/2666145417666230721115902","DOIUrl":"https://doi.org/10.2174/2666145417666230721115902","url":null,"abstract":"\u0000\u0000This study investigated the characteristics of the powder, the concentration of the ions, and the growth characteristics of Chili that were irrigated with the natural magnesium–zinc ionised water. The findings revealed that the ion dissolution rate was higher for greater water temperatures.\u0000\u0000\u0000\u0000Extended sintering of the zinc-modified natural serpentinite powder at 400°C reduced the number of dissolved magnesium ions and increased the number of dissolved zinc ions. The Chili planting experiment was performed with two groups: 1) Chili irrigated with natural magnesium–zinc ionised water (natural magnesium–zinc Chili) and 2) Chili irrigated with distilled water (distilled-water Chili).\u0000\u0000\u0000\u0000The natural magnesium–zinc Chilis were discovered to have higher concentrations of magnesium and zinc ions in various parts. Furthermore, during the later stages of growth, the natural magnesium–zinc Chili had a larger body and did not easily turn yellow, resulting in better freshness. This study used modified serpentine powder to cultivate natural magnesium–zinc Chili. Appropriate powder roasting conditions and the rates of magnesium and zinc dissolution were established, and the growth characteristics of natural magnesium–zinc Chili were determined.\u0000\u0000\u0000\u0000The Chilis can help humans ensure healthy lives and promote well-being for all at all ages by sufficient zinc and magnesium intake.\u0000","PeriodicalId":36699,"journal":{"name":"Current Materials Science","volume":"325 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81994297","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}
Pub Date : 2023-07-21DOI: 10.2174/2666145417666230721120925
Xiaojing Zheng
Packaging materials design is related to economic and social development. At the same time, it also reflects human aesthetic and emotional expression. With the continuous maturity of consumer psychology, people have a new understanding of packaging design, and the past packaging materials design concepts can no longer meet the various needs of customers. As is known, packaging plays a very important role in promoting products to customers. Therefore, attractive packaging materials design is essential. In this work, the developing history of packing materials design was reviewed in detail. Both the advantages and disadvantages of the packing materials were discussed. Packaging materials experienced the process from paper, plastic, and metal to composite materials. The functions of packaging materials have gone from single to comprehensive. Driven by the commercialization of fierce competition, although humans have made great achievements in packaging material design, there is still greater room for development in packaging material design to meet the needs of future society. For a long time from now to the future, the balance between practicality and aesthetics will still be the basic principle of material packaging design. In addition, the human experience, such as the friction coefficient of packaging materials, has begun to be considered. The artistic combination of materials, shapes, colors, and characters combined with artificial intelligence has gradually become the frontier of packaging material design. By learning from nature, it can be concluded that smart packaging, eco-friendly and sustainable development in packaging materials design combining practicality and aesthetics are the developing trend for the future.
{"title":"Packaging Materials Design and Developing Trend","authors":"Xiaojing Zheng","doi":"10.2174/2666145417666230721120925","DOIUrl":"https://doi.org/10.2174/2666145417666230721120925","url":null,"abstract":"\u0000\u0000Packaging materials design is related to economic and social development. At the same time, it also reflects human aesthetic and emotional expression. With the continuous maturity of consumer psychology, people have a new understanding of packaging design, and the past packaging materials design concepts can no longer meet the various needs of customers. As is known, packaging plays a very important role in promoting products to customers. Therefore, attractive packaging materials design is essential. In this work, the developing history of packing materials design was reviewed in detail. Both the advantages and disadvantages of the packing materials were discussed. Packaging materials experienced the process from paper, plastic, and metal to composite materials. The functions of packaging materials have gone from single to comprehensive. Driven by the commercialization of fierce competition, although humans have made great achievements in packaging material design, there is still greater room for development in packaging material design to meet the needs of future society. For a long time from now to the future, the balance between practicality and aesthetics will still be the basic principle of material packaging design. In addition, the human experience, such as the friction coefficient of packaging materials, has begun to be considered. The artistic combination of materials, shapes, colors, and characters combined with artificial intelligence has gradually become the frontier of packaging material design. By learning from nature, it can be concluded that smart packaging, eco-friendly and sustainable development in packaging materials design combining practicality and aesthetics are the developing trend for the future.\u0000","PeriodicalId":36699,"journal":{"name":"Current Materials Science","volume":"68 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87984226","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：