Mele_Paper_Rev_.pdf (1.93 MB)
Phase separation events induce the coexistence of distinct nanofeatures in electrospun fibres of poly(ethyl cyanoacrylate) and polycaprolactone
© 2018 Elsevier Ltd Here we show that thermodynamic instabilities during electrospinning of polymer blends of poly(ethyl cyanoacrylate) (PECA) and polycaprolactone (PCL) in a ternary solvent system (acetone/chloroform/acetonitrile) induce the formation of hierarchical composite fibres with dual porosity. The analysis of the surface and cross-section of the PECA-PCL fibres reveals that, differently from previous works, the electrospun fibres are formed of two distinct morphologies: half of the fibre exhibits parallel and elongated grooves; whereas the other half has near-circular shaped pores. Porosity is present throughout the fibre volume with some regions being hollow. The occurrence of this novel architecture is investigated using different solvent systems and a dual phase separation mechanism is proposed. Porous fibres with a hierarchical porous structure are beneficial in many fields, including biomedical, environmental and energy related applications.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Materials
Published in
Materials Today CommunicationsVolume
16Pages
135 - 141Citation
ZHANG, W. and MELE, E., 2018. Phase separation events induce the coexistence of distinct nanofeatures in electrospun fibres of poly(ethyl cyanoacrylate) and polycaprolactone. Materials Today Communications, 16, pp. 135-141.Publisher
© ElsevierVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2018Notes
This paper was accepted for publication in the journal Materials Today Communications and the definitive published version is available at https://doi.org/10.1016/j.mtcomm.2018.05.005ISSN
2352-4928eISSN
2352-4928Publisher version
Language
- en