Fibers and Polymers最新文献

{"title":"Development of Bifunctional Electrospun Filters Incorporating Surfactants for Enhanced Particulate Matter Filtration and Antimicrobial Activity","authors":"Edilton Nunes da Silva,&nbsp;Paulo Augusto Marques Chagas,&nbsp;Felipe de Aquino Lima,&nbsp;Clovis Wesley Oliveira de Souza,&nbsp;Mônica Lopes Aguiar,&nbsp;Vádila Giovana Guerra","doi":"10.1007/s12221-024-00729-8","DOIUrl":"10.1007/s12221-024-00729-8","url":null,"abstract":"<div><p>Ultrafine particulate matter and airborne microorganisms present in the atmosphere significantly affect human health, leading to serious respiratory diseases. Among these particulates are bioaerosols, which include viruses, bacteria, and fungi. When inhaled, these microorganisms can cause diseases, such as influenza, tuberculosis, and COVID-19. Therefore, the development of bifunctional membranes that can simultaneously filter particulate matter (PM) and inhibit microorganism growth is essential. Electrospun filters, known for their high surface area, are effective in capturing these airborne particles. This study presents a novel approach by incorporating various surfactants into electrospun filters made from 8% polyacrylonitrile (PAN). The surfactants used include cetyltrimethylammonium bromide (CTAB), widely cited in the literature for bactericidal filtering applications, as well as sodium dodecyl sulfate (SDS) and cetylpyridinium chloride (CPC), which are rarely used in electrospun filters for this purpose. The addition of surfactants enhanced the filter performance, capturing particles smaller than 250 nm with over 99% efficiency for particles between 6.38 and 242 nm. The pressure drop across the filters ranged from 111.4 ± 1.2 to 204.4 ± 1.1 Pa. Moreover, the incorporation of surfactants not only improved hydrophobic and hydrophilic properties—where hydrophobic nanofibers performed better for filtration—but also significantly increased antimicrobial activity against <i>Staphylococcus aureus</i> (97.25 ± 0.95%) and <i>Escherichia coli</i> (94.52 ± 2.37%). These filters not only capture particles but also inactivate pathogens, contributing to a healthier environment. Filters with biocidal properties are particularly useful in hospitals, laboratories, and other settings where air sterility is critical.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"25 11","pages":"4227 - 4243"},"PeriodicalIF":2.2,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metallo-tetraphenylporphyrin-Based Porous Organic Polymers: Effect of Metal Components on Carbon Dioxide Adsorption and Conversion","authors":"Yonggyun Cho,&nbsp;Hyunwoo Byun,&nbsp;Yijin Choi,&nbsp;Santosh Kumar,&nbsp;Nazrul Hsan,&nbsp;Minyoung Eom,&nbsp;Keechul Youm,&nbsp;Joonseok Koh","doi":"10.1007/s12221-024-00727-w","DOIUrl":"10.1007/s12221-024-00727-w","url":null,"abstract":"<div><p>A series of metalated porous organic polymers (POPs) derived from tetraphenylporphyrin (TPP) was synthesized, and the specific surface areas, selectivities for CO₂ over N₂, and conversion properties of the POPs were investigated. The metallo-tetraphenylporphyrin-based porous organic polymers were characterized using FT-IR, ¹³C-NMR, TGA, XRD, XPS, HR-FESEM, and EDX. Among the five catalysts studied, non-metalated TPP-based POP exhibited the highest BET surface area of 524.04 m²g⁻¹, whereas the Ni(II)TPP-based POP had the greatest CO₂/N₂ selectivity at both 298 and 323 K. In terms of the catalytic efficiency for the conversion of styrene oxide to styrene carbonate using CO₂, 2HPOP exhibited the highest yield of 91.67%, while the yield obtained with the metalated POPs was approximately 20%. This result suggests that the catalytic efficiency for CO₂ conversion is determined by both the selectivity and surface area of the metalated POPs. Moreover, the improvement in the CO₂/N₂ selectivity resulting from metalation did not play a dominant role in counterbalancing and surpassing the decrease in porosity.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"25 11","pages":"4161 - 4174"},"PeriodicalIF":2.2,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Structural Integrity and Geometric Configurations of Corrugated Cores on Flexural Properties of Sandwich Panels: Experimental and Numerical Method","authors":"Hamid Abedzade Atar,&nbsp;Mohammad Zarrebini,&nbsp;Jalil Rezaeepazhand,&nbsp;Hossein Hasani","doi":"10.1007/s12221-024-00725-y","DOIUrl":"10.1007/s12221-024-00725-y","url":null,"abstract":"<div><p>This research explores how the structural integrity and geometric configurations of corrugated cores impact the bending characteristics of sandwich panels. The 3-D knitted fabrics were produced on a flat knitting machine to form an integrated structure, while the non-integrated structure was manufactured by conventional 2-D fabrics in the identical parameters. The bonding of the core to the skin in the non-integrated structure was achieved by resin. The both integrated and non-integrated structures were fabricated with