E. Mitran, I. Sandulache, L. Secăreanu, O. Iordache, E. Perdum, Maria Memecică
In the present paper work it was evaluated the degradation degree of textile material after different types of exposure using micro-destructive methods such as: Scanning Electron Microscopy (SEM), stereomicroscope and Datacolor spectrophotometer. Thus, samples of cotton fabrics were exposed in three different methods: first – outdoors, to natural conditions, second – at a temperature of 60⁰C in an oven and third – buried in commercial plant soil in closed recipients. After 72 hours and 216 hour, specimens of the samples were taken and evaluated. Thereby, microscopic analyzes revealed that the cotton materials are more degraded after burial. The results obtained were correlated with chromatic parameters (DL*, DC*, DE*) and white degree (Berger and CIE). All the samples have color differences in comparison with the unexposed samples; they also present more saturated color and are darker. Cultural heritage represents our history, thus it is important to know how the environment works on textile materials and this way we can manage better the conservation requirements. Future studies will also be carried out on linen and woolfabrics.
{"title":"EFFECTS OF ARTIFICIAL AGEING ON TEXTILES' PROPERTIES","authors":"E. Mitran, I. Sandulache, L. Secăreanu, O. Iordache, E. Perdum, Maria Memecică","doi":"10.35530/tt.2019.28","DOIUrl":"https://doi.org/10.35530/tt.2019.28","url":null,"abstract":"In the present paper work it was evaluated the degradation degree of textile material after \u0000different types of exposure using micro-destructive methods such as: Scanning Electron Microscopy \u0000(SEM), stereomicroscope and Datacolor spectrophotometer. Thus, samples of cotton fabrics were \u0000exposed in three different methods: first – outdoors, to natural conditions, second – at a temperature of \u000060⁰C in an oven and third\u0000– buried in commercial plant soil in closed recipients. After 72 hours and 216 hour, specimens of the\u0000samples were taken and evaluated. Thereby, microscopic analyzes revealed that the cotton materials\u0000are more degraded after burial. The results obtained were correlated with chromatic parameters\u0000(DL*, DC*, DE*) and white degree (Berger and CIE). All the samples have color differences in\u0000comparison with the unexposed samples; they also present more saturated color and are darker.\u0000Cultural heritage represents our history, thus it is important to know how the environment works on\u0000textile materials and this way we can manage better the conservation requirements. Future studies will\u0000also be carried out on linen and woolfabrics.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"283 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77842745","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}
G. Pîrcălăbioru, B. Tihauan, Mădălina Axinie, A. Ivanof, S. Maier
Implantation of any prosthetic material triggers a cascade of events that mark the initiation of the healing process. In the case of abdominal mesh implantation, the course of inflammation and wound healing are paramount. The biomaterials employed as a medical device are in close proximity with devitalized tissue parts which can promote microbial colonization resulting in infection and subsequently impaired wound healing. The advent of nanofiber based systems provides novel opportunities to develop hernia meshes with increased biocompatibility and good material strength. Electrospun nanofiber matrices exhibit morphological similarities to the natural extra-cellular matrix (ECM), with ultrafine continuous fibers, high porosity high surface-to-volume ratio, and variable pore-size distribution. This mini review summarizes the advantages and challenges associated to nanofiber systems.
