To make full use of waste feather resources, waste feather fiber/polybutanediol succinate gradient sound-absorbing composites were prepared by a hot-pressing process with waste feather fiber as a reinforcing material and polybutanediol succinate as a matrix material. It can be applied to construction and other fields. The influence of gradient waste feather fiber mass fraction, gradient material density, and gradient material thickness on the sound-absorbing performance was studied, and the sound-absorbing mechanism of the material was analyzed. To determine the average sound-absorbing coefficient, maximum absorbing coefficient, and noise reduction coefficient as the evaluation index, the gradient sound-absorbing composites with waste feathers were compared with market common porous sound-absorbing materials with polyester fiber and wool fiber. The maximum sound-absorbing coefficient of the gradient sound-absorbing composites with waste feathers was 0.860; the average sound-absorbing coefficient was 0.408; the noise reduction coefficient was 0.393; and the noise reduction grade was IV. The sound-absorbing band was wide, and gradient sound-absorbing composites with waste feathers can be applied over a wide range.
为充分利用废弃羽毛资源，以废弃羽毛纤维为增强材料，聚丁二醇琥珀酸酯为基体材料，采用热压工艺制备了废弃羽毛纤维/聚丁二醇琥珀酸酯梯度吸声复合材料。该材料可应用于建筑等领域。研究了梯度废羽毛纤维质量分数、梯度材料密度和梯度材料厚度对吸声性能的影响，并分析了材料的吸声机理。以平均吸声系数、最大吸声系数和降噪系数为评价指标，将废羽毛梯度吸声复合材料与市场上常见的聚酯纤维和羊毛纤维多孔吸声材料进行了比较。废羽毛梯度吸声复合材料的最大吸声系数为 0.860，平均吸声系数为 0.408，降噪系数为 0.393，降噪等级为 IV 级。吸声频带较宽，废羽毛梯度吸声复合材料的应用范围较广。
{"title":"Preparation and Properties of Gradient Sound-Absorbing Composites with Waste Feathers","authors":"Lihua Lyu, Jiaxin Pan, Jing Lu, Xing-lin Zhou, Yuan Gao","doi":"10.1177/24723444231215447","DOIUrl":"https://doi.org/10.1177/24723444231215447","url":null,"abstract":"To make full use of waste feather resources, waste feather fiber/polybutanediol succinate gradient sound-absorbing composites were prepared by a hot-pressing process with waste feather fiber as a reinforcing material and polybutanediol succinate as a matrix material. It can be applied to construction and other fields. The influence of gradient waste feather fiber mass fraction, gradient material density, and gradient material thickness on the sound-absorbing performance was studied, and the sound-absorbing mechanism of the material was analyzed. To determine the average sound-absorbing coefficient, maximum absorbing coefficient, and noise reduction coefficient as the evaluation index, the gradient sound-absorbing composites with waste feathers were compared with market common porous sound-absorbing materials with polyester fiber and wool fiber. The maximum sound-absorbing coefficient of the gradient sound-absorbing composites with waste feathers was 0.860; the average sound-absorbing coefficient was 0.408; the noise reduction coefficient was 0.393; and the noise reduction grade was IV. The sound-absorbing band was wide, and gradient sound-absorbing composites with waste feathers can be applied over a wide range.","PeriodicalId":502144,"journal":{"name":"AATCC Journal of Research","volume":"46 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139823090","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 : 2024-01-02DOI: 10.1177/24723444231215444
Beletech Alemu Reta, K. M. Babu, Tamrat Tesfaye
Antimicrobial textiles with improved functionality have a wide range of applications, including health and hygiene products, particularly garments worn next to the skin, and a number of medical applications, including infection control and barrier materials. Furthermore, these textiles are used in household materials, air filters, food packaging, athletic wear, storage, ventilation, and water purification systems. Cotton-based materials are hygienic and are commonly used in non-implantable hygiene medical textile products such as lint, gauze, bandages, wound dressing, and sanitary napkins. In terms of absorbency, comfort, and durability, non-implantable cotton fabric materials outperform standard clothing materials. Several studies show that depending on the type of components present in the plant extract, several plant extracts can be effective against both Gram-positive and Gram-negative bacteria. As a result, research into eco-friendly antimicrobial agents and their application on various textile products is gaining worldwide attention. Plants such as neem, eucalyptus, aloe vera, and clove contain natural antimicrobial compounds. Extracts of neem, eucalyptus, aloe vera, and clove are used in textile finishing. These bioactive substances could be used to impart antimicrobial properties to textiles for the development of health care and hygiene products. This review focuses on research into various natural antimicrobial agents derived from plant extracts and their applications as textile finishing agents for healthcare and hygiene applications.