nearly identical mass and epoxy resin was injected through a vacuum assisted resin transfer method. The integrated 3D composite structures were manufactured in three distinct corrugated core designs: rectangular, hat-type, and triangular. The bending characteristics of the produced structures were measured in the transverse direction of corrugation by 3-point bending process. The results indicated that under equivalent load conditions for long beams, the 3D integrated structure displayed reduced bending deflections and enhanced bending stiffness compared to the non-integrated structure. Moreover, the non-integrated exhibited higher transverse shear rigidity than the integrated structure. It was also found that in long beams, the load-carrying capacity of the integrated structure is higher than that of the non-integrated structure. This comparison demonstrates some advantages of 3-D fabric as a sandwich panel reinforcement compared to lamination of 2-D fabric. Also, experimental results demonstrated that core geometry cannot significantly influence the flexural stiffness of the corrugated core sandwich panels. Finally, results demonstrated that the highest and the lowest transverse shear rigidity can be associated with the hat-type core sandwich panels and the triangular core sandwich panels, respectively. So, the hat-type corrugated core sandwich panel has the lowest deflection against bending force. Lastly, the experimental findings were evaluated against those from finite element analysis and showed a good correlation between experimental and numerical results.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"25 11","pages":"4371 - 4385"},"PeriodicalIF":2.2,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal Behavior of Functionalized Polybenzoxazines: Part 2, Directive Influence of Ethynyl Group","authors":"Kwang Soo Cho,&nbsp;HoDong Kim","doi":"10.1007/s12221-024-00722-1","DOIUrl":"10.1007/s12221-024-00722-1","url":null,"abstract":"<div><p>This paper describes the investigation of the influence of the substitution position of ethynyl groups in benzoxazines on their ring-opening polymerization (ROP) and the thermal stability of the resulting polybenzoxazines. A series of benzoxazines derived from bisphenol A with ethynyl groups at various positions are synthesized and structurally characterized using Fourier transform infrared (FT-IR) spectroscopy and ¹H nuclear magnetic resonance (¹H-NMR) spectroscopy. Monitoring of the curing behavior via in situ FT-IR and differential scanning calorimetry analyses reveals the occurrence of position-dependent effects during curing. Kinetic studies of the curing process, conducted via the Kissinger and Ozawa methods, indicate that the presence of ethynyl groups not only promotes the ROP but also reduces the activation energy required for the process. Compared to conventional ethynyl-free polybenzoxazine, ethynyl-functionalized polybenzoxazines exhibit superior thermal stability, including increased glass transition temperature. In particular, the introduction of the ethynyl groups at the <i>meta</i> position provides the greatest enhancement of the thermal properties, reaching an increase in the char yield of approximately 21%. This position also allows reducing the curing temperature, underscoring its critical role in the development of high-performance polybenzoxazines.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"25 11","pages":"4125 - 4135"},"PeriodicalIF":2.2,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transparent Cellulose-Based Composite Film with Functional Integration for Potential Agriculture Application","authors":"Tao Zhang,&nbsp;Jiali Ran,&nbsp;Yu Chen,&nbsp;Xiao Zhang,&nbsp;Yannan Chen,&nbsp;Fengxian Qiu","doi":"10.1007/s12221-024-00718-x","DOIUrl":"10.1007/s12221-024-00718-x","url":null,"abstract":"<div><p>Within the realm of sustainable agriculture, there is a growing focus on the development of biodegradable plastic coverings in response to the adverse environmental impact stemming from contamination by fossil-based plastic film. Herein, a function-integrated cellulose-based composite film was innovatively designed for agricultural insulation applications. Lignocellulosic nanofibers (LCNF) and hollow SiO₂ microspheres are blended to construct LCNF/SiO₂ composite films with multistage nanocavity structures. Meanwhile, the hexadecyltrimethoxysilane modification further promotes the integration of hydrophobic function and the encapsulated function of hollow SiO₂ microspheres in the composite film to form the hydrophobic LCNF/SiO₂ (H-LCNF/SiO₂) composite film. Owing to the small size effect of SiO₂ microspheres and the nanocavity structure, the resulting film exhibits a low thermal conductivity (0.07 ± 0.002 W/(m·K)) and excellent optical properties of the UV–Vis transmission with transparency of over 77% (above 600 nm). Furthermore, H-LCNF/SiO₂ composite film displays acceptable mechanical properties with tensile strength of 56.03 MPa and elongation at a break of 6.10%, respectively. Notably, the composite film acquires excellent flexibility, water-proofing, water vapor permeability, and biodegradable performances, improving agricultural applications. Therefore, this work provides a lignocellulose-based film with functional integration that differs from traditional agricultural films by constructing a hollow structure to achieve thermal protection, with the advantage of being more energy efficient and environmentally friendly, promising potential applications in agriculture.