基于沉浸式无针静电纺丝设备的单因素实验分析OA

An immersive linear needle-free electrospinning apparatus is independently constructed.Polyvinyl alcohol(PVA)is used as the model polymer solution for electrospinning.With other parameters fixed,the effects of solution concentration(9%～12%),applied voltage(42～48 kV),spinning distance(12～18 cm)and electrode wire diameter(0.2～0.4 mm)on the mean fiber diameter(MFD)are investigated sequentially.It is found that the mean fiber diameter is increased with increasing solution concentration and applied voltage,and is decreased with increasing spinning distance and electrode wire diameter.Among these factors,the effect of solution concentration is the most significant.A mathematical model is established and analyzed by analysis of variance(ANOVA)with Design-Expert,and the model is verified to be significant(p<0.000 1).SEM results demonstrate that PVA nanofibers with uniform diameter distribution(RSD 16.64%～28.71%)are obtained.This study provides an experimental basis for optimizing needle-free electrospinning parameters and controlling nanofiber morphology.