Abstract: The PVP organic nanofibers prepared by electrospinning was plated with Ni by magnetron sputtering, so as to prepare the Ni/PVP composite fibers and study the effect of plating on the stability of PVP fibers under complex environmental conditions. Results indicated that in the process of magnetron sputtering coating, with the increase of time, the thickness and time of the composite fiber can be expressed as a function. Then, the filtration tests were performed on the prepared composite nanofibers by its filtration of 200 ～ 700 nm particle size to study the filtration performance of the fibers; and the stability of PVP fiber and composite fiber was studied by static treatment, long-term immersion, and different-temperament heat treatment. In the filtration test, Ni/PVP composite nanofibers achieved 99.76% filtration efficiency in the case of 300 nm particle size, which is the most easily tunneling particle size. In addition, in the extreme environmental stability test, after deionized water immersion test and high-temperature heat treatment test, the composite fiber maintained the original structure and morphology, and the inner PVP was not damaged.

Key words: electrospinning; magnetron sputtering; particle filtration; Ni/PVP composite fiber