Results 151 to 160 of about 6,593 (202)
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Macromolecular Rapid Communications, 1996
AbstractStructures of poly(ether ether ketone ketone)‐poly(ether biphenyl ether ketone ketone) copolymers were studied by using small angle X‐ray scattering and the one‐dimensional electron density correlation function method. The results revealed that structures of the aggregated state of the copolymers depend closely on the biphenyl content (nb ...
Hongfang Zhang +4 more
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AbstractStructures of poly(ether ether ketone ketone)‐poly(ether biphenyl ether ketone ketone) copolymers were studied by using small angle X‐ray scattering and the one‐dimensional electron density correlation function method. The results revealed that structures of the aggregated state of the copolymers depend closely on the biphenyl content (nb ...
Hongfang Zhang +4 more
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Macromolecular Chemistry and Physics, 1996
AbstractThermal properties of poly(ether ether ketone ketone) (PEEKK)/poly(ether biphenyl ether ketone ketone) (PEDEKK) copolymers were investigated by means of differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The glass transition temperature (Tg) increases from 154°C to 183°C as the content of PEDEKK units increases.
Mitsuhiro Shibata +4 more
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AbstractThermal properties of poly(ether ether ketone ketone) (PEEKK)/poly(ether biphenyl ether ketone ketone) (PEDEKK) copolymers were investigated by means of differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The glass transition temperature (Tg) increases from 154°C to 183°C as the content of PEDEKK units increases.
Mitsuhiro Shibata +4 more
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Journal of Applied Polymer Science, 2010
AbstractA new monomer, N,N′‐bis(4‐phenoxybenzoyl)‐m‐phenylenediamine (BPPD), was prepared by condensation of m‐phenylenediamine with 4‐phenoxybenzoyl chloride in N,N‐dimethylacetamide (DMAc). A series of novel poly(ether amide ether ketone) (PEAEK)/poly(ether ketone ketone) (PEKK) copolymers were synthesized by the electrophilic Friedel‐Crafts solution
Bin Huang, Meihua Zhu, Mingzhong Cai
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AbstractA new monomer, N,N′‐bis(4‐phenoxybenzoyl)‐m‐phenylenediamine (BPPD), was prepared by condensation of m‐phenylenediamine with 4‐phenoxybenzoyl chloride in N,N‐dimethylacetamide (DMAc). A series of novel poly(ether amide ether ketone) (PEAEK)/poly(ether ketone ketone) (PEKK) copolymers were synthesized by the electrophilic Friedel‐Crafts solution
Bin Huang, Meihua Zhu, Mingzhong Cai
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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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Polymer International, 2010
AbstractPoly(aryl ether ketone)s (PAEKs) are a class of high‐performance engineering thermoplastics known for their excellent combination of chemical, physical and mechanical properties, and the synthesis of semicrystalline PAEKs with increased glass transition temperatures (Tg) is of much interest. In the work reported, a series of novel copolymers of
Jianwen Jiang +2 more
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AbstractPoly(aryl ether ketone)s (PAEKs) are a class of high‐performance engineering thermoplastics known for their excellent combination of chemical, physical and mechanical properties, and the synthesis of semicrystalline PAEKs with increased glass transition temperatures (Tg) is of much interest. In the work reported, a series of novel copolymers of
Jianwen Jiang +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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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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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
openaire +1 more source