Relationship between molecular structure and thermal properties of poly(aryl ether ketone)s

1997 ◽  
Vol 18 (2) ◽  
pp. 99-105 ◽  
Author(s):  
Mitsuhiro Shibata ◽  
Ryutoku Yosomiya ◽  
Junzuo Wang ◽  
Yubin Zheng ◽  
Wanjin Zhang ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Thermal Properties ◽  
Aryl Ether ◽  
Aryl Ether Ketone ◽  
Ether Ketone

Comparison of the structure and thermal properties of a poly(aryl ether ketone ether ketone naphthyl ketone) with those of poly(aryl ether ketone ether ketone ketone)

e-Polymers ◽  
2007 ◽  
Vol 7 (1) ◽  
Author(s):  
Marcel Dosière ◽  
Didier Villers ◽  
Mikhail G. Zolotukhin ◽  
Michel H.J. Koch
Keyword(s):  
Glass Transition ◽  
Thermal Properties ◽  
Acid Chloride ◽  
Unit Cell ◽  
Aluminium Chloride ◽  
Aryl Ether ◽  
Orthorhombic Unit Cell ◽  
Melting Temperatures ◽  
Aryl Ether Ketone ◽  
Ether Ketone

AbstractPoly(oxy-1,4-phenylene carbonyl-1,4-phenylene oxy-1,4-phenylene carbonyl-2,6-naphthalene carbonyl-1,4-phenylene) or 2,6-PEKEKNK is a polymer of the poly(aryl ether ketone) family differing from PEKEKK by the presence of a naphthyl group linked at positions 2 and 6 to the two ketone groups. It is synthesized by electrophilic precipitation polycondensation of 2,6- naphthalenedicarboxylic acid chloride with 4,4’-bis-(4-phenoxy) benzophenone in the presence of aluminium chloride. The dimensions of the orthorhombic unit cell determined from an initially amorphous, stretched film are: a = 0.778 nm, b = 0.613 nm, c = 5.52 nm. In contrast with PEKEKK no signs of polymorphism were found for 2,6 PEKEKNK. Its glass transition and melting temperatures are 20 °C and 2 °C above those of PEKEKK, respectively.

scholarly journals Dielectric and thermal properties of magnesium oxide/poly(aryl ether ketone) nanocomposites

2018 ◽  
Vol 25 (5) ◽  
pp. 915-925 ◽  
Author(s):  
Virappa Virupaxappa Pattanshetti ◽  
G.M. Shashidhara ◽  
Mysore Guruswamy Veena
Keyword(s):  
Thermal Conductivity ◽  
Thermal Properties ◽  
Magnesium Oxide ◽  
Coefficient Of Thermal Expansion ◽  
Thermal Studies ◽  
Aryl Ether ◽  
Scanning Calorimetry ◽  
Aryl Ether Ketone ◽  
Ether Ketone ◽  
Dielectric And Thermal Properties

AbstractIn the present study, dielectric and thermal properties of poly(aryl ether ketone) (PAEK)-nanocomposites with varying weight percentage of magnesium oxide (MgO) have been reported. The thermal properties of PAEK/MgO nanocomposites were studied using differential scanning calorimetry, thermogravimetric analysis, thermo-mechanical analysis and thermal conductivity. Transmission electron microscopy of the developed nanocomposites shows agglomerate-free dispersion of MgO nanoparticles in PAEK matrix. From the dielectric properties, dielectric constant of 13 was achieved for 10 wt% PAEK/MgO nanocomposite at 230°C. Further, minimum tan δ and maximum volume resistivity were found for 10 wt% PAEK/MgO nanocomposite. Data from thermal studies indicate that the incorporation of MgO into PAEK significantly enhanced the glass transition temperature and slightly deteriorated the thermal stability, char yield, and flame-retardant properties. Also, highest thermal conductivity and lowest coefficient of thermal expansion were achieved at 10 wt% of the MgO content. An excellent combination of both dielectric and thermal properties of the PAEK/MgO nanocomposites developed in the present study finds its potential application in microelectronics and electrical insulation in power equipments.

The molecular structure and polarizabilities of poly(aryl ether ketone)s

1996 ◽  
Vol 5 (2) ◽  
pp. 347-356
Author(s):  
Mitsuhiro Shibata ◽  
Ryutoku Yosomiya ◽  
Yang-Chuan Ke ◽  
Yu-Bin