We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Evaluation of electrospun nanofiber formation of perfluorosulfonic acid and poly (N-vinylpyrrolidone) through solution rheology.
- Authors
Junhong Zhao; Anhou Xu; Wang Zhang Yuan; Jianbing Gao; Junke Tang; Li Wang; Fei Ai; Yongming Zhang
- Abstract
Electrospinning performance of 5-52 wt% perfluorosulfonic acid (PFSA), poly (N-vinylpyrrolidone) (PVP), and PFSA/PVP blends in N,N-dimethylformamide (DMF) with various PFSA/PVP ratios were systematically investigated in respective of solutions properties, mainly surface tension and rheological properties. Mechanical relaxation time τM calculated from rheological results happens to be closely correlated with nanofiber morphology, and is used to evaluate the electrospinnability. Polymer solutions with higher τM show better electrospinnability. Morphologies of the electrospun samples were observed by Scanning electronic microscopy. The results show that the pure PFSA solutions, even with a quite high concentration up to 52 wt%, fail to be electrospun and possess a very low τM. Addition of PVP improves electrospinnability of PFSA and increases τM. The electrospinnability of PFSA/PVP/ DMF solutions can be manipulated by changing the ratio of PFSA to PVP and the total polymer concentration of the mixed solutions. The PFSA nanofiber mats with a small fraction of PVP (<8 wt%) with the average diameter of 370 nm were successfully obtained.
- Subjects
RHEOLOGY; SULFONIC acids; SURFACE tension; POLYMERS; SCANNING electron microscopy
- Publication
Journal of Materials Science, 2011, Vol 46, Issue 23, p7501
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-011-5721-3