{"title":"NANOFIBER MESHES FOR ABDOMINAL HERNIA REPAIR – \u0000CHALLENGES AND OPPORTUNITIES","authors":"G. Pîrcălăbioru, B. Tihauan, Mădălina Axinie, A. Ivanof, S. Maier","doi":"10.35530/tt.2019.40","DOIUrl":"https://doi.org/10.35530/tt.2019.40","url":null,"abstract":"Implantation of any prosthetic material triggers a cascade of events that mark the \u0000initiation of the healing process. In the case of abdominal mesh implantation, the course of \u0000inflammation and wound healing are paramount. The biomaterials employed as a medical device\u0000are in close proximity with devitalized tissue parts which can promote microbial colonization \u0000resulting in infection and subsequently impaired wound healing. The advent of nanofiber \u0000based systems provides novel opportunities to develop hernia meshes with increased \u0000biocompatibility and good material strength. Electrospun nanofiber matrices exhibit morphological \u0000similarities to the natural extra-cellular matrix (ECM), with ultrafine continuous fibers, high \u0000porosity high surface-to-volume ratio, and variable pore-size distribution. This mini review \u0000summarizes the advantages and challenges associated to nanofiber systems.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78122688","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}
Denim fabrics which are highly demanded products among the world have high consumption rate in the textile market. Those fabrics may be utilized for different purposes. Durability, elasticity, wearing resistance are the important expected properties from denim fabrics. Tearing resistance of denim fabrics in use is another parameter that should be considered. This study includes the investigation of tearing properties of denim fabrics produced from single core (Polyethylene terephthalate/Polytrimethylene terephthalate (PET/PTT) bicomponent filament and elastane) and dual core (PET/PTT+elastane feeding simultaneously) spun yarns utilized as weft yarns. Denim fabrics with different layout of these weft yarns with uncovered PET/PTT bicomponent filament were produced in order to compare the tearing strength properties in warp and weft wise. Results revealed that highest tearing strength of weft wise was obtained from denim fabrics at 2F:2CY layout where two uncovered PET/PTT bicomponent filament and two PET/PTT bicomponent filament+elastane dual core-spun yarn were used consecutively in the layouts. The lowest tearing strength was found among the denim fabrics at 1F:6CY layout where one uncovered PET/PTT bicomponent filament and six PET/PTT bicomponent filament+elastane dual core-spun yarns were used consecutively in the layouts. According to statistical evaluation; Weft yarn type, weft yarn layout and their interaction in the fabric were found to having significant effects on tearing strength for both warp and weft direction of denim fabric at significance level of 0.05.
{"title":"THE TEARING STRENGTH ANALYSIS OFDENIM FABRICS WITH \u0000DIFFERENT WEFT YARN TYPE AND WEFT YARN LAYOUT","authors":"M. Avcı, E. Sarıoğlu, G. K. Günaydin","doi":"10.35530/tt.2019.27","DOIUrl":"https://doi.org/10.35530/tt.2019.27","url":null,"abstract":"Denim fabrics which are highly demanded products among the world have high consumption rate in \u0000the textile market. Those fabrics may be utilized for different purposes. Durability, elasticity, wearing\u0000resistance are the important expected properties from denim fabrics. Tearing resistance of denim fabrics in use is \u0000another parameter that should be considered. This study includes the investigation of tearing properties of \u0000denim fabrics produced from single core (Polyethylene terephthalate/Polytrimethylene terephthalate (PET/PTT) \u0000bicomponent filament and elastane) and dual core (PET/PTT+elastane feeding simultaneously) spun yarns \u0000utilized as weft yarns. Denim fabrics with different layout of these weft yarns with uncovered PET/PTT \u0000bicomponent filament were produced in order to compare the tearing strength properties in warp and weft wise. \u0000Results revealed that highest tearing strength of weft wise was obtained from denim fabrics at 2F:2CY layout \u0000where two uncovered PET/PTT bicomponent filament and two PET/PTT bicomponent filament+elastane dual \u0000core-spun yarn were used consecutively in the layouts. The lowest tearing strength was found among the denim \u0000fabrics at 1F:6CY layout where one uncovered PET/PTT bicomponent filament and six PET/PTT bicomponent \u0000filament+elastane dual core-spun yarns were used consecutively in the layouts. According to statistical \u0000evaluation; Weft yarn type, weft yarn layout and their interaction in the fabric were found to having significant \u0000effects on tearing strength for both warp and weft direction of denim fabric at significance level of 0.05.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79206597","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 work is a synthesis of the author’s previous research on weft and warp knitted fabrics response under dynamic stress and their capacity of vibration damping. The main objective of this research is to experimentally investigate the vibration behaviour of these fabrics with an existing testing method, in order to understand how the fabric structural parameters affect their vibration isolation performance. The authors have focused their interest on the knitted fabrics characterization through their natural frequencies, which were determined by employing the free vibrations method. The natural frequency is the rate at which an object vibrates when it is not disturbed by an outside force. A comparative fabrics analysis of the measured natural frequencies is performed and the main parameters of influence are discussed. An ideal knitted spacer fabric developed for anti-vibration purposes, should have the capacity of absorb energy efficiently, still having sufficient stiffness to avoid its collapse and an acceptable thickness in order to maintain a sense of touch and dexterity to complete the tasks. The preliminary results confirmed that knitted fabrics can be engineered and exploited as structures with vibration absorption capabilities.