{"title":"Studies on Healthcare and Hygiene Textile Materials Treated With Natural Antimicrobial Bioactive Agents Derived From Plant Extracts","authors":"Beletech Alemu Reta, K. M. Babu, Tamrat Tesfaye","doi":"10.1177/24723444231215444","DOIUrl":"https://doi.org/10.1177/24723444231215444","url":null,"abstract":"Antimicrobial textiles with improved functionality have a wide range of applications, including health and hygiene products, particularly garments worn next to the skin, and a number of medical applications, including infection control and barrier materials. Furthermore, these textiles are used in household materials, air filters, food packaging, athletic wear, storage, ventilation, and water purification systems. Cotton-based materials are hygienic and are commonly used in non-implantable hygiene medical textile products such as lint, gauze, bandages, wound dressing, and sanitary napkins. In terms of absorbency, comfort, and durability, non-implantable cotton fabric materials outperform standard clothing materials. Several studies show that depending on the type of components present in the plant extract, several plant extracts can be effective against both Gram-positive and Gram-negative bacteria. As a result, research into eco-friendly antimicrobial agents and their application on various textile products is gaining worldwide attention. Plants such as neem, eucalyptus, aloe vera, and clove contain natural antimicrobial compounds. Extracts of neem, eucalyptus, aloe vera, and clove are used in textile finishing. These bioactive substances could be used to impart antimicrobial properties to textiles for the development of health care and hygiene products. This review focuses on research into various natural antimicrobial agents derived from plant extracts and their applications as textile finishing agents for healthcare and hygiene applications.","PeriodicalId":502144,"journal":{"name":"AATCC Journal of Research","volume":"103 48","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139391335","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 : 2023-12-25DOI: 10.1177/24723444231212954
Xin Li, Lisha Zhu, Xuemei Ding, Xiongying Wu, Laili Wang
Dyes play an important role in textile production, but their contribution to air pollution and harming human health have raised concerns and remain an international problem. The key to overcoming this challenge is to assess how much greenhouse gases are being generated and the hotspots which guide decision-making process toward more sustainable options. This article established a carbon footprint calculation method for disperse dyes. First, the system boundary description and the functional unit were discussed. Second, the carbon footprint inventory analysis was determined. What’s more, the calculation method, allocation method and emission factors were proposed. It was intended to be practical and effective based on three typical disperse dyes in China. The results showed that the carbon footprints of Disperse Blue 79, Disperse Red 167, and Disperse Orange 61 corresponded to 8.28 t CO2 eq/t, 8.07 t CO2 eq/t, and 7.48 t CO2 eq/t, respectively. For the three disperse dyes, the carbon emissions of dispersing agent melamine-formaldehyde resin and liquid ammonia consumption were the dominant emission sources. The steam and electricity were the two major sources of carbon emissions caused by energy usage. The homogenization and the wastewater treatment process were the two largest emission emitters. The sensitivity analysis showed that the total product carbon footprint was mostly sensitive to dispersing agent melamine-formaldehyde resin changes, followed by steam, liquid ammonia, and electricity. The results show that disperse dye production have great potential for improvement. The reduction options for the emissions of the disperse dyes production can be concluded by the optimization of the production process and technology for dispersing agent melamine-formaldehyde resin, liquid ammonia, electricity, and steam. Through the calculation, the influencing factors for the carbon footprint can be analyzed and highlighted. The method provides a comprehensive understanding of environmental impacts with dyes, driving the adoption of sustainable dyeing practices.
