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Highly porous polyacrylonitrile/polystyrene nanofibers by electrospinning

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Abstract

The concept of phase separation was coupled with electrospinning to induce polyacrylonitrile (PAN) and polystyrene (PS) bicomponent electrospun fibers that, upon removal of the phase-separated PS domains by solvent extraction, became nanoporous. Electrospinning of PAN (Mw 150 kDa) with 5 % w/w PS (Mw 250 kDa) at a 10 % w/w total concentration in N,N-dimethylformamide (DMF) produced fibers with stable morphology and average diameters from 1130±680 to 890±340 nm by FESEM. The nanoporous fibers made from a 95/5 w/w PAN/PS bicomponent precursor had internal pores of about 20∼110 nanometers. Pore sizes of the porous PAN fibers were decreased to approximately ∼25 nm after oxidation and carbonization thermal treatment because of fiber shrinkage during the thermal treatment. The fibers retained a high density of pores after the thermal treatment.

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Authors and Affiliations

  1. Polymer Science and Engineering Department, Silvio O. Conte National Center for Polymer Research, University of Massachusetts Amherst, Amherst, MA, 01003, USA

    SungCheal Moon & Richard J. Farris

  2. Polymer Science and Engineering Department, Chosun University, Gwangju, 501-759, Korea

    JaeKon Choi

Authors
  1. SungCheal Moon
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  2. JaeKon Choi
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  3. Richard J. Farris
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Correspondence to SungCheal Moon or Richard J. Farris.

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Moon, S., Choi, J. & Farris, R.J. Highly porous polyacrylonitrile/polystyrene nanofibers by electrospinning. Fibers Polym 9, 276–280 (2008). https://doi.org/10.1007/s12221-008-0044-y

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  • DOI: https://doi.org/10.1007/s12221-008-0044-y

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