In this study, it is aimed to produce and characterize antibacterial polyurethane (PU)/Zinc oxide (ZnO) nanofibers by electrospinning method. Firstly, polymer solutions were prepared at various ZnO concentrations such as 0, 0.2, 0.4, 0.6, 0.8, 1. Then solution properties (conductivity, viscosity, surface tension) were determined and analysed the effects of ZnO concentration on the solution properties. PU/ZnO nanofibers produced via electrospinning under the optimum process parameters (voltage, distance between electrodes, feed rate and atmospheric conditions). Finally, the nanofibers were characterized in terms of fibre morphology, thermal stability, permeability and antibacterial activity using SEM-EDS, DSC-TGA, water vapour permeability and disk diffusion methods. According to the solution results; it was observed that conductivity and surface tension decrease significantly with ZnO addition. On the other hand, solution viscosity increases as the ZnO concentration increases. From the SEM images, it has been seen clearly that average fibre diameter increases with ZnO concentration and incorporation of ZnO particles to the fibre structure was verified by SEM-EDS. According to the thermal analyse result, nanofibers begin to degrade between 271.94 ºC and 298.73 ºC. In addition, water vapour permeability increases as the ZnO concentration increase. Lastly antibacterial activity against gram negative (E.coli) and gram positive (S. aureus) was determined with specific zone diameter.
{"title":"ELECTROSPINNING OF ANTIBACTERIAL POLYURETHANE/ZnO\u0000NANOFIBERS","authors":"İ.Y. Mol, F. C. Çallıoğlu","doi":"10.35530/tt.2021.29","DOIUrl":"https://doi.org/10.35530/tt.2021.29","url":null,"abstract":"In this study, it is aimed to produce and characterize antibacterial polyurethane (PU)/Zinc oxide\u0000(ZnO) nanofibers by electrospinning method. Firstly, polymer solutions were prepared at various ZnO\u0000concentrations such as 0, 0.2, 0.4, 0.6, 0.8, 1. Then solution properties (conductivity, viscosity, surface\u0000tension) were determined and analysed the effects of ZnO concentration on the solution properties. PU/ZnO\u0000nanofibers produced via electrospinning under the optimum process parameters (voltage, distance between\u0000electrodes, feed rate and atmospheric conditions). Finally, the nanofibers were characterized in terms of\u0000fibre morphology, thermal stability, permeability and antibacterial activity using SEM-EDS, DSC-TGA,\u0000water vapour permeability and disk diffusion methods. According to the solution results; it was observed\u0000that conductivity and surface tension decrease significantly with ZnO addition. On the other hand, solution\u0000viscosity increases as the ZnO concentration increases. From the SEM images, it has been seen clearly that\u0000average fibre diameter increases with ZnO concentration and incorporation of ZnO particles to the fibre\u0000structure was verified by SEM-EDS. According to the thermal analyse result, nanofibers begin to degrade\u0000between 271.94 ºC and 298.73 ºC. In addition, water vapour permeability increases as the ZnO\u0000concentration increase. Lastly antibacterial activity against gram negative (E.coli) and gram positive (S.\u0000aureus) was determined with specific zone diameter.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74773546","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}
Use of synthetic dyes for dyeing of textile fabrics is most problematic environmental concerned for textile industry. The demand of natural colourants for the dyeing of textile fabrics has been increasing. Thus, sustainable novel technologies for textile dyeing are needed that utilize improved colour strength and enhanced performance characteristics of the fabric. This study attempts to highlight the possibility of using cochineal natural dye in the printing of polyester fabrics after surface modification by O2/Ar plasma treatment. The colour strength, air permeability, crease recovery angle of printed fabrics, colour fastness to rubbing, washing and light, were also studied. The surfaces of untreated and plasma-treated polyester fabrics were analysed by SEM to compare the morphological changes. Surface roughness and cracks were indicated after the plasma pretreatment. The results indicated that plasma treatment could improve the printability of polyester fabric compared with untreated samples, with enhanced the adhesion and penetration of printing paste to the surface. The air permeability of printed fabrics has decreased, while the angle of crease recovery has increased. The fastness properties of printed samples were found suitable to very good.
