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    Functional sol-gel coated electrospun polyamide 6,6/ZnO composite nanofibers
    (Walter De Gruyter Gmbh, 2019) Bedeloğlu, Ayşe; Cin, Zeynep Islek
    Polymer-based nanofibers are good candidates for medical textiles due to their excellent properties including high surface area, breathability and flexibility. Doping polymer nanofibers with different nanoparticles enhances their existing properties. In this study, electrospun polyamide 6,6 (PA6,6) composite nanofibers containing ZnO nanoparticles (<50 nm) in different amounts (1%, 3% and 5%) were first produced by electrospinning technique; then, these nanofibers were coated with sol-gel ZnO solution (0.5 M) via dip coating method at 1000, 3000 and 5000 mu m/s speeds. The sol-gel coating process increased the breaking strength of nanofiber mats, while the incorporation of ZnO nanoparticles into the polymer nanofibers reduced. Compared to pure PA6,6 nanofiber mats, the ZnO sol-gel coated samples and doped nanofibers had lower reflectance values. In addition, the reflection values decreased as the additive and coating speed increased.
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    Manufacturing and morphology of poly(epsilon-caprolactone) based microfibre webs for biomedical applications through airbrush technique
    (Natl Inst Science Communication-Niscair, 2017) Bedeloğlu, Ayşe; Bhullar, Sukhwinder Kaur; Borazan, Ismail; Cin, Zeynep Islek; Demir, Ali
    The objective of this study is to fabricate poly(epsilon-caprolactone) (PCL)-based micro/nano fibrous structures by using different types of solvents and nozzle sizes and to investigate the morphology of fabricated airbrushed structures for future biomedical applications. It is observed from the morphology and diameter of micro/nanofibres structures based on nozzle size, concentration of PCL and solvents, that these airbrushed biocompatible and biodegradable webs offer a potential in the medical field requiring direct, rapid and conformable applications.