{"title":"Climate Change and the Textile Industry: The Carbon Footprint of Dyes","authors":"Xin Li, Lisha Zhu, Xuemei Ding, Xiongying Wu, Laili Wang","doi":"10.1177/24723444231212954","DOIUrl":"https://doi.org/10.1177/24723444231212954","url":null,"abstract":"Dyes play an important role in textile production, but their contribution to air pollution and harming human health have raised concerns and remain an international problem. The key to overcoming this challenge is to assess how much greenhouse gases are being generated and the hotspots which guide decision-making process toward more sustainable options. This article established a carbon footprint calculation method for disperse dyes. First, the system boundary description and the functional unit were discussed. Second, the carbon footprint inventory analysis was determined. What’s more, the calculation method, allocation method and emission factors were proposed. It was intended to be practical and effective based on three typical disperse dyes in China. The results showed that the carbon footprints of Disperse Blue 79, Disperse Red 167, and Disperse Orange 61 corresponded to 8.28 t CO2 eq/t, 8.07 t CO2 eq/t, and 7.48 t CO2 eq/t, respectively. For the three disperse dyes, the carbon emissions of dispersing agent melamine-formaldehyde resin and liquid ammonia consumption were the dominant emission sources. The steam and electricity were the two major sources of carbon emissions caused by energy usage. The homogenization and the wastewater treatment process were the two largest emission emitters. The sensitivity analysis showed that the total product carbon footprint was mostly sensitive to dispersing agent melamine-formaldehyde resin changes, followed by steam, liquid ammonia, and electricity. The results show that disperse dye production have great potential for improvement. The reduction options for the emissions of the disperse dyes production can be concluded by the optimization of the production process and technology for dispersing agent melamine-formaldehyde resin, liquid ammonia, electricity, and steam. Through the calculation, the influencing factors for the carbon footprint can be analyzed and highlighted. The method provides a comprehensive understanding of environmental impacts with dyes, driving the adoption of sustainable dyeing practices.","PeriodicalId":502144,"journal":{"name":"AATCC Journal of Research","volume":"22 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139157482","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 : 2023-11-28DOI: 10.1177/24723444231201444
E. Lysenkov, O. V. Striutskyi
The aging processes and their influence on structure, thermophysical and antimicrobial properties of polymer nanocomposites based on segmented polyurethane and silver nanoparticles were studied. It was established that an increase in the intensity of intermolecular interactions of polyurethane occurred regardless of the concentration of silver in the silver nanoparticles due to a change in the packing of macromolecules. It was shown that in the process of aging of composites, the effective size of crystallites of polymer matrix decreases and varies in the range of 1.35–1.50 nm. The most pronounced effect of aging is manifested on the melting temperatures of the crystalline phase of polyurethane and the degree of crystallinity. It was found that polyurethane–silver nanoparticle composites exhibit a very high inhibitory capacity against Staphylococcus aureus, Escherichia coli, and Candida albicans. It is shown that aging processes do not affect the antimicrobial characteristics of the studied materials, which indicates their stability. Due to their unique characteristics, synthesized nanocomposite films can be promising for use as antimicrobial coatings in various applications.