{"title":"KNITTED MATERIALS CAPACITY FOR VIBRATION PROTECTION \u0000APPLICATIONS","authors":"M. Blaga, N. Seghedin","doi":"10.35530/tt.2019.01","DOIUrl":"https://doi.org/10.35530/tt.2019.01","url":null,"abstract":"The present work is a synthesis of the author’s previous research on weft and warp knitted fabrics \u0000response under dynamic stress and their capacity of vibration damping. The main objective of this research is to \u0000experimentally investigate the vibration behaviour of these fabrics with an existing testing method, in order to \u0000understand how the fabric structural parameters affect their vibration isolation performance. The authors have \u0000focused their interest on the knitted fabrics characterization through their natural frequencies, which were \u0000determined by employing the free vibrations method. The natural frequency is the rate at which an object \u0000vibrates when it is not disturbed by an outside force. A comparative fabrics analysis of the measured natural \u0000frequencies is performed and the main parameters of influence are discussed. An ideal knitted spacer fabric \u0000developed for anti-vibration purposes, should have the capacity of absorb energy efficiently, still having \u0000sufficient stiffness to avoid its collapse and an acceptable thickness in order to maintain a sense of touch and \u0000dexterity to complete the tasks. The preliminary results confirmed that knitted fabrics can be engineered and \u0000exploited as structures with vibration absorption capabilities.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85468588","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 contribution gives an overview of the Erasmus+ project Smart textiles for STEM training – Skills4Smartex, funded by the European Commission. Presented are main objectives, aims and expected results, focused on experiences, gained through the first year’s project activities’ in Slovenia. The project aims to improve the knowledge, skills and employability of students in the fields, related to STEM (Science, Technology, Engineering, Mathematics) by providing appropriate training tools to understand multidisciplinary work through smart textiles. The main objectives of the project are: (1) Creating a Guide on smart practices meant for supporting innovation in textile enterprises; (2) Creating a Course in smart textiles, meant for multidisciplinary thinking; (3) Creating a dedicated e-learning instrument, meant for channeling the interest of VET students for "serious games"; (4) Improving the skills of students by means of practical work in constructing smart textile prototypes. The project activities began with a survey on smart/technical textiles completed by 63 textile companies at the EU level; 10 of them were from Slovenia. The aim was to identify existing opportunities for producing smart textiles in enterprises and forecasting expected occupations and work profiles for young trainees. The results will be published in a guide meant for transferring smart practices from enterprises to Vocational Education and Training (VET) schools and young students.
{"title":"USING STEM PRINCIPLES FOR UNDERSTANDING SMART TEXTILES’ \u0000SOLUTIONS – THE SLOVENIAN EXPERIENCE","authors":"Z. Stjepanovic, A. Cupar, R. Radulescu, A. Rudolf","doi":"10.35530/tt.2019.58","DOIUrl":"https://doi.org/10.35530/tt.2019.58","url":null,"abstract":"The contribution gives an overview of the Erasmus+ project Smart textiles for STEM \u0000training – Skills4Smartex, funded by the European Commission. Presented are main objectives, aims \u0000and expected results, focused on experiences, gained through the first year’s project activities’ in \u0000Slovenia. The project aims to improve the knowledge, skills and employability of students in the \u0000fields, related to STEM (Science, Technology, Engineering, Mathematics) by providing appropriate \u0000training tools to understand multidisciplinary work through smart textiles. The main objectives of the \u0000project are: (1) Creating a Guide on smart practices meant for supporting innovation in textile \u0000enterprises; (2) Creating a Course in smart textiles, meant for multidisciplinary thinking; (3) \u0000Creating a dedicated e-learning instrument, meant for channeling the interest of VET students for \u0000\"serious games\"; (4) Improving the skills of students by means of practical work in constructing \u0000smart textile prototypes. The project activities began with a survey on smart/technical textiles \u0000completed by 63 textile companies at the EU level; 10 of them were from Slovenia. The aim was to \u0000identify existing opportunities for producing smart textiles in enterprises and forecasting expected \u0000occupations and work profiles for young trainees. The results will be published in a guide meant for \u0000transferring smart practices from enterprises to Vocational Education and Training (VET) schools \u0000and young students.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90763904","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}