{"title":"THE EFFECT OF PLASMA TREATMENT ON THE PRINTABILITY\u0000OF POLYESTER FABRIC USING COCHINEAL NATURAL DYE","authors":"M. Khajeh Mehrizi, A. Haji, Z. Shahi, M. Golshan","doi":"10.35530/tt.2021.49","DOIUrl":"https://doi.org/10.35530/tt.2021.49","url":null,"abstract":"Use of synthetic dyes for dyeing of textile fabrics is most problematic environmental concerned for textile industry. The demand of natural colourants for the dyeing of textile fabrics has been increasing. Thus, sustainable novel technologies for textile dyeing are needed that utilize improved colour strength and enhanced performance characteristics of the fabric. This study attempts to highlight the possibility of using cochineal natural dye in the printing of polyester fabrics after surface modification by O2/Ar plasma treatment. The colour strength, air permeability, crease recovery angle of printed fabrics, colour fastness to rubbing, washing and light, were also studied. The surfaces of untreated and plasma-treated polyester fabrics were analysed by SEM to compare the morphological changes. Surface roughness and cracks were indicated after the plasma pretreatment.\u0000The results indicated that plasma treatment could improve the printability of polyester fabric compared with untreated samples, with enhanced the adhesion and penetration of printing paste to the surface.\u0000The air permeability of printed fabrics has decreased, while the angle of crease recovery has increased. The fastness properties of printed samples were found suitable to very good.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"135 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78605555","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}
I. Radulescu, R. Aileni, A. Săliștean, S. Olaru, M. Grosu, R. Scarlat, I. Sandulache
Textile technologies are rapidly developing and coping with the modern software applications of etextile design means a substantial benefit for textile creatives. The target group of textile creatives is considered to include both young professionals in the textile industry as well as students of Higher Education in technical fields. A partnership of six prestigious research and educational providers in Europe, coordinated by INCDTP – Bucharest have joined their expertise to offer educational modules related to this need, within the Erasmus+ project “OptimTex- Software tools for textiles creatives”. The project has duration of two years (2020-2022) and has already implemented the educational modules in e-learning format on the project’s website (www.optimtex.eu). The five educational modules follow the main textile technologies and describe in a Problem-Based-Learning (PBL) approach software applications for: weaving, knitting, virtual prototyping of clothing, embroidery of e-textiles (electronic textiles) and experimental design. The PBL approach consists in learning by examples, followed by the theory, the corresponding software applications and a quiz for selfassessment. The e-learning instrument was programmed in HTML5 and JavaScript and offers quick access the educational modules. INCDTP has conceived the fifth module on experimental design, by tackling plasma treatments of textiles for various functionalities: hydrophobic, hydrophilic and electrical conductivity. Full factorial, Central Composite Design and Fractional factorial experimental design plans were described. This topic is of interest for the envisaged target group, for it represents alternative and useful knowledge to the official curricula of Higher Education engineering studies. Intensive Study Programs and Multiplier events will be organized in the second project’s year for students of Higher Education and textile professionals.
