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Functional group penetration thickness and intraparticle diffusivity of electrospun poly(acrylonitrile) ion-exchange fibers

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Abstract

The penetration depth of the functional group and the intraparticle diffusivity of a transition metal cation (Cu2+) have been determined for sub-micron-sized electrospun alkali hydrolyzed poly(acrylonitrile) ion-exchange fibers. The ion-exchange fiber’s shell thickness, determined using a TEM coupled with EDX spectrophotometer, was 8–14 nm and it averaged ~11 nm. The intraparticle diffusivity obtained through numerical simulation for the bidirectional transport of ions into and out of the fiber, i.e., for uptake as well as regeneration kinetics, is in the order of 10−20 m2/s.

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Acknowledgements

We acknowledge financial support by the National Science Foundation Partnerships for Innovation Program through award no. IIP-0605163. The authors are grateful to Dr. Alexander Ribbe (UMass Amherst) for providing technical support for TEM/EDS analysis.

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Author notes

  1. Tabish Nawaz and Manisha Jassal contributed equally to this work.

Authors and Affiliations

  1. Engineering and Applied Sciences Program, University of Massachusetts Dartmouth, 285 Old Westport Road, Dartmouth, MA, 02747, USA

    Tabish Nawaz

  2. Biomedical Engineering and Biotechnology Program, University of Massachusetts Dartmouth, 285 Old Westport Road, Dartmouth, MA, 02747, USA

    Manisha Jassal

  3. Civil and Environmental Engineering Department, University of Massachusetts Dartmouth, 285 Old Westport Road, Dartmouth, MA, 02747, USA

    Sukalyan Sengupta

  4. Mechanical Engineering Department, University of Massachusetts Dartmouth, 285 Old Westport Road, Dartmouth, MA, 02747, USA

    Sankha Bhowmick

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  1. Tabish Nawaz
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  2. Manisha Jassal
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  3. Sukalyan Sengupta
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  4. Sankha Bhowmick
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Corresponding author

Correspondence to Sukalyan Sengupta.

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We disclose no conflict of interest arising out of this work.

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Nawaz, T., Jassal, M., Sengupta, S. et al. Functional group penetration thickness and intraparticle diffusivity of electrospun poly(acrylonitrile) ion-exchange fibers. Colloid Polym Sci 295, 2069–2075 (2017). https://doi.org/10.1007/s00396-017-4159-9

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  • DOI: https://doi.org/10.1007/s00396-017-4159-9

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