F. Khoffi, Y. Khalsi, A. Tazibt, S. Msahli, F. Heim
Textile biomaterials have been largely used over the last decades as vascular grafts, hernia meshes and heart valve leaflet [1-2]. Once implanted in vivo, the natural porosity of textile materials tends to induce exaggerated tissue ingrowth, which may prevent the implants from remaining flexible [3]. One hypothesized way to limit the foreign body reaction process is to increase the material surface roughness [4]. Supercritical N2 jet particle projection is a novel technique to provide enough velocity to micro particles to induce plastic deformation on the textile impacted surface. The aim of this study is to investigate the influence of micro particles laden supercritical N2 jet projection parameters like jet static pressure, standoff distance and particle size on the roughness of PET fabric surfaces. Results bring out that particles projected by the jet N2 SC generate craters on the surface of monofilament as well as multifilament fabric, allowing topographical modifications at the yarn scale. We found that larger particles induce larger crater diameters. Moreover, increasing the static jet pressure from 300 to 1000 bars further allows increase in the crater diameter. For a pressure of 500 bar, the standoff distance must be greater than 300 mm in order to obtain significant roughness values without breaking the PET monofilament fabrics. Thus, this treatment increased the roughness of the monofilament fabric from 0.78 μm to 1.22 μm. The results obtained in this work show that it is possible to create a roughness on a PET fabric using the N2 jet technology.
{"title":"SURFACE MODIFICATION OF BIOMATERIAL FABRIC USING \u0000SUPERCRITICAL N2 JET","authors":"F. Khoffi, Y. Khalsi, A. Tazibt, S. Msahli, F. Heim","doi":"10.35530/tt.2019.36","DOIUrl":"https://doi.org/10.35530/tt.2019.36","url":null,"abstract":"Textile biomaterials have been largely used over the last decades as vascular grafts, \u0000hernia meshes and heart valve leaflet [1-2]. Once implanted in vivo, the natural porosity of textile \u0000materials tends to induce exaggerated tissue ingrowth, which may prevent the implants from \u0000remaining flexible [3]. One hypothesized way to limit the foreign body reaction process is to increase the \u0000material surface roughness [4]. Supercritical N2 jet particle projection is a novel technique to provide \u0000enough velocity to micro particles to induce plastic deformation on the textile impacted surface. The \u0000aim of this study is to investigate the influence of micro particles laden supercritical N2 jet projection \u0000parameters like jet static pressure, standoff distance and particle size on the roughness of PET fabric \u0000surfaces. Results bring out that particles projected by the jet N2 SC generate craters on the \u0000surface of monofilament as well as multifilament fabric, allowing topographical modifications \u0000at the yarn scale. We found that larger particles induce larger crater diameters. Moreover, \u0000increasing the static jet pressure from 300 to 1000 bars further allows increase in the crater \u0000diameter. For a pressure of 500 bar, the standoff distance must be greater than 300 mm in \u0000order to obtain significant roughness values without breaking the PET monofilament fabrics. \u0000Thus, this treatment increased the roughness of the monofilament fabric from 0.78 μm to 1.22 \u0000μm. The results obtained in this work show that it is possible to create a roughness on a PET \u0000fabric using the N2 jet technology.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89298872","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}
This contribution deals with the new trends related to the digitalization in garment engineering. More than ten years ago can be found complaints of clothing companies on the lack of effective CAD software to design garments directly in 3D and to provide pattern designer tools for shape modelling and simulation of cloth behavior. Today, with a mass customization, e-commerce, advances in virtual reality applications, the virtual garment development is strongly desired in order to optimize apparel industry’s design and development processes. To survive in global competitive market, garment manufacturers are forced to transform their manufacturing processes toward, having a more flexible production system to meet the rapid changes in the global market, and started the transition to a new technological level through digitalization advances and challenges of Industry 4.0. Described are the possibilities for exploiting advances in digitization in garment engineering through virtual prototyping and production of smart clothing.