{"title":"TRAINING OF TEXTILE CREATIVES IN THE FIELD OF ETEXTILES\u0000DESIGN SOFTWARE","authors":"I. Radulescu, R. Aileni, A. Săliștean, S. Olaru, M. Grosu, R. Scarlat, I. Sandulache","doi":"10.35530/tt.2021.40","DOIUrl":"https://doi.org/10.35530/tt.2021.40","url":null,"abstract":"Textile technologies are rapidly developing and coping with the modern software applications of etextile\u0000design means a substantial benefit for textile creatives. The target group of textile creatives is considered\u0000to include both young professionals in the textile industry as well as students of Higher Education in technical\u0000fields. A partnership of six prestigious research and educational providers in Europe, coordinated by INCDTP –\u0000Bucharest have joined their expertise to offer educational modules related to this need, within the Erasmus+\u0000project “OptimTex- Software tools for textiles creatives”. The project has duration of two years (2020-2022) and\u0000has already implemented the educational modules in e-learning format on the project’s website\u0000(www.optimtex.eu). The five educational modules follow the main textile technologies and describe in a\u0000Problem-Based-Learning (PBL) approach software applications for: weaving, knitting, virtual prototyping of\u0000clothing, embroidery of e-textiles (electronic textiles) and experimental design. The PBL approach consists in\u0000learning by examples, followed by the theory, the corresponding software applications and a quiz for selfassessment.\u0000The e-learning instrument was programmed in HTML5 and JavaScript and offers quick access the\u0000educational modules. INCDTP has conceived the fifth module on experimental design, by tackling plasma\u0000treatments of textiles for various functionalities: hydrophobic, hydrophilic and electrical conductivity. Full\u0000factorial, Central Composite Design and Fractional factorial experimental design plans were described. This\u0000topic is of interest for the envisaged target group, for it represents alternative and useful knowledge to the\u0000official curricula of Higher Education engineering studies. Intensive Study Programs and Multiplier events will\u0000be organized in the second project’s year for students of Higher Education and textile professionals.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78424495","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}
S. Ferreira, P. Silva, J. Bessa, F. Cunha, C. Castro, A. Aguilar, R. Fangueiro
The emergence of increasingly contagious diseases in these days, such as COVID-19, increased the need to develop more effective personal protection equipment’s (PPEs). Therefore, the goal is to create textile materials capable to act against bacteria, virus or fungi, with a long-lasting performance but, at the same time, that could be comfortable and safe for their users. In this sense, based on the advantages of nanotechnology, the aim of this work was to functionalize organic raw cotton fibers with zinc nanoparticles (NPs) and previously tretated with NaOH, for the further production of multifunctional yarns with antimicrobial activity. Thereby, the fibers functionalization was tested using 1% w/w and 2% w/w of zinc NPs aqueous dispersion, being subsequently evaluated their distribution, chemical nature and zinc concentration by SEM/EDS and Atomic Absorption Spectroscopy, respectively. Subsequently, using the functionalized fibers, a yarn was spinned and their structural, mechanical and moisture management properties determined. Also, to assess the influence of the produced yarn on the properties of a fibrous structure, a single jersey knit sample was further produced and evaluated regarding their mechanical, moisture management and antibacterial properties. Based on the methodology used it was possible to develop a yarn with a tenacity 24% higher and a knit sample 28% more breathable and with a water evaporating ratio 37% higher than the one without any treatment or functionalization, but mainly with a strong antibacterial activity against both gram-negative (Klebsiella Pneumoniae) and gram-positive (Staphylococcus Aureus) bacteria, presenting therefore potential to be used in the production of effective PPEs.
{"title":"DEVELOPMENT OF MULTIFUNCTIONAL YARN FROM THE\u0000FUNCTIONALIZATION OF ORGANIC RAW COTTON FIBERS\u0000WITH ZINC NANOPARTICLES","authors":"S. Ferreira, P. Silva, J. Bessa, F. Cunha, C. Castro, A. Aguilar, R. Fangueiro","doi":"10.35530/tt.2021.20","DOIUrl":"https://doi.org/10.35530/tt.2021.20","url":null,"abstract":"The emergence of increasingly contagious diseases in these days, such as COVID-19, increased the need to develop more effective personal protection equipment’s (PPEs). Therefore, the goal is to create textile materials capable to act against bacteria, virus or fungi, with a long-lasting performance but, at the same time, that could be comfortable and safe for their users. In this sense, based on the advantages of nanotechnology, the aim of this work was to functionalize organic raw cotton fibers with zinc nanoparticles\u0000(NPs) and previously tretated with NaOH, for the further production of multifunctional yarns with antimicrobial activity. Thereby, the fibers functionalization was tested using 1% w/w and 2% w/w of zinc NPs aqueous dispersion, being subsequently evaluated their distribution, chemical nature and zinc concentration by SEM/EDS and Atomic Absorption Spectroscopy, respectively. Subsequently, using the functionalized fibers, a yarn was spinned and their structural, mechanical and moisture management properties determined. Also, to assess the influence of the produced yarn on the properties of a fibrous structure, a single jersey knit sample was further produced and evaluated regarding their mechanical, moisture management and antibacterial properties. Based on the methodology used it was possible to develop a yarn with a tenacity 24% higher and a knit sample 28% more breathable and with a water evaporating ratio 37% higher than the one without any\u0000treatment or functionalization, but mainly with a strong antibacterial activity against both gram-negative (Klebsiella Pneumoniae) and gram-positive (Staphylococcus Aureus) bacteria, presenting therefore potential to be used in the production of effective PPEs.