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"25 11","pages":"4137 - 4147"},"PeriodicalIF":2.2,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In Situ Modification of Alginate Fibers by Nano-montmorillonite for Enhancing the Mechanical Properties","authors":"Jiahui Xu,&nbsp;Xiaoqing Guo,&nbsp;Wei Wang,&nbsp;Di Xu,&nbsp;Mengting Liu,&nbsp;Ningyuan Fang,&nbsp;Zhaoqing Gong,&nbsp;Jie Liu,&nbsp;Chuanjie Zhang","doi":"10.1007/s12221-024-00714-1","DOIUrl":"10.1007/s12221-024-00714-1","url":null,"abstract":"<div><p>Aimed at the current problems of low strength and poor toughness in alginate fibers, which limits its large-scale application in the textile field, nano-montmorillonite (MMT) suspension was added into sodium alginate spinning solution during the wet spinning process with CaCl₂ solution as the coagulation and the modified alginate fibers were obtained. The structure of the fibers was characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), X-ray diffraction (XRD), and TGA. The mechanical properties and water regain rate of the fibers were tested, and the mechanism of intermolecular interaction between sodium alginate and MMT was analyzed. The results indicate that the mechanical properties of MMT-modified alginate fibers were significantly improved. The fracture strength of the modified alginate fibers was increased from 1.32 cN/dtex to 3.01 cN/dtex. The elongation at break increased from 9.11% to 16.05%. The preparation of alginate/MMT fibers provides a feasible reinforcement and toughening strategy for alginate fibers, which improves toughness while achieving an increase in fracture strength. The preparation of alginate fibers with high strength and good toughness is beneficial for expanding the application of textiles.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"25 10","pages":"3791 - 3801"},"PeriodicalIF":2.2,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable Active Food Packaging: Biodegradable Nanofibrous Mats Incorporated Spent Pumpkin Carbon Dots for Enhanced Shelf Life","authors":"Ozge Tiryaki,&nbsp;Cemhan Dogan,&nbsp;Yasin Akgul","doi":"10.1007/s12221-024-00698-y","DOIUrl":"10.1007/s12221-024-00698-y","url":null,"abstract":"<div><p>Carbon dots (CDs), the subject of the Nobel Prize in chemistry in 2023, are promising materials for active food packaging with properties, such as antioxidant and antimicrobial activity, non-toxicity, and ultraviolet protection. Therefore, composite films containing CDs have been investigated for food packaging applications in recent years. However, as far as we know, limited studies have been carried out in which carbon dots are added to nanofibrous mats, which show superior properties such as high surface area-to-volume ratio compared to film structures. In this study, CDs were produced via hydrothermal carbonization from the waste material, the spent pumpkin. Aimed to develop and evaluate composite nanofibrous mats incorporating carbon dots (CDs) for active food packaging, specifically utilizing spent pumpkin-derived carbon dots (SPCDs) to enhance the functional properties of the packaging materials. The composite nanofibrous mats, fabricated from a blend of polyvinyl alcohol and carboxymethyl cellulose incorporating SPCDs, demonstrated low toxicity on chondrocyte and lung cell types, indicating their safety for food packaging applications. The inclusion of SPCDs enhanced the antioxidant activity provided inhibitory effects against <i>E. coli and S. aureus</i>, and improved the mechanical strength of the mats. Real food trials with walnut oils revealed that the mats effectively reduced lipid oxidation, thereby extending the product's shelf life. Additionally, the mats were fully biodegradable, decomposing completely in soil within 42 days. These results suggest that the novel composite nanofibrous mats have great potential for sustainable and active food packaging, offering a practical and comprehensive solution for the industry.