Results 201 to 210 of about 31,941 (245)
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Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2021
Poly(ether ether ketone) is a semicrystalline organic polymer. It has widely been used as high-performance engineering plastic owing to its high melting point (343 °C), excellent mechanical strength, and outstanding chemical resistance. Therefore, poly(ether ether ketone) and its composites have shown lots of applications in aerospace and medical ...
Sangli Senkathir +2 more
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Poly(ether ether ketone) is a semicrystalline organic polymer. It has widely been used as high-performance engineering plastic owing to its high melting point (343 °C), excellent mechanical strength, and outstanding chemical resistance. Therefore, poly(ether ether ketone) and its composites have shown lots of applications in aerospace and medical ...
Sangli Senkathir +2 more
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Anomalous diffusion in poly-ether-ether-ketone
Chemical Engineering Science, 1994Poly-ether-ether-ketone (PEEK) is a thermoplastic tough polymer used as a matrix for advanced composite materials in aeronautic applications. The investigation of its resistance to humid environment and to exposure to organic and chlorinated solvents is extremely important.
M. A. Del Nobile +3 more
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Polymers and Polymer Composites, 1996
The thermal and viscoelastic behaviour and mechanical properties of blends of poly(ether ether ketone ketone) (PEEKK) with poly(ether sulphone) (PES) have been investigated. Additionally, poly(ether ether ketone) (PEEK) oligomer was added as the third component to the above blend in order to improve its compatibility and mechanical properties.
Mitsuhiro Shibata +2 more
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The thermal and viscoelastic behaviour and mechanical properties of blends of poly(ether ether ketone ketone) (PEEKK) with poly(ether sulphone) (PES) have been investigated. Additionally, poly(ether ether ketone) (PEEK) oligomer was added as the third component to the above blend in order to improve its compatibility and mechanical properties.
Mitsuhiro Shibata +2 more
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Thermoreversible Gelation of Poly(ether ether ketone)
ACS Macro Letters, 2017Solutions of poly(ether ether ketone) in dichloroacetic acid have been shown to form monolithic, thermoreversible gels at temperatures ranging from 10 to 140 °C. A phase diagram was constructed over broad concentration and temperature ranges, and the phase boundary suggests an upper critical solution temperature (UCST) behavior. Furthermore, poly(ether
Samantha J. Talley +2 more
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Polymer Engineering & Science, 2013
New monomers, 4,4′‐bis(4‐phenoxybenzoyl)diphenyl (BPOBDP) and N,N′‐bis(4‐phenoxybenzoyl)−4,4′‐diaminodiphenyl ether (BPBDAE), were conveniently synthesized via simple synthetic procedures from readily available materials. Novel copolymers of poly(ether ketone diphenyl ketone ether ketone ketone) (PEKDKEKK) and poly(ether amide ether amide ether ketone ...
Bin Huang +3 more
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New monomers, 4,4′‐bis(4‐phenoxybenzoyl)diphenyl (BPOBDP) and N,N′‐bis(4‐phenoxybenzoyl)−4,4′‐diaminodiphenyl ether (BPBDAE), were conveniently synthesized via simple synthetic procedures from readily available materials. Novel copolymers of poly(ether ketone diphenyl ketone ether ketone ketone) (PEKDKEKK) and poly(ether amide ether amide ether ketone ...
Bin Huang +3 more
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Polymers and Polymer Composites, 1999
The effect on compatibility of the addition of poly(ether ether ketone) (PEEK) oligomer to poly(ether ether ketone ketone) (PEEKK)/polv(p-phenylene sulphide) (PPS) blends has been investigated. Viscoelastic measurements and differential scanning calorimetry (DSC) of PEEKK/PPS blends show that the blends are completely immiscible over the whole ...
Zhijie Fang +3 more
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The effect on compatibility of the addition of poly(ether ether ketone) (PEEK) oligomer to poly(ether ether ketone ketone) (PEEKK)/polv(p-phenylene sulphide) (PPS) blends has been investigated. Viscoelastic measurements and differential scanning calorimetry (DSC) of PEEKK/PPS blends show that the blends are completely immiscible over the whole ...
Zhijie Fang +3 more
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Journal of Mathematical Modeling and Fractional Calculus
Organic chemistry constantly pushes the boundaries by synthesizing new molecules each year. However, before these compounds can be practically used, rigorous testing is needed to understand their characteristics. This process can be expensive and time-consuming, requiring specialized laboratory equipment, chemicals, and personnel.
Umar Farooq, Faryal Chaudhry
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Organic chemistry constantly pushes the boundaries by synthesizing new molecules each year. However, before these compounds can be practically used, rigorous testing is needed to understand their characteristics. This process can be expensive and time-consuming, requiring specialized laboratory equipment, chemicals, and personnel.
Umar Farooq, Faryal Chaudhry
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The crystallinity of poly(ether ether ketone)
Polymer, 1992Abstract Differences have been observed between the enthalpies of crystallization and fusion of quenched ‘amorphous’ poly(ether ether ketone) (PEEK) which have been attributed to residual crystallinity produced during quenching. Comparison with samples of PEEK crystallized under well defined conditions reveals that these apparent differences arise ...
A.A. Mehmet-Alkan, J.N. Hay
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Synthesis and properties of poly(ether ether ketone ketone)‐poly(ether sulfone) block copolymers
Journal of Applied Polymer Science, 1996Poly(ether ether ketone ketone)-poly(ether sulfone) (PEEKK/PES) block copolymers were prepared from the corresponding oligomers via a nucleophilic aromatic substitution reaction, and the M n of the PEEKK segment was fixed at 12,000, while the M n 's of the PES segment ranged from 250 to 12,680.
Junkui Cao +3 more
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The Semicrystalline Morphology of Poly(ether−ether−ketone) Blends with Poly(ether−imide)
Macromolecules, 1998The microstructure of cold-crystallized poly(ether- ether-ketone)/poly(ether-imide) (PEEK/ PEI) blends has been investigated by a combination of wide- and small- angle X-ray scattering (SAXS), dielectric spectroscopy, and transmission electron microscopy.
Jonas, Alain +2 more
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