Preparation and characterization of positively charged composite nanofiltration membranes by coating poly(ether ether ketone) containing quaternary ammonium groups on polysulfone ultrafiltration membranes

2012 ◽  
Vol 127 (3) ◽  
pp. 1601-1608 ◽  
Author(s):  
Jing Wang ◽  
Junhua Wang ◽  
Haifeng Wang ◽  
Suobo Zhang
Keyword(s):  
Quaternary Ammonium ◽  
Nanofiltration Membranes ◽  
Ultrafiltration Membranes ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Ether Ketone ◽  
Positively Charged

Macromolecular covalently cross-linked quaternary ammonium poly(ether ether ketone) with polybenzimidazole for anhydrous high temperature proton exchange membranes

2014 ◽  
Vol 5 (17) ◽  
pp. 4939-4947 ◽  
Author(s):  
Na Zhang ◽  
Chengji Zhao ◽  
Wenjia Ma ◽  
Shuang Wang ◽  
Baolong Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Phosphoric Acid ◽  
Quaternary Ammonium ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Ether Ketone ◽  
Improved Performance

The phosphoric acid doped quaternary ammonium poly(ether ether ketone) membranes cross-linked with PBI showed improved performance.

scholarly journals Synthesis and Characterization of alumina nanofiber reinforced Poly ether ether ketone (PEEK)

2014 ◽  
Vol 7 (2) ◽  
Author(s):  
Tg Mahizatulazwa Tg Kamaruddin ◽  
Liew Kong Yong ◽  
Mohd Ridzuan Noordin
Keyword(s):  
Degree Of Crystallinity ◽  
Nano Composites ◽  
Scanning Electron Micrographs ◽  
X Ray ◽  
Alumina Nanofibers ◽  
Transmission Electron ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Ether Ketone

The effects of reinforcing Poly ether etherketone (PEEK) with alumina nanofiber have been studied. The nano-composites were prepared by first dispersing the fibre in solvent and then undertaking the synthesis of PEEK. Nanocomposite materials with 1wt.%, 2.5wt.% and 5wt.% of alumina nanofiber have been prepared successfully by dispersing the alumina nanofiber in Sulfolane as solvent and upon sonication for 30 minutes. Transmission electron microscopy and scanning electron micrographs indicated excellent dispersion and interactions between PEEK matrixes with the added alumina nanofibers. Differential scanning calorimeter shows changes in melting and crystallization point and degree of crystallinity for 1wt.% nanocomposites. The result also indicated that alumina nanofiber serves as nucleating agents in PEEK nanocomposites. The X-ray diffractogram data indicated that the crystallinity of the PEEK nanocomposites was highest for 1wt.% alumina nanofiber. The thermogravimetry analysis, shows that thermal stability for alumina nanofiber/PEEK nano-composites was enhanced compared to that of the pure PEEK.

Characterization of molecular interaionic and intraionic crosslinkable sulfonated poly(ether ether ketone-alt-benzimidazole) membrane

2011 ◽  
Vol 124 (4) ◽  
pp. 3175-3183 ◽  
Author(s):  
Jianli Wang ◽  
Hongfei Yu ◽  
Myong-Hoon Lee ◽  
Shenggang Zhang ◽  
Dehai Wang
Keyword(s):  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Ether Ketone ◽  
Sulfonated Poly
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