scholarly journals Molecular dynamics and microstructure development during cold crystallization in poly(ether-ether-ketone) as revealed by real time dielectric and x-ray methods

2001 ◽  
Vol 115 (8) ◽  
pp. 3804-3813 ◽  
Author(s):  
A. Nogales ◽  
T. A. Ezquerra ◽  
Z. Denchev ◽  
I. Šics ◽  
F. J. Baltá Calleja ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Real Time ◽  
Cold Crystallization ◽  
Microstructure Development ◽  
X Ray ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Ether Ketone ◽  
Ray Methods

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.

A Study on Acidification and Intercalation of Illite Clay Minerals and their Potential Use as a Filler in SPEEK Composite Membranes

2018 ◽  
Vol 762 ◽  
pp. 186-191
Author(s):  
Anna Trubača-Boginska ◽  
Rūta Ādiņa ◽  
Guntars Vaivars ◽  
Janis Švirksts
Keyword(s):  
Proton Exchange Membrane ◽  
Composite Membranes ◽  
Proton Exchange ◽  
X Ray ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Conductivity Water ◽  
Ether Ketone ◽  
Exchange Membrane ◽  
Potential Use

The acidification and intercalation of illite containing clays were studied for potential use as fillers for sulphonated poly (ether ether ketone) (SPEEK) composite membrane preparation and future proton exchange membrane fuel cells application. The acidification and dimethyl sulfoxide (DMSO) intercalation of illite clays have been studied by powder X-ray diffractometry, X-ray fluorescence spectrometry, and thermogravimetric analysis. SPEEK composite membranes were made with 1, 3 and 5% purified, acidified, DMSO intercalated clay fillers. SPEEK/clay composite membranes were characterized by proton conductivity, water uptake, and mechanical strength.

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