Process of needleless electrospinning and morphology of nanofibers thereof

The present work was undertaken with a view to investigating the preparation of nanofibers by needleless electrospinning,including the development of the process,the morphology of the nanofibers so produced and determination of working parameters.The aqueous solution of polyvinyl alcohol(PVA) was used to make the nanofiber mat.The experiment results indicated that the solution concentration and working voltage should surpass a threshold to carry out the process smoothly,and the diameter varies with the distance from feeding roller to collection plate(D from FR to CP).When D from FR to CP is adjusted from 12 to 14 and then 16 cm,the corresponding average diameter of nanofibers becomes 165 nm,219 nm,141 nm and standard deviation(SD),49 nm,62 nm,40 nm,respectively.Besides,no beads on surface is observed and PVA nanofibers exhibit uniform distribution.