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82391878","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 recent years, the 3D design software has been mostly used to improve the garment design process by generating virtual 3D garment prototypes. Many researchers have been working on the development of 3D virtual garment prototypes using 3D body models and involving the 3D human body scanning in different postures. The focus of research in this field today relies on generating a kinematic 3D body model for the purposes of developing the individualized garments, the exploration of which is presented in this paper. The discussed area is also implemented in the Erasmus+ project OptimTex - Software tools for textile creatives, which is fully aligned with the new trends propelled by the digitization of the whole textile sector. The Slovenian module focuses on presenting the needs of digitization for the development of individualized garments by using different software tools: 3D Sense, PotPlayer, Meshroom, MeshLab, Blender and OptiTex. The module provides four examples: 3D human body scanning using 3D photogrammetry, 3D human body modelling and reconstruction, construction of a kinematic 3D body model and 3D virtual prototyping of individualized smart garments, and thus displays the entire process for the needs of 3D virtual prototyping of individualized garments. In the OptimTex project, the 3D software Blender was used to demonstrate and teach students how to construct the "armature" of the human body as an object for rigging or the virtual skeleton for a 3D kinematic body model, using the knee as an example.
{"title":"DESIGN OF GARMENTS USING ADAPTABLE DIGITAL BODY\u0000MODELS","authors":"A. Rudolf, Z. Stjepanovic, A. Cupar","doi":"10.35530/tt.2021.09","DOIUrl":"https://doi.org/10.35530/tt.2021.09","url":null,"abstract":"In recent years, the 3D design software has been mostly used to improve the garment design process by generating virtual 3D garment prototypes. Many researchers have been working on the development of 3D virtual garment prototypes using 3D body models and involving the 3D human body scanning in different postures. The focus of research in this field today relies on generating a kinematic 3D body model for the purposes of developing the individualized garments, the exploration of which is presented in this paper. The\u0000discussed area is also implemented in the Erasmus+ project OptimTex - Software tools for textile creatives, which is fully aligned with the new trends propelled by the digitization of the whole textile sector. The Slovenian module focuses on presenting the needs of digitization for the development of individualized garments by using different software tools: 3D Sense, PotPlayer, Meshroom, MeshLab, Blender and OptiTex. The module provides four examples: 3D human body scanning using 3D photogrammetry, 3D human body modelling and reconstruction, construction of a kinematic 3D body model and 3D virtual prototyping of individualized smart garments, and thus displays the entire process for the needs of 3D virtual prototyping of individualized garments. In the OptimTex project, the 3D software Blender was used to demonstrate and teach students how to\u0000construct the \"armature\" of the human body as an object for rigging or the virtual skeleton for a 3D kinematic body model, using the knee as an example.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80188822","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. Haji, M. Khajeh Mehrizi, M. Ali Tavanai, M. Gohari
Water-repellent textiles are usually prepared by application of hydrophobic polymers such as fluorocarbons on fabrics using padding or spraying methods followed by drying and curing steps. These procedures impart hydrophobicity to the fabric, but harm the physical and handle properties of the fabric. In this study, low-pressure plasma was employed for the polymerization of 1H,1H,2H,2H-Perfluorooctyl acrylate on PET/Wool fabric for obtaining water-repellent properties with minimum effect on other desirable properties. To compare the results with the conventional industrial processes, a sample was treated with a commercial water-repellent agent using pad-dry-cure method. The water contact angle, bending length, tensile strength, air permeability, and surface morphology of the samples were compared. The plasma-treated sample showed similar water contact angle and higher fastness properties compared with the sample prepared by the conventional method. The tensile strength of the samples was similar, while the air permeability of the plasmatreated sample was higher and the coating was more uniform compared with the sample prepared by the paddry- cure method.
