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Metal ion adsorbability of electrospun wool keratose/silk fibroin blend nanofiber mats

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Abstract

In this study, electrospun wool keratose (WK)/silk fibroin (SF) blend nanofiber was prepared and evaluated as a heavy metal ion adsorbent which can be used in water purification field. The WK, which was a soluble fraction of oxidized wool keratin fiber, was blended with SF in formic acid. The electrospinnability was greatly improved with an increase of SF content. The structure and properties of WK/SF blend nanofibers were investigated by SEM, FTIR, DMTA and tensile test. Among various WK/SF blend ratios, 50/50 blend nanofiber showed an excellent mechanical property. It might be due to some physical interaction between SF and WK molecules although FTIR result did not show any evidence of molecular miscibility. As a result of metal ion adsorption test, WK/SF blend nanofiber mats exhibited high Cu2+ adsorption capacity compared with ordinary wool sliver at pH 8.5. It might be due to large specific surface area of nanofiber mat as well as numerous functional groups of WK. Consequently, the WK/SF blend nanofiber mats can be a promising candidate as metal ion adsorption filter.

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Authors and Affiliations

  1. Department of Biosystems and Biomaterials Science and Engineering, Seoul National University, 151-742, Seoul, Korea

    Doo Hyun Baek, Chang Seok Ki & Young Hwan Park

  2. Department of Natural Fiber Sciences, Kyungpook National University, 702-701, Daegu, Korea

    In Chul Um

  3. Research Institute for Agriculture and Life Science, Seoul National University, 151-742, Seoul, Korea

    Young Hwan Park

Authors
  1. Doo Hyun Baek
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  2. Chang Seok Ki
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  3. In Chul Um
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  4. Young Hwan Park
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Correspondence to Young Hwan Park.

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Baek, D.H., Ki, C.S., Um, I.C. et al. Metal ion adsorbability of electrospun wool keratose/silk fibroin blend nanofiber mats. Fibers Polym 8, 271–277 (2007). https://doi.org/10.1007/BF02877269

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  • DOI: https://doi.org/10.1007/BF02877269

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