Počet záznamů: 1  

The influence of sonication of poly(ethylene oxide) solutions to the quality of resulting electrospun nanofibrous mats

  1. 1.
    0456425 - UH-J 2017 RIV NL eng J - Článek v odborném periodiku
    Peer, Petra - Filip, Petr - Polášková, M. - Kucharczyk, P. - Pavlínek, V.
    The influence of sonication of poly(ethylene oxide) solutions to the quality of resulting electrospun nanofibrous mats.
    Polymer Degradation and Stability. Roč. 126, April (2016), s. 101-106. ISSN 0141-3910
    Institucionální podpora: RVO:67985874
    Klíčová slova: electrospinning * nanofibres * poly(ethylene oxide) * sonication * degradation
    Kód oboru RIV: BK - Mechanika tekutin
    Impakt faktor: 3.386, rok: 2016

    The quality of electrospun nanofibrous mats is significantly subject to the preparation method of entry
    polymer solutions whose homogenization is usually carried out by magnetic stirring, vibrational shaking,
    sonication or their combination. Among them, an application of sonication can lead to remarkable
    changes of solution characteristics accompanying polymer degradation. This is further propagated in
    morphological changes of the corresponding electrospun nanofibrous mats. This contribution evaluates
    these changes for the solutions of poly(ethylene oxide) (PEO) in water in dependence on concentration
    and time of sonication. To this aim, the measurements of rheological characteristics, conductivity and
    surface tension were carried out, and GPC (gel permeation chromatography) and SEM (scanning electron
    microscopy) techniques were applied. As the mean diameter of electrospun nanofibres is proportional to
    the value of viscosity, a master curve for viscosity regarding time of sonication and PEO concentration
    was proposed.
    Trvalý link: http://hdl.handle.net/11104/0256972
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