Effect of flow rate on wetting and optical properties of electrospun poly(vinyl acetate) micro-fibers
- 114 Downloads
In this work, extremely hydrophobic micro-fibers from polyvinyl acetate (PVAc) were obtained by changing the flow rate of the solution in electrospinning process. Surface morphologies and wettability of the fiber surfaces were strongly affected from the flow rate of the electrospinning solutions; it was found that with the increase of flow rates from 2 to 5 mL/h, the diameters of the fibers have shown an increase from 3.22 to 4.75 μm, and also water contact angle (CA) values were increased up to 146°. Equilibrium (θe) and advancing (θa) CA results showed us that fiber surfaces become extremely hydrophobic in the case of 4 mL/h and 5 mL/h solution flow rates and CA values were measured 148° and 161°, respectively. Increase in flow rates has changed the optical transmittance values; PVAc fibers have shown lower light transmittance and poor transparency at higher flow rates. When flow rates were increased from 2 to 5 mL/h, the transmittance values have shown a decrease from 3 to 0.25% and 2.5 to 0.25%, at 400 nm and 700 nm, respectively.
KeywordsElectrospinning Flow rate Optical properties PVAc fibers Super hydrophobic
The authors would like to thank YTU Science and Technology Research Center for SEM analyses, and Mr. Bahadır BAYRAK and Fatih AKGÜL from TERRALAB for AFM measurements.
Compliance with ethical standards
Conflicts of interest
The authors declare that there is no conflict of interest regarding the publication.
- 3.Lasoski S, Kraus G (1955) Polymer to metal adhesion. The system polyvinyl acetate–steel. J Polym Sci A Polym Chem 18(89):359–376Google Scholar
- 5.Doménech-Carbó MT, Silva MF, Aura-Castro E, Fuster-López L, Kröner S, Martínez-Bazán ML, Más-Barberá X, Mecklenburg MF, Osete-Cortina L, Doménech A (2011) Study of behaviour on simulated daylight ageing of artists’ acrylic and poly (vinyl acetate) paint films. Anal Bioanal Chem 399(9):2921–2937CrossRefGoogle Scholar
- 7.Lee J-B, Park S-H, Kim S-S (2017) Physical properties of polymer-modified cement mortars by the functional additives and modification of polymerization. J Ceram Process Res 18(3):220–229Google Scholar
- 10.Jannesari M, Varshosaz J, Morshed M, Zamani M (2011) Composite poly (vinyl alcohol)/poly (vinyl acetate) electrospun nanofibrous mats as a novel wound dressing matrix for controlled release of drugs. Int J Nanomedicine 6:993Google Scholar
- 23.Sill T J, von Recum H A (2008) Electrospinning: applications in drug delivery and tissue engineering. Biomaterials 29 (13): 1989–2006Google Scholar