Background: As a new type of micron/nanofiber preparation technology, solutionblowing
has attracted more and more attention and applied in wide application field. Compared with
electrospinning, it has such advantages as simple equipment, easy accessibility and low energy consumption.
Objective: In this paper, the modified poly(arylene ether sulfone) polymers are expected to be prepared
and converted into nanofibers via solution-blowing technology, and can be applied in microfiltration
and oil-water separation.
Methods: We synthesized a series of linear high molecular weight ternary poly(arylene ether sulfone)
via adding different content of phthalein group, and then successfully fabricated the corresponding
nanofibers via solution-blowing technology. The concentration of spinning solution was
optimized to obtain the uniform and smooth nanofibers. The membranes were characterized by
Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), Wide-angle
X-ray diffraction (WAXD), Differential scanning calorimetry (DSC), Thermogravimetric analysis
(TGA), and Water contact angle (WCA), etc. Furthermore, the filtration experiment and oil-water
separation test were executed to verify the membranes practical application value.
Results: The results showed the spinning solution with polymers concentration of 25 wt% was suitable
to prepare nanofibers with well appearance and the membranes had a higher glass transition temperature
(Tg) and better thermal stability with the increase content of phthalein groups. The oil-water
separation experiments of membranes showed fast and efficient separation ability for oil-water mixtures
at special scale.
Conclusion: The nanofibrous membranes of modified poly (arylene ether sulfone) with cardo group
in the main chain were successfully prepared via solution-blowing technology and exhibited great
application potential in microfiltration.