Çevresel parametrelerin elektrospin yöntemiyle üretilmiş polieterimid liflerinin morfolojisi üzerindeki etkileri

Elektrospin yöntemi, birkaç mikrometreden 100 nanometrenin altlarına kadar farklı çaplarda lif üretimi sağlayan bir metottur. Bu çalışmada ortam sıcaklığı ve bağıl nemin, elektrospin yöntemiyle üretilen polieterimid (PEI) liflerinin morfolojisi üzerindeki etkileri araştırılmıştır. Çözücü olarak 1-metil 2-pirolidon (NMP) kullanılmıştır. Elektrospin yöntemiyle üretilen PEI liflerinin yüzey morfolojileri ve çapları Alan Emisyonlu Taramalı Elektron Mikroskobu (FESEM) ile analiz edilmiştir. Elde edilen deneysel sonuçlara göre tüm sıcaklık değerleri için bağıl nemin artmasıyla ortalama PEI lif çapları artmaktadır. Ortam sıcaklığının artmasıyla ortalama PEI lif çaplarının azaldığı görülmüştür. Liflerin yüzey pürüzlülükleri, bağıl nemin artmasıyla artmıştır. Elde edilen tüm PEI liflerinin kesit şekillerinin dairesel olduğu gözlemlenmiştir.

Effect of ambient parameters on morphology of electrospun polyetherimide (pei) fibers

Electrospinning is a method that produces fibers with diameters ranging from a few micrometers down to under hundred nanometers. In this study, the influence of temperature and relative humidity on the morphology of electrospun polyetherimide (PEI) fibers is investigated. 1-methyl-2-pyrrolidinone (NMP) is used as a solvent. Surface morphologies and diameters of electrospun PEI fibers are examined by Field-Emission Scanning Electron Microscopy (FESEM). The experimental results show that average diameter of electrospun PEI fibers increases with increasing relative humidity at all ambient temperatures. As the temperature increase, average diameter of electrospun PEI fibers decreases. Surface roughness of the fibers increases with increasing of RH. The whole of the electrospun PEI fibers obtained are circular shaped.

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