One-pot synthesized poly(vinyl pyrrolidone-co-methyl methacrylate-co-acrylic acid) blended with poly(ether sulfone) to prepare blood-compatible membranes

2013 ◽  
pp. n/a-n/a ◽  
Author(s):  
Jie Li ◽  
Shengqiang Nie ◽  
Lingren Wang ◽  
Shudong Sun ◽  
Fen Ran ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Methyl Methacrylate ◽  
Vinyl Pyrrolidone ◽  
One Pot ◽  
Poly Vinyl Pyrrolidone

Fabrication of Zirconia Nanofibers Using Zirconatrane Synthesized by Oxide One-Pot Process as Precursor

2008 ◽  
Vol 55-57 ◽  
pp. 605-608 ◽  
Author(s):  
M. Panapoy ◽  
Bussarin Ksapabutr
Keyword(s):  
Composite Nanofibers ◽  
Low Cost ◽  
Sol Gel ◽  
Zirconium Hydroxide ◽  
Alcoholic Solution ◽  
Vinyl Pyrrolidone ◽  
One Pot ◽  
Average Width ◽  
Different Temperatures ◽  
Poly Vinyl Pyrrolidone

Zirconia nanofibers were fabricated from alcoholic solution containing zirconatrane and poly(vinyl pyrrolidone) (PVP) using electrospinning and sol-gel process with subsequent calcination process. A low-cost and facile route to synthesize zirconatrane complex, which can be further employed as alkoxide precursor for zirconia or doped zirconia via sol-gel technique, has been developed from the reaction of a very inexpensive and plentiful starting materials via the oxide one-pot synthesis (OOPS) process. Zirconatrane complex was directly synthesized from zirconium hydroxide, triethanolamine and ethylene glycol. The structure of resultant products was fully characterized using FTIR, 1H, 13C-NMR, elemental analysis (EA), and mass spectroscopy (MS). The PVP/zirconia composite nanofibers were electrospun and calcined at different temperatures. The as-electrospun and heat-treated PVP/zirconia composite nanofibers were characterized using TGA, XRD and SEM. After calcination of the as-spun composite fibers at 600oC for 5 h, zirconia nanofibers of about 190 nm in diameter having tetragonal structure were obtained. Increasing the calcination temperature resulted in the formation of zirconia fibers with ribbon-like morphology having an average width of 600 nm and thickness of 140 nm.

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