{"title":"WATER REPELLENT BREATHABLE PET/WOOL FABRIC VIA\u0000PLASMA POLYMERISATION TECHNOLOGY","authors":"A. Haji, M. Khajeh Mehrizi, M. Ali Tavanai, M. Gohari","doi":"10.35530/tt.2021.50","DOIUrl":"https://doi.org/10.35530/tt.2021.50","url":null,"abstract":"Water-repellent textiles are usually prepared by application of hydrophobic polymers such as\u0000fluorocarbons on fabrics using padding or spraying methods followed by drying and curing steps. These\u0000procedures impart hydrophobicity to the fabric, but harm the physical and handle properties of the fabric. In\u0000this study, low-pressure plasma was employed for the polymerization of 1H,1H,2H,2H-Perfluorooctyl acrylate\u0000on PET/Wool fabric for obtaining water-repellent properties with minimum effect on other desirable properties.\u0000To compare the results with the conventional industrial processes, a sample was treated with a commercial\u0000water-repellent agent using pad-dry-cure method. The water contact angle, bending length, tensile strength, air\u0000permeability, and surface morphology of the samples were compared. The plasma-treated sample showed\u0000similar water contact angle and higher fastness properties compared with the sample prepared by the\u0000conventional method. The tensile strength of the samples was similar, while the air permeability of the plasmatreated\u0000sample was higher and the coating was more uniform compared with the sample prepared by the paddry-\u0000cure method.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91145106","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. Mostafa, W. Hashima, S. El-Gholmy, A. Al-Oufy, M. Hassan
The factors of increasing productivity, reducing the cost and the quality improvement are the most important research concerns in weaving machinery. Increasing the effectiveness and productivity of production were achieved by increasing the operating time and efficiency of weaving looms. Thus, the manufacturers of weaving equipment attempt to minimize factors that limit production speed and production conditions. Heald frame is one of the known parts of the weaving machine that causes vibrations and noise which are important factors that influence high-speed development of looms. In this research work, study of mechanical factors (stresses and vibration) has been investigated for heald shaft. Finite element model of the heald frame was constructed to simulate different type of material. Then some important natural frequencies and vibration modes are calculated and the results. Results show a major improvement with the usage of these different material. As well as the failure of heald shaft is mainly due to friction and vibration and not due to the stresses or weight.
{"title":"OPTIMIZATION OF SOME WEAVING MACHINE PARTS DESIGN.\u0000THEORETICAL APPROACH","authors":"A. Mostafa, W. Hashima, S. El-Gholmy, A. Al-Oufy, M. Hassan","doi":"10.35530/tt.2021.33","DOIUrl":"https://doi.org/10.35530/tt.2021.33","url":null,"abstract":"The factors of increasing productivity, reducing the cost and the quality improvement are the most\u0000important research concerns in weaving machinery. Increasing the effectiveness and productivity of production\u0000were achieved by increasing the operating time and efficiency of weaving looms. Thus, the manufacturers of\u0000weaving equipment attempt to minimize factors that limit production speed and production conditions. Heald\u0000frame is one of the known parts of the weaving machine that causes vibrations and noise which are important\u0000factors that influence high-speed development of looms. In this research work, study of mechanical factors\u0000(stresses and vibration) has been investigated for heald shaft. Finite element model of the heald frame was\u0000constructed to simulate different type of material. Then some important natural frequencies and vibration modes\u0000are calculated and the results. Results show a major improvement with the usage of these different material. As\u0000well as the failure of heald shaft is mainly due to friction and vibration and not due to the stresses or weight.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"292 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77751793","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 study aimed at creating different woven textile fabrics with potential applications related to healthcare and hygiene by using textile yarns obtained from diverse fibre blends and by varying the structural parameters of the fabrics. Four different weave patterns were used to create the fabrics: warp rib, 2/2 twill, 2/2-pointed twill and hopsack. Cotton fibres were mostly used, but fibres made from regenerated cellulose with extra antibacterial properties (silver ions) and from ultra-high tenacity polyethylene (UHMWPE) were also used in different proportions. The choice and combination of these types of yarns, along with the rational design for making the fabrics contribute to supporting the sustainability of the textile field, improving the quality of life of people, especially those with special needs (the elderly, people with disabilities, or people with various diseases that limit their free movement) and also ensuring a longer usage time and manifestation of functionalities. A comparative analysis regarding the influence of structural parameters, but also the influence of fibre types on the physico-mechanical performance of the created fabrics was made.
