Journal of Fiber Science and Technology
Online ISSN : 2189-7654
ISSN-L : 2189-7654
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Displaying 1-3 of 3 articles from this issue
Transaction
  • Ding Jinyou, Chen Gonglin, Huang Wei, Cheng Jinlong, Li Ting, Cheng Ch ...
    Article type: Transaction
    2024 Volume 80 Issue 7 Pages 155-162
    Published: 2024
    Released on J-STAGE: July 19, 2024
    JOURNAL OPEN ACCESS
    Supplementary material

    At present, the research on improving the performance of ultrahigh molecular weight polyethylene fiber mostly starts from a single process or single factor, and lacks comprehensive cross-process research. Based on a large number of experimental data, this paper studies the relationship between mechanical properties and processing parameters of ultrahigh molecular weight polyethylene fiber (UHMWPE) by factor analysis. After the dimensionality reduction of processing parameters, three main influencing factors (including most of the processing information in the whole process) were extracted, and the main influencing factor was determined to be the draw-down ratio by correlation analysis and F-test. On this basis, the multiple linear regression model of fiber properties and processing parameters in the whole processing process is established, and the mechanical properties of the fiber can be predicted by the processing parameters.

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  • Atsumi Sakamaki, Maika Tamari, Chigusa Genosumi, Keiko Shimizu, Yoshie ...
    Article type: Transaction
    2024 Volume 80 Issue 7 Pages 163-171
    Published: 2024
    Released on J-STAGE: July 19, 2024
    JOURNAL OPEN ACCESS
    Supplementary material

    The degradation of textile products and the release of fiber fragment in daily life were investigated, with a focus on ultraviolet (UV) radiation. The impact of UV degradation on fiber release was assessed using a super-accelerated weathering tester. Accelerated weathering tests were conducted with a typical specimen size (150 × 70 mm), and a washing procedure suitable for this cloth size was developed. A high reproducibility of 2.28 % maximum error was achieved by manually rubbing and repeating the cleaning process until no fibre release was observed.Continuous irradiation tests and washing, performed at 24 h intervals, ranging from 0 h (unirradiated) to a maximum of 168 h, revealed an increase in the amount of fiber release with prolonged irradiation time. Notably, nylon exhibited the highest susceptibility to degradation induced by ultraviolet radiation. Cotton/polyester showed a Fibre Fragment (FF) release rate of about 6 % in continuous irradiation tests, which increased to about 15 % after repeated irradiation and washing every 24 h for up to a maximum of 168 h. An examination of the effect of fluorescent brighteners on UV degradation showed no discernible impact.

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Note
  • Natsuho Sato, Yoshimasa Amano, Motoi Machida
    Article type: Note
    2024 Volume 80 Issue 7 Pages 172-177
    Published: 2024
    Released on J-STAGE: July 19, 2024
    JOURNAL OPEN ACCESS

    It has been confirmed in a previous study that polyacrylonitrile (PAN)-based activated carbon (AC) fiber activated with Na2CO3 adsorbs nitrate ions in batch adsorption. In this study, the activated carbon fiber (ACF) was applied for flow adsorption of nitrate ions using a column. The regeneration capability of the column was also examined. Comparing the amount of nitrate adsorbed by different column diameters, the 7 mm column adsorbed the most nitrate ions. A comparison of the adsorption amount when the nitrate solution was initially adjusted to pH 3 and when the nitrate solution was not adjusted showed that the column without pH adjustment was quickly broken, resulting in a low adsorption amount.

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