سال انتشار: ۱۳۸۶

محل انتشار: دومین کنفرانس نانوساختارها

تعداد صفحات: ۲

نویسنده(ها):

Faezeh samani, – Polymer Engineering Group, Chemical Engineering Department, Faculty of Engineering
Mehrdad kokabi –

چکیده:

Polyvinyl alcohol (PVA) is a semi-crystalline, hydrophilic polymer with reasonable physical and mechanical properties that has broadly practical applications .Ultra fine PVA fibers which have potential applications in filtration and biomedical engineering can be produced by electrospinning. In this work the process conditions to produce PVA nanofibers were optimized and the effects of various parameters such as electric voltage, tip totarget distance, flow rate and solution parameters on the morphology of nanofibers were investigated. Finally the mechanical properties of fiber mats such as Young’s modulus and tensile strength were evaluated. The results showed that the fiber diameter and morphology were significantly affected by these parameters. The fiber diameter is in the range of 300 to 500 nanometer which decreases with increasing the tip to target distance and electric voltage. It also decreases with decreasing flow rate and solution concentration