Journal
RSC ADVANCES
Volume 6, Issue 94, Pages 91243-91249Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra17097h
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Funding
- National Natural Science Foundation of China [51673148]
- National Basic Research Program of China [2014CB660813]
- National Key Technology Support Program [2015BAE01B03]
- Innovation Fund for Technology of China [14C26211200298]
- Innovation Fund for Technology of Tianjin [14ZXCXGX00776]
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A novel polyvinylidene fluoride (PVDF) tree-like nanofiber web was successfully fabricated via one-step electrospinning. The effect of the tree-like structure on the pore size distribution and specific surface area were measured, and the filtration properties of the tree-like nanofiber webs with different basis weights were investigated. The results showed that the tree-like structure significantly decreased the pore size and narrowed the range of pore size distribution, and dramatically enhanced the specific surface area. In comparison with common PVDF nanofiber webs, the tree-like nanofiber webs exhibited excellent filtration performance. The filtration efficiency of the tree-like nanofiber webs with the basis weight of 1 g m(-2) to 0.26 mu m NaCl particles was 99.999% and the pressure drop was only 124.2 Pa which was comparable to ultra low penetration air filters (ULPA). The tree-like nanofiber webs will be widely used in the field of high efficiency and precision filter materials and medical protective materials.
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