Pub Date : 2023-01-01DOI: 10.2115/fiberst.2023-0005
Kohei Yamaguchi, Aya Atomi, Masaki Oyauchi, Miho Shimizu, T. Atomi, Y. Atomi
{"title":"The Relationship between Skin Biomechanical Properties Around the Spine and Spinal Kinematics of the Trunk","authors":"Kohei Yamaguchi, Aya Atomi, Masaki Oyauchi, Miho Shimizu, T. Atomi, Y. Atomi","doi":"10.2115/fiberst.2023-0005","DOIUrl":"https://doi.org/10.2115/fiberst.2023-0005","url":null,"abstract":"","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67641593","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}
Pub Date : 2023-01-01DOI: 10.2115/fiberst.2023-0009
Wendan Yang, H. Xia, T. Natsuki, Q. Ni
{"title":"Design and Sound Absorption Performance of a Laminated Structure Using Natural Materials","authors":"Wendan Yang, H. Xia, T. Natsuki, Q. Ni","doi":"10.2115/fiberst.2023-0009","DOIUrl":"https://doi.org/10.2115/fiberst.2023-0009","url":null,"abstract":"","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67641896","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}
Pub Date : 2023-01-01DOI: 10.2115/fiberst.2023-0013
Yuki Mashiyama, Yuka Hasunuma, A. Fujimori
{"title":"Solvent Selectivity in Helical/Linear Nanofiber-Derived Gelation Imparted by Chiral/Achiral Thixotropic Additive Molecules","authors":"Yuki Mashiyama, Yuka Hasunuma, A. Fujimori","doi":"10.2115/fiberst.2023-0013","DOIUrl":"https://doi.org/10.2115/fiberst.2023-0013","url":null,"abstract":"","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67641995","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}
Applying synthetic dyes in textile dyeing may lead to severe environmental pollution due to liquid waste emissions; therefore, it is urgent to develop environmentally-friendly ecological dyes to minimize such damage. By using Pu’er tea extract (PTE) as a natural colorant to dye wool, this study created such bio-colored material in experiments, during which the thermal stability and antibacterial activity of wool both with and without PTE dyeing were also explored. Most importantly, it is proved that the dyed wool can deliver better color depth and fastness, with the dyeing ability considerably improved after ferrous sulfate (FeSO4·7H2O) mordant treatment as well. Furthermore, the inhibition rate of wool against Escherichia coli (E. coli) could reach 88.02 % and 90.25 % for direct dyeing and mordant dyeing, respectively, at a PTE concentration of 60 g/L, while the antibacterial rate remains above 70 % after 10 washing cycles of accelerated laundering. Another important phenomenon observed is that the thermal decomposition temperature of the wool dyed with PTE was increased, demonstrating that PTE, as a natural colorant, could improve the thermal stability of wool, in addition to stable dyeing properties.
