Dependence of poly(vinyl butyral) electrospun fibres diameter on molecular weight and concentration

0534567 - ÚH 2023 RIV US eng J - Journal Article
Filip, Petr - Peer, Petra - Zelenková, Jana
Dependence of poly(vinyl butyral) electrospun fibres diameter on molecular weight and concentration.
Journal of Industrial Textiles. Roč. 51, 1_suppl (2022), 1612S-1626S. ISSN 1528-0837. E-ISSN 1530-8057
R&D Projects: GA MŠMT(CZ) LTC19034
Institutional support: RVO:67985874
Keywords : electrospinning * poly(vinyl butyral) * diameter * molecular weight * viscosity
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 3.2, year: 2022
Method of publishing: Limited access
https://journals.sagepub.com/doi/abs/10.1177/1528083720974038

In electrospinning, a proper choice of a mean diameter for electrospun fibres plays a significant role in a number of applications. The diameter is dependent on various entry parameters (concerning polymer, solvent, solution or the process of electrospinning itself) and is qualitatively evaluated based on a series of experiments. However, the studies on quantitative evaluation are rather scarce. The aim of this contribution is to propose and experimentally verify simple algebraic relationships, interlacing the mean diameter, concentration of poly(vinyl butyral) (PVB) dissolved in ethanol, molecular weight, and viscosity. The proposed explicit relationship for evaluating a mean diameter is valid for discrete values of specific molecular weights and is also applicable in continuous ranges of the studied parameters with a mean deviation not exceeding 10 %, where PVB molecular weight is 30-60 kg/mol and PVB concentration is full range. Hence, it also provides the ability to determine optimised values of molecular weight for a chosen mean diameter including a dispersion of its value dependent on dispersion of molecular weights for the individual PVB charges. A direct evaluation of mean diameter can substitute a classical trial-and-error method for determining a required diameter.
Permanent Link: https://hdl.handle.net/11104/0332650