Ph.D Iuliana G. LUPU, Ph.D Oana CRAMARIUC, Ph.D Liliana HRISTIAN, Ph.D. Nicanor CIMPOEȘU, Ph.D Marian C. GROSU
Rezumat
În această lucrare au fost investigaţi doi parametri importanţi ai procesului de electrofilare și anume debitul și distanţa dintre vârful acului și colector, folosind o soluţie polimerică PEO/etanol și apă. Analiza SEM a relevat faptul că fibrele electrofilate prezintă o morfologie uniformă cu o distibuţie îngustă a diametrului fibrelor. Influenţa distanţei vârf-colector respectiv a debitului asupra diametrului fibrelor electrofilate a fost investigată folosind analiza statistică. Astfel, analiza a indicat o dependenţă liniară între parametrii procesului și diametrul fibrelor. Acest lucru înseamnă că, odată cu creșterea distanţei vârf-colector diametrul fibrei scade în timp ce creșterea debitului conduce la creșterea diametrului fibrelor electrofilate.
Cuvinte cheie: electrofilareoxid de polietilenăanaliză statistică.
Abstract
In this paper, we have studied two important parameters of the electrospinning process, including needle-tip-to-collector distance, and flow rate by using using PEO/ethanol and water polymer solutions. Scanning electron microscopy (SEM) analysis showed that the electrospun fibers have relatively uniform morphologies with a narrow fiber diameter distribution. The effect of tip-collector distance and flow rate on the fiber diameter was investigated by using statistical analysis. This revealed a liniar dependency between process parameters and fiber diameter. This means that with increasing distance tip-collector the fiber diameter is decreasing while with increasing of flow rate the fiber diameter is increasing.
Keywords: electrospinningpolyethylene oxidestatistical analysis
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