{"title":"Fabrication of Bio-Colored and Functional Wool Using Natural Pu’er Tea Extract","authors":"Yue Zhang, Yanmei Jia, Jipeng Cao, Xuezhi Yu, Mingguang Zhang","doi":"10.2115/fiberst.2023-0025","DOIUrl":"https://doi.org/10.2115/fiberst.2023-0025","url":null,"abstract":"Applying synthetic dyes in textile dyeing may lead to severe environmental pollution due to liquid waste emissions; therefore, it is urgent to develop environmentally-friendly ecological dyes to minimize such damage. By using Pu’er tea extract (PTE) as a natural colorant to dye wool, this study created such bio-colored material in experiments, during which the thermal stability and antibacterial activity of wool both with and without PTE dyeing were also explored. Most importantly, it is proved that the dyed wool can deliver better color depth and fastness, with the dyeing ability considerably improved after ferrous sulfate (FeSO4·7H2O) mordant treatment as well. Furthermore, the inhibition rate of wool against Escherichia coli (E. coli) could reach 88.02 % and 90.25 % for direct dyeing and mordant dyeing, respectively, at a PTE concentration of 60 g/L, while the antibacterial rate remains above 70 % after 10 washing cycles of accelerated laundering. Another important phenomenon observed is that the thermal decomposition temperature of the wool dyed with PTE was increased, demonstrating that PTE, as a natural colorant, could improve the thermal stability of wool, in addition to stable dyeing properties.","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135710479","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}
Millimeter-thick laminated materials comprised solely of cellulose nanofibers (CNFs) combine optical transparency, high strength, and thermal anisotropy. These CNF laminates were fabricated by stacking thin CNF sheets and applying CNFs dispersed in a water/ethanol mixture as binder, followed by hot pressing. The number of stacked CNF sheets can control the laminate thickness within a wide range of dimensions. Here, we report the correlation between the material properties and laminate thickness of this all-CNF plate material. CNF laminates with different thicknesses (~30-500 μm) were fabricated using 1-15 CNF sheets. The crystallinity of the CNFs in the laminates was greatly enhanced by increasing the number of stacked sheets. This trend in crystallinity is explained by the longer period of time required for drying thicker laminates in the hot press process. The visible-light transmittance of the laminates was well described by the Beer–Lambert law; scattering and/or reflection at the binding interface between sheets were estimated to be negligibly small. The elastic modulus of the laminates increased with increasing number of stacked sheets and reached a maximum of 36 GPa. This increasing trend was explained by the enhanced crystallinity of the CNFs in the laminates. The tensile strengths of the laminates varied greatly, and no clear trend as a function of the number of stacked sheets was found. The thermal conductivity increased with increasing number of stacked sheets, which was attributed to the enhanced crystallinity.
{"title":"Property-Thickness Correlations of Transparent All-Nanocellulose Laminates","authors":"Shun Ishioka, Takayuki Hirano, Nobuhiro Matoba, Noriyuki Isobe, Shuji Fujisawa, Tsuguyuki Saito","doi":"10.2115/fiberst.2023-0020","DOIUrl":"https://doi.org/10.2115/fiberst.2023-0020","url":null,"abstract":"Millimeter-thick laminated materials comprised solely of cellulose nanofibers (CNFs) combine optical transparency, high strength, and thermal anisotropy. These CNF laminates were fabricated by stacking thin CNF sheets and applying CNFs dispersed in a water/ethanol mixture as binder, followed by hot pressing. The number of stacked CNF sheets can control the laminate thickness within a wide range of dimensions. Here, we report the correlation between the material properties and laminate thickness of this all-CNF plate material. CNF laminates with different thicknesses (~30-500 μm) were fabricated using 1-15 CNF sheets. The crystallinity of the CNFs in the laminates was greatly enhanced by increasing the number of stacked sheets. This trend in crystallinity is explained by the longer period of time required for drying thicker laminates in the hot press process. The visible-light transmittance of the laminates was well described by the Beer–Lambert law; scattering and/or reflection at the binding interface between sheets were estimated to be negligibly small. The elastic modulus of the laminates increased with increasing number of stacked sheets and reached a maximum of 36 GPa. This increasing trend was explained by the enhanced crystallinity of the CNFs in the laminates. The tensile strengths of the laminates varied greatly, and no clear trend as a function of the number of stacked sheets was found. The thermal conductivity increased with increasing number of stacked sheets, which was attributed to the enhanced crystallinity.","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135103731","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}
In this study, the melt-drawing behavior of melt-spun ultrahigh-molecular-weight polyethylene (UHMW-PE) fibers with different oriented crystalline states was investigated by in situ wide-angle X-ray diffraction (WAXD) measurements. Melt-spun UHMW-PE fibers with different oriented crystalline states were prepared at different take-up speeds. The obtained melt-spun fibers were melt-drawn at 140 °C, and the oriented crystallization behavior during melt-drawing was evaluated by in situ WAXD measurements. Drawing started from a state where molten amorphous and oriented crystals coexisted. As drawing proceeded, the oriented crystallization occurred during melt-drawing. Rapid oriented crystallization occurred for the melt-spun fiber prepared at a high take-up speed with many remaining oriented crystals, indicating the effective transmission of the applied stress through the remaining oriented crystals. On the other hand, gentle oriented crystallization with chain slippage occurred during the melt-drawing of the melt-spun fiber prepared at a low take-up speed with few remaining oriented crystals. The oriented crystallization with chain slippage improved the melt drawability and simultaneously yielded a high crystalline orientation, resulting in melt-drawn fibers with both high tensile strength and small diameter. The findings obtained are important for simultaneously achieving high strength and small diameter of UHMW-PE fibers prepared by melt-processing.