{"title":"ANALYSIS OF THE PHYSICO-MECHANICAL PROPERTIES OF\u0000DIFFERENT WOVEN STRUCTURES WITH POTENTIAL\u0000APPLICATIONS IN THE HEALTHCARE AND HYGIENE SECTO","authors":"C. Stroe, T. Sarbu","doi":"10.35530/tt.2021.37","DOIUrl":"https://doi.org/10.35530/tt.2021.37","url":null,"abstract":"This study aimed at creating different woven textile fabrics with potential applications related to\u0000healthcare and hygiene by using textile yarns obtained from diverse fibre blends and by varying the\u0000structural parameters of the fabrics. Four different weave patterns were used to create the fabrics: warp\u0000rib, 2/2 twill, 2/2-pointed twill and hopsack. Cotton fibres were mostly used, but fibres made from\u0000regenerated cellulose with extra antibacterial properties (silver ions) and from ultra-high tenacity\u0000polyethylene (UHMWPE) were also used in different proportions. The choice and combination of these types\u0000of yarns, along with the rational design for making the fabrics contribute to supporting the sustainability of the\u0000textile field, improving the quality of life of people, especially those with special needs (the elderly, people with\u0000disabilities, or people with various diseases that limit their free movement) and also ensuring a longer usage\u0000time and manifestation of functionalities. A comparative analysis regarding the influence of structural\u0000parameters, but also the influence of fibre types on the physico-mechanical performance of the created\u0000fabrics was made.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91459535","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 study aimed to achieve Polyvinylpyrrolidone (PVP) nanofiber production including paracetamol (PCT) by oil-in-water emulsion electrospinning. At first, emulsions were prepared at 14 wt % PVP with various PCT concentrations (0, 0.1, 0.3, 0.5, 0.7, 0.9 wt %). Then, solution properties such as viscosity, conductivity, and surface tension were determined. The production of nanofiber samples was carried out by emulsion electrospinning under the optimum process parameters (voltage, distance between electrodes, feed rate, and atmospheric conditions). Finally, the morphological and structural characterization of the nanofiber surface was carried out with SEM and FT-IR. According to the results of emulsion properties, although the change is not remarkable, it tends to increase the viscosity with an increase in PCT concentration. On the other hand, it was observed that surface tension did not change significantly with PCT concentration increasement and while the conductivity of emulsions decreased slightly. When the fibre structure was investigated, average fibre diameter and fibre diameter uniformity were not affected prominently by PCT concentration. From the SEM images, it is possible to say that generally fine, uniform and bead-free drug-loaded nanofibers were obtained. The finest (326 nm) and most uniform (1.03) nanofibers were achieved from the sample N4 which included 0.5 wt % PCT. Also, the FT-IR results verified that PVP and PCT exist in the nanofiber structure.