{"title":"SUPPORTING DIGITALIZATION IN GARMENT ENGINEERING \u0000THROUGH VIRTUAL PROTOTYPING","authors":"A. Rudolf, A. Cupar, Z. Stjepanovic","doi":"10.35530/tt.2019.02","DOIUrl":"https://doi.org/10.35530/tt.2019.02","url":null,"abstract":"This contribution deals with the new trends related to the digitalization in garment engineering. More \u0000than ten years ago can be found complaints of clothing companies on the lack of effective CAD software to \u0000design garments directly in 3D and to provide pattern designer tools for shape modelling and simulation of cloth \u0000behavior. Today, with a mass customization, e-commerce, advances in virtual reality applications, the virtual \u0000garment development is strongly desired in order to optimize apparel industry’s design and development \u0000processes. To survive in global competitive market, garment manufacturers are forced to transform their \u0000manufacturing processes toward, having a more flexible production system to meet the rapid changes in the \u0000global market, and started the transition to a new technological level through digitalization advances and \u0000challenges of Industry 4.0. Described are the possibilities for exploiting advances in digitization in garment\u0000engineering through virtual prototyping and production of smart clothing.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74476331","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}
As a result of changing needs and technological developments; interactive technologies became a part of our daily life. Among the other structures, textile based interactive products are getting more and more attention because of their flexible, comfortable and cleanable characteristics with other structural advantages. In the early stages of the investigations, the combination of electronics and textiles were seemed not to be practicable in view of their opposite properties. With the successful results of scientific studies, the integration of electronic components into textiles offers great advantages. These products, called 'the textiles of the future', involve different functions like protection, actuation, communication etc. Various industries such as medical, security, entertainment and sport/well-being develop different types of new generation product using these functions. The development of smart wear is a new challenge for the textile and clothing industry. It has to develop products based not only on design, fashion and comfort concepts but also in terms of functions. In this study, recent developments about smart/interactive garments have been reviewed. Major application areas and futuristic R&D directions for smart textiles were investigated. Recent trends, market researches, future projections and latest developments about interactive electrotextile products have been introduced.
{"title":"INTERACTIVE ELECTROTEXTILES -\u0000ON THE WAY TO THE TEXTILES OF THE FUTURE","authors":"Ozan Kayacan","doi":"10.35530/tt.2019.05","DOIUrl":"https://doi.org/10.35530/tt.2019.05","url":null,"abstract":"As a result of changing needs and technological developments; interactive technologies became a part \u0000of our daily life. Among the other structures, textile based interactive products are getting more and more\u0000attention because of their flexible, comfortable and cleanable characteristics with other structural advantages. In \u0000the early stages of the investigations, the combination of electronics and textiles were seemed not to be practicable \u0000in view of their opposite properties. With the successful results of scientific studies, the integration of electronic \u0000components into textiles offers great advantages. These products, called 'the textiles of the future', involve \u0000different functions like protection, actuation, communication etc. Various industries such as medical, security, \u0000entertainment and sport/well-being develop different types of new generation product using these functions. The \u0000development of smart wear is a new challenge for the textile and clothing industry. It has to develop products \u0000based not only on design, fashion and comfort concepts but also in terms of functions. In this study,\u0000recent developments about smart/interactive garments have been reviewed. Major application areas and \u0000futuristic R&D directions for smart textiles were investigated. Recent trends, market researches, future \u0000projections and latest developments about interactive electrotextile products have been introduced.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73168861","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}