{"title":"<i>In Situ</i> Analysis of Melt-Drawing Behavior of Melt-Spun Ultrahigh-Molecular-Weight Polyethylene Fibers","authors":"Masaki Kakiage, Yuka Yokochi, Ayaka Takazawa, Takeshi Yamanobe, Hiroki Uehara","doi":"10.2115/fiberst.2023-0022","DOIUrl":"https://doi.org/10.2115/fiberst.2023-0022","url":null,"abstract":"In this study, the melt-drawing behavior of melt-spun ultrahigh-molecular-weight polyethylene (UHMW-PE) fibers with different oriented crystalline states was investigated by in situ wide-angle X-ray diffraction (WAXD) measurements. Melt-spun UHMW-PE fibers with different oriented crystalline states were prepared at different take-up speeds. The obtained melt-spun fibers were melt-drawn at 140 °C, and the oriented crystallization behavior during melt-drawing was evaluated by in situ WAXD measurements. Drawing started from a state where molten amorphous and oriented crystals coexisted. As drawing proceeded, the oriented crystallization occurred during melt-drawing. Rapid oriented crystallization occurred for the melt-spun fiber prepared at a high take-up speed with many remaining oriented crystals, indicating the effective transmission of the applied stress through the remaining oriented crystals. On the other hand, gentle oriented crystallization with chain slippage occurred during the melt-drawing of the melt-spun fiber prepared at a low take-up speed with few remaining oriented crystals. The oriented crystallization with chain slippage improved the melt drawability and simultaneously yielded a high crystalline orientation, resulting in melt-drawn fibers with both high tensile strength and small diameter. The findings obtained are important for simultaneously achieving high strength and small diameter of UHMW-PE fibers prepared by melt-processing.","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135158555","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}
Pub Date : 2023-01-01DOI: 10.2115/fiberst.2023-0002
Xueshan Chen, W. Tian, Xiaoke Jin, Chengyan Zhu
{"title":"Analysis of Sandwich Composite Manufacture with Triaxial-Processed Foam Core by Vacuum-Assisted Resin Infusion Moulding and Resin Reinforcement","authors":"Xueshan Chen, W. Tian, Xiaoke Jin, Chengyan Zhu","doi":"10.2115/fiberst.2023-0002","DOIUrl":"https://doi.org/10.2115/fiberst.2023-0002","url":null,"abstract":"","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67641144","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}
Miscibility characterization were performed on binary blends of aliphatic polyester with cellulose acetate (CA). Poly(ethylene succinate) (PES) and poly(butylene adipate) (PBA) were selected as aliphatic polyester components. Three samples of CA having different degrees of substitution (DS = 2.45, 2.70, 2.95) were used. Blend films of aliphatic polyester with CA were prepared from mixed polymer solutions by solvent evaporation. The estimation of the blend miscibility was carried out by differential scanning calorimetry (DSC) and polarized optical microscopy (POM). From thermal data obtained by DSC analysis, it was found that PES was miscible with CA (DS = 2.45) and CA(DS = 2.70). However, it was immiscible with CA(DS = 2.95) and PBA was immiscible with all CAs. The isothermal crystallization behavior of PBA/cellulose ester blends was followed by POM. For blend samples of PES with CA(DS = 2.45), the radial growth rates of PES spherulites were depressed remarkably by increasing the amount of CA in the blends. Such depression of the crystal growth rate may be attributed to the diluent effect of CA, supporting the good miscibility of these blends. When the blend samples were prepared by using PES and CA(DS = 2.95) or PBA and CA(DS = 2.45), the radial growth rates of spherulites were almost constant regardless of the amount of CA in the blends, showing the immiscibility of these blends. From these results, it was assumed that good miscibility of PES/CA blends would be derived from the structural affinity of repeating unit of PES and acetyl side groups of CA.