{"title":"The Influence of Aging on the Structure and Properties of Composite Materials Based on Polyurethane and Silver Nanoparticles","authors":"E. Lysenkov, O. V. Striutskyi","doi":"10.1177/24723444231201444","DOIUrl":"https://doi.org/10.1177/24723444231201444","url":null,"abstract":"The aging processes and their influence on structure, thermophysical and antimicrobial properties of polymer nanocomposites based on segmented polyurethane and silver nanoparticles were studied. It was established that an increase in the intensity of intermolecular interactions of polyurethane occurred regardless of the concentration of silver in the silver nanoparticles due to a change in the packing of macromolecules. It was shown that in the process of aging of composites, the effective size of crystallites of polymer matrix decreases and varies in the range of 1.35–1.50 nm. The most pronounced effect of aging is manifested on the melting temperatures of the crystalline phase of polyurethane and the degree of crystallinity. It was found that polyurethane–silver nanoparticle composites exhibit a very high inhibitory capacity against Staphylococcus aureus, Escherichia coli, and Candida albicans. It is shown that aging processes do not affect the antimicrobial characteristics of the studied materials, which indicates their stability. Due to their unique characteristics, synthesized nanocomposite films can be promising for use as antimicrobial coatings in various applications.","PeriodicalId":502144,"journal":{"name":"AATCC Journal of Research","volume":"227 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139227126","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 : 2023-11-23DOI: 10.1177/24723444231212950
Elizabeth Easter, Susan Dabbain
The COVID-19 pandemic negatively impacted the health and safety of healthcare workers as the supply of personal protective equipment was severely limited at the pandemic’s beginning. Some healthcare facilities took the Centers for Disease Control and Prevention’s recommendations to shift from disposable personal protective equipment to reusable, as an option for extending the life of their personal protective equipment during the pandemic. This research investigated Level 2 isolation gowns to determine whether they met or exceeded the protection specifications of ANSI/AAMI PB70:2012 and the American Society for Testing and Materials: ASTM F3352-19 Standard Specification for Isolation Gowns Intended for Use in Healthcare Facilities. The overall findings show that commercially available reusable gowns initially met the ANSI/AAMI PB70:2012 and ASTM F3352 standards. Out of the six sample groups, gowns in one group failed the ANSI/AAMI PB70:2012 specifications before the end of their intended lifecycle. All gowns met the specifications for durability in ASTM F3352-19, but further research showed tear strength after laundering weakened substantially. The current standard for Level 2 isolation gowns is protecting the lives of healthcare workers. However, the specifications could be improved by ANSI/AAMI by evaluating the performance after laundering instead of as new. Durability specifications would be improved by increasing the requirements for reusable gowns.
{"title":"An Evaluation of the Barrier and Durability Performance of Reusable Level 2 Isolation Gowns Over Their Promoted Service Life","authors":"Elizabeth Easter, Susan Dabbain","doi":"10.1177/24723444231212950","DOIUrl":"https://doi.org/10.1177/24723444231212950","url":null,"abstract":"The COVID-19 pandemic negatively impacted the health and safety of healthcare workers as the supply of personal protective equipment was severely limited at the pandemic’s beginning. Some healthcare facilities took the Centers for Disease Control and Prevention’s recommendations to shift from disposable personal protective equipment to reusable, as an option for extending the life of their personal protective equipment during the pandemic. This research investigated Level 2 isolation gowns to determine whether they met or exceeded the protection specifications of ANSI/AAMI PB70:2012 and the American Society for Testing and Materials: ASTM F3352-19 Standard Specification for Isolation Gowns Intended for Use in Healthcare Facilities. The overall findings show that commercially available reusable gowns initially met the ANSI/AAMI PB70:2012 and ASTM F3352 standards. Out of the six sample groups, gowns in one group failed the ANSI/AAMI PB70:2012 specifications before the end of their intended lifecycle. All gowns met the specifications for durability in ASTM F3352-19, but further research showed tear strength after laundering weakened substantially. The current standard for Level 2 isolation gowns is protecting the lives of healthcare workers. However, the specifications could be improved by ANSI/AAMI by evaluating the performance after laundering instead of as new. Durability specifications would be improved by increasing the requirements for reusable gowns.","PeriodicalId":502144,"journal":{"name":"AATCC Journal of Research","volume":"4 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139242636","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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