{"title":"EMULSION ELECTROSPINNING OF POLYVINYLPYRROLIDONE\u0000(PVP)/PARACETAMOL NANOFIBERS","authors":"M. Geysoğlu, H. Güler, F. C. Çallıoğlu, İ.Y. Mol","doi":"10.35530/tt.2021.28","DOIUrl":"https://doi.org/10.35530/tt.2021.28","url":null,"abstract":"This study aimed to achieve Polyvinylpyrrolidone (PVP) nanofiber production including paracetamol\u0000(PCT) by oil-in-water emulsion electrospinning. At first, emulsions were prepared at 14 wt % PVP with various\u0000PCT concentrations (0, 0.1, 0.3, 0.5, 0.7, 0.9 wt %). Then, solution properties such as viscosity, conductivity,\u0000and surface tension were determined. The production of nanofiber samples was carried out by emulsion\u0000electrospinning under the optimum process parameters (voltage, distance between electrodes, feed rate, and\u0000atmospheric conditions). Finally, the morphological and structural characterization of the nanofiber surface\u0000was carried out with SEM and FT-IR. According to the results of emulsion properties, although the change is not\u0000remarkable, it tends to increase the viscosity with an increase in PCT concentration. On the other hand, it was\u0000observed that surface tension did not change significantly with PCT concentration increasement and while the\u0000conductivity of emulsions decreased slightly. When the fibre structure was investigated, average fibre diameter\u0000and fibre diameter uniformity were not affected prominently by PCT concentration. From the SEM images, it is\u0000possible to say that generally fine, uniform and bead-free drug-loaded nanofibers were obtained. The finest (326\u0000nm) and most uniform (1.03) nanofibers were achieved from the sample N4 which included 0.5 wt % PCT. Also,\u0000the FT-IR results verified that PVP and PCT exist in the nanofiber structure.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83663457","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}
C. Mihai, A. Ene, R. Hertzog, D. Popescu, A. Vladu
The new generations of wound dressings aim to create an optimal environment that allows epithelial cells to move easily in order to support regeneration. Such optimal conditions include a humid environment around the wound bed, efficient oxygen circulation to help regenerate cells and tissues, and low bacterial contamination. Composite matrices have several layers and can be used as primary or secondary dressings. Most composite dressings have three layers, respectively a semi-adherent or non-adherent layer, an absorbent layer, and a bacterial barrier layer. A method to obtaining these materials, which can be assimilated to layerby- layer deposition, or which can be operated in this regime, is represented by electrospinning. However, the deposition technique by electrospinning on textile surfaces (fabrics or nonwovens) raises some problems related to the electrostatic behaviour of textile fibres with dielectric properties. In this case, the characteristics of the jet are affected directly proportional with the thickness of the textile material, resulting in defects of nano- or micro-fibrillar deposition, such as unevenness and/or sputter (formation of drops, which are deposited in mixture with electro spun fibres). The article presents a mathematical model that predicts the diameter of the fibres in the composition of the absorbent layer of the multilayer matrix structure for the treatment of burns or gunshot wounds, taking into account the nonlinear relationships between the parameters explained above and specific theories of electrodynamics for thin profiles (for instance, those used in aeronautics) for the prediction of the behaviour of the electrospinning jet.
{"title":"PREDICTIVE MATEHMATICAL MODEL FOR ABSORBANT\u0000SUBSTRATE ACHIEVEMENT, THROUGH ELECTROSPINNING\u0000PROCESS","authors":"C. Mihai, A. Ene, R. Hertzog, D. Popescu, A. Vladu","doi":"10.35530/tt.2021.59","DOIUrl":"https://doi.org/10.35530/tt.2021.59","url":null,"abstract":"The new generations of wound dressings aim to create an optimal environment that allows epithelial\u0000cells to move easily in order to support regeneration. Such optimal conditions include a humid environment\u0000around the wound bed, efficient oxygen circulation to help regenerate cells and tissues, and low bacterial\u0000contamination. Composite matrices have several layers and can be used as primary or secondary dressings.\u0000Most composite dressings have three layers, respectively a semi-adherent or non-adherent layer, an absorbent\u0000layer, and a bacterial barrier layer. A method to obtaining these materials, which can be assimilated to layerby-\u0000layer deposition, or which can be operated in this regime, is represented by electrospinning. However, the\u0000deposition technique by electrospinning on textile surfaces (fabrics or nonwovens) raises some problems\u0000related to the electrostatic behaviour of textile fibres with dielectric properties. In this case, the characteristics\u0000of the jet are affected directly proportional with the thickness of the textile material, resulting in defects of\u0000nano- or micro-fibrillar deposition, such as unevenness and/or sputter (formation of drops, which are\u0000deposited in mixture with electro spun fibres). The article presents a mathematical model that predicts the\u0000diameter of the fibres in the composition of the absorbent layer of the multilayer matrix structure for the\u0000treatment of burns or gunshot wounds, taking into account the nonlinear relationships between the parameters\u0000explained above and specific theories of electrodynamics for thin profiles (for instance, those used in\u0000aeronautics) for the prediction of the behaviour of the electrospinning jet.","PeriodicalId":22214,"journal":{"name":"TEXTEH Proceedings","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86729899","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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