Characterization of the thermoresponsive shape-memory effect in poly(ether ether ketone) (PEEK)

2013 ◽  
Vol 131 (3) ◽  
pp. n/a-n/a ◽  
Author(s):  
Xue Lian Wu ◽  
Wei Min Huang ◽  
Zhen Ding ◽  
Hui Xin Tan ◽  
Wen Guang Yang ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Ether Ketone

Synthesis and characterization of biodegradable, amorphous, soft IPNs with shape-memory effect

2011 ◽  
Vol 23 (3) ◽  
pp. 382-388 ◽  
Author(s):  
Yakai Feng ◽  
Haiyang Zhao ◽  
Licai Jiao ◽  
Jian Lu ◽  
Heyun Wang ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Synthesis And Characterization

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

scholarly journals Microstructure Formation in Cast TiZrHfCoNiCu and CoNiCuAlGaIn High Entropy Shape Memory Alloys: A Comparison

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4227 ◽  
Author(s):  
Tetiana A. Kosorukova ◽  
Gregory Gerstein ◽  
Valerii V. Odnosum ◽  
Yuri N. Koval ◽  
Hans Jürgen Maier ◽  
...  
Keyword(s):  
Martensitic Transformation ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Microstructure Characterization ◽  
Microstructure Formation ◽  
High Entropy

The present study is dedicated to the microstructure characterization of the as-cast high entropy intermetallics that undergo a martensitic transformation, which is associated with the shape memory effect. It is shown that the TiZrHfCoNiCu system exhibits strong dendritic liquation, which leads to the formation of martensite crystals inside the dendrites. In contrast, in the CoNiCuAlGaIn system the dendritic liquation allows the martensite crystals to form only in interdendritic regions. This phenomenon together with the peculiarities of chemical inhomogeneities formed upon crystallization of this novel multicomponent shape memory alloys systems will be analyzed and discussed.

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