In the paper are presented several aspects concerning the experimental preparation for sensors and actuators by using the factorial scheme based on independent and dependent variables and principal component analysis. The leading technologies envisaged are the classical ones (padding, coating, and printing) and advanced technologies such as RF plasma, microwave, and 3D printing. PCA is a statistical procedure well known by researchers and is based on orthogonal transformation of the variables possible correlated into a set of variable linearly uncorrelated (PC). The resulting vectors are a linear combination of the variables and contain x observation and represent an uncorrelated orthogonal set. Besides, in this paper are presented several technological flows for obtaining conductive or semiconductive 3D composite materials by using the standard and advanced technologies above mentioned
{"title":"RESEARCH ON DESIGNING COMPOSITE TECHNIQUES FOR \u0000OBTAINING THE 3D HYBRID COMPOSITES WITH CONDUCTIVE \u0000AND SEMICONDUCTIVE PROPERTIES FOR SENSORS AND \u0000ACTUATORS","authors":"R. Aileni, L. Chiriac","doi":"10.35530/tt.2019.45","DOIUrl":"https://doi.org/10.35530/tt.2019.45","url":null,"abstract":"In the paper are presented several aspects concerning the experimental preparation for \u0000sensors and actuators by using the factorial scheme based on independent and dependent variables \u0000and principal component analysis. The leading technologies envisaged are the classical ones \u0000(padding, coating, and printing) and advanced technologies such as RF plasma, microwave, and \u00003D printing. PCA is a statistical procedure well known by researchers and is based on \u0000orthogonal transformation of the variables possible correlated into a set of variable linearly \u0000uncorrelated (PC). The resulting vectors are a linear combination of the variables and contain x \u0000observation and represent an uncorrelated orthogonal set. Besides, in this paper are presented \u0000several technological flows for obtaining conductive or semiconductive 3D composite \u0000materials by using the standard and advanced technologies above mentioned","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85810940","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}
GO is easily dispersed in solvents, dielectric property, transparency, electronic features can be adjusted due to the superior mechanical properties and areas of use are expanding day by day. In this study, graphene oxide was obtained from graphite by using modified Hummers method and then applied to polyester fabric surface according to multilayer coating method. Contrary to the traditional Hummers method in the literature, this study was carried out without the use of NaNO₃ in order to be environmentally friendly. Based on the Layer-by-Layer coating method, GO based nano films have been applied to the polyester fabric surface. After obtaining the GO based nanocomposite polyester fabrics, it was treated with Na₂S₂O₄ and NaBH₄ in order to obtain RGO structure and GO reduction was achieved. A thin coating layer was observed in SEM analysis of the reduced graphene oxide (RGO) and GO coated fabrics. In the EDS analysis, increase in the amount of C and the decrease in the amount of O were determined after the reduction process. The most striking feature of graphene oxide was applied to all fabrics with a 4-probe measuring device and the best result was observed in the polyester fabric which was coated with Na₂S₂O₄ in 10 layer 5 minutes with Layer-by-Layer coating method with 1.47 × 1̄0 ³ S/cm².
{"title":"NANOCOATING OF POLYESTER FABRIC WITH GRAPHENE OXIDE","authors":"Beyza Doğan, Ş. Uğur, Banu Esencan Turkaslan","doi":"10.35530/tt.2019.17","DOIUrl":"https://doi.org/10.35530/tt.2019.17","url":null,"abstract":"GO is easily dispersed in solvents, dielectric property, transparency, electronic features can \u0000be adjusted due to the superior mechanical properties and areas of use are expanding day by day. In \u0000this study, graphene oxide was obtained from graphite by using modified Hummers method and then \u0000applied to polyester fabric surface according to multilayer coating method. Contrary to the traditional \u0000Hummers method in the literature, this study was carried out without the use of NaNO₃ in order to be \u0000environmentally friendly. Based on the Layer-by-Layer coating method, GO based nano films have \u0000been applied to the polyester fabric surface. After obtaining the GO based nanocomposite polyester \u0000fabrics, it was treated with Na₂S₂O₄ and NaBH₄ in order to obtain RGO structure and GO reduction \u0000was achieved. A thin coating layer was observed in SEM analysis of the reduced graphene oxide \u0000(RGO) and GO coated fabrics. In the EDS analysis, increase in the amount of C and the decrease in \u0000the amount of O were determined after the reduction process. The most striking feature of graphene \u0000oxide was applied to all fabrics with a 4-probe measuring device and the best result was observed in \u0000the polyester fabric which was coated with Na₂S₂O₄ in 10 layer 5 minutes with Layer-by-Layer coating \u0000method with 1.47 × 1̄0 ³ S/cm².","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88324588","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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