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"25 10","pages":"3711 - 3726"},"PeriodicalIF":2.2,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transmissive-to-Black Electrochromic Switching of Pendant Viologen Polymer with Superior Long-Term Operation Stability","authors":"Do Yeon Kim,&nbsp;Soo Yeon Eom,&nbsp;Jong S. Park","doi":"10.1007/s12221-024-00723-0","DOIUrl":"10.1007/s12221-024-00723-0","url":null,"abstract":"<div><p>Electrochromic devices (ECDs) have evolved significantly with advancements in electrochromic materials. Viologen-based ECDs, known for their tunable electrochromic properties, face challenges such as low cyclic lifetime and electrolyte leakage. This study introduces poly-APPV, a pendant viologen polymer exhibiting transmissive-to-black electrochromic switching. The polymer offers enhanced long-term stability and rapid switching times, effectively addressing these challenges. The synthesis of allyl viologen, [APPV][PF₆]₂, and poly-APPV is successfully characterized using ¹H-NMR, FT-IR, and GPC analyses. Cyclic voltammetry reveals diffusion-controlled redox reactions, while electrochemical impedance spectroscopy shows acceptable ionic conductivity of poly-APPV. Spectroelectrochemical studies indicate significant transmittance changes, with poly-APPV exhibiting a lower operating voltage and superior transmittance difference. Long-term stability tests confirm superior optical density and high coloration efficiency of poly-APPV. Overall, the pendant viologen polymer’s enhanced properties make it a promising material for electrochromic applications. These findings prove the benefits of polymerized viologens in enhancing electrochromic performances, offering valuable insights for developing next-generation electrochromic systems.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"25 11","pages":"4115 - 4123"},"PeriodicalIF":2.2,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Comprehensive Analysis of Thermal Comfort and Steam Protective Performance of Fabric Systems Containing a 3D Spacer Layer","authors":"Mengjiao Pan,&nbsp;Yehu Lu,&nbsp;Jingxian Xu","doi":"10.1007/s12221-024-00711-4","DOIUrl":"10.1007/s12221-024-00711-4","url":null,"abstract":"<div><p>Spacer fabric (SF) as an ideal candidate for steam protective clothing, provides outstanding thermal insulation and moisture permeability owing to its sandwich structure. This study developed 14 spacer fabric systems (SFSs) and investigated the effects of 4 SF design parameters, including heat setting, spacer yarn fineness, feeding structure, and top layer structure, on thermal comfort. Furthermore, the quantitative relationship between thermal comfort and steam protective performance of SFSs was explored. The results demonstrated that thermal resistance (<i>R</i>_cf) and evaporative resistance (<i>R</i>_ef) of SFSs increased with the increasing of monofilament fineness, whereas increasing the fineness from 30 to 50 D had a negligible influence. The feeding structure displayed a greater impact on the thermal comfort than monofilament fineness, and the <i>R</i>_cf and <i>R</i>_ef showed the sequence of feeding structure I &lt; II &lt; III. SF heat setting and top layer structure minimally influence the <i>R</i>_cf and <i>R</i>_ef of SFSs. The <i>R</i>_ef was positively correlated with the time to second-degree burn, and negatively correlated with absorbed energy during exposure and total absorbed energy, both strongly and significantly (<i>p</i> &lt; 0.05). This study contributes to revealing the design mechanism of thermal and moisture related properties of SFSs and developing steam protective clothing with good thermal comfort.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"25 10","pages":"4061 - 4069"},"PeriodicalIF":2.2,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating Spindle Tape Aging Effects on Ring Spun Yarn Quality: A Regression Analysis Approach","authors":"Amit Chakrabortty,&nbsp;Shahriar Raian,&nbsp;Riyad Hasan,&nbsp;Subrata Kumar Saha,&nbsp;Jamal Hossen,&nbsp;Siyam Quddus Khan","doi":"10.1007/s12221-024-00721-2","DOIUrl":"10.1007/s12221-024-00721-2","url":null,"abstract":"<div><p>Ring spinning is noteworthy for its wide range of uses as well as the substantial influence of process parameters, such as spindle speed, traveler count, ring diameter, and roller pressure, on yarn quality. Despite substantial research on these parameters, the impact of spindle tape aging on yarn quality remains unexplored. This study fills a gap by investigating the effect of spindle tape lifespan on yarn-quality measures. Thirteen samples of 30 Ne were developed against different spindle tape ages such as 0 (new) to 24 months at the 2-month interval. The best spindle tape replacement interval was determined using a regression analysis using confidence and prediction bounds, as well as yarn-quality standards. The findings indicate that the strength, imperfection, and hairiness of yarn are greatly impacted by spindle tape aging. Based on the findings, it is advised that spindle tapes be replaced every 18 months to ensure good yarn quality. This study offers useful information on spindle tape maintenance to factory owners, along with doable suggestions to improve the quality of yarn production.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"25 10","pages":"4045 - 4059"},"PeriodicalIF":2.2,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142250630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}