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An electrorheological investigation of PVB solutions in connection with their electrospinning qualities

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    0430267 - ÚH 2015 RIV GB eng J - Článek v odborném periodiku
    Peer, Petra - Stěnička, M. - Pavlínek, V. - Filip, Petr - Kuřitka, I. - Brus, Jiří
    An electrorheological investigation of PVB solutions in connection with their electrospinning qualities.
    Polymer Testing. Roč. 39, October (2014), s. 115-121. ISSN 0142-9418. E-ISSN 1873-2348
    Grant CEP: GA ČR(CZ) GAP105/11/2342
    Institucionální podpora: RVO:67985874 ; RVO:61389013
    Klíčová slova: electrospinning * nanofibres * polyvinylbutyral * electrorheology * polymer solution
    Kód oboru RIV: BK - Mechanika tekutin; CD - Makromolekulární chemie (UMCH-V)
    Impakt faktor: 2.240, rok: 2014

    During the process of electrostatic spinning, the rheological behaviour of polymer solutions is significantly influenced by the presence of an external electric field. The aim of this contribution is to find a correlation between the electrorheological characteristics of polyvinylbutyral (PVB) solutions and their electrostatic spinnability. When exposed to an external electric field, PVB solutions with either poor or good solvents respond in different ways. It was shown that the complex viscosity ratio hE*/h0* (where hE* and h0* represent complex viscosities of a solution in the presence and absence of an external electric field, respectively) can serve as an indicator as to whether a chosen material is a potential candidate for acceptable electrospinning. This occurs when the ratio hE*/h0* increases with increasing electric field strength, i.e., when poor solvents are applied. The possible changes to the physical and chemical properties of PVB solutions were investigated using SEM, FTIR, DSC, 13C- and 1H-NMR techniques.
    Trvalý link: http://hdl.handle.net/11104/0235697

     
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