{"title":"脂肪族ポリエステル／セルロースアセテート系ブレンドの相溶性","authors":"Masamichi Kiyoura, Kosuke Mizuno, Misato Kobayashi, Yoshiharu Miyashita","doi":"10.2115/fiberst.2023-0029","DOIUrl":"https://doi.org/10.2115/fiberst.2023-0029","url":null,"abstract":"Miscibility characterization were performed on binary blends of aliphatic polyester with cellulose acetate (CA). Poly(ethylene succinate) (PES) and poly(butylene adipate) (PBA) were selected as aliphatic polyester components. Three samples of CA having different degrees of substitution (DS = 2.45, 2.70, 2.95) were used. Blend films of aliphatic polyester with CA were prepared from mixed polymer solutions by solvent evaporation. The estimation of the blend miscibility was carried out by differential scanning calorimetry (DSC) and polarized optical microscopy (POM). From thermal data obtained by DSC analysis, it was found that PES was miscible with CA (DS = 2.45) and CA(DS = 2.70). However, it was immiscible with CA(DS = 2.95) and PBA was immiscible with all CAs. The isothermal crystallization behavior of PBA/cellulose ester blends was followed by POM. For blend samples of PES with CA(DS = 2.45), the radial growth rates of PES spherulites were depressed remarkably by increasing the amount of CA in the blends. Such depression of the crystal growth rate may be attributed to the diluent effect of CA, supporting the good miscibility of these blends. When the blend samples were prepared by using PES and CA(DS = 2.95) or PBA and CA(DS = 2.45), the radial growth rates of spherulites were almost constant regardless of the amount of CA in the blends, showing the immiscibility of these blends. From these results, it was assumed that good miscibility of PES/CA blends would be derived from the structural affinity of repeating unit of PES and acetyl side groups of CA.","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135710489","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}
Pub Date : 2023-01-01DOI: 10.2115/fiberst.2023-0004
K. Noda, Takuya Uto, T. Yui
{"title":"Molecular Dynamics Simulation Study of Chitosan−Zinc Chloride Complex Model","authors":"K. Noda, Takuya Uto, T. Yui","doi":"10.2115/fiberst.2023-0004","DOIUrl":"https://doi.org/10.2115/fiberst.2023-0004","url":null,"abstract":"","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67641472","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}
Pub Date : 2023-01-01DOI: 10.2115/fiberst.2023-0014
H. Yasunaga, Akari Oda, Yodsawon Tasa, Kamthorn Intharapichai, Hideyuki Shima, Y. Okahisa, H. Ohara
{"title":"Colour Fastness of Silk Fabrics Dyed with Extracts from Oil Palm Tree Kernel Shell and Effect of Metal Ion Mordanting on Fabric Colour","authors":"H. Yasunaga, Akari Oda, Yodsawon Tasa, Kamthorn Intharapichai, Hideyuki Shima, Y. Okahisa, H. Ohara","doi":"10.2115/fiberst.2023-0014","DOIUrl":"https://doi.org/10.2115/fiberst.2023-0014","url":null,"abstract":"","PeriodicalId":54299,"journal":{"name":"Journal of Fiber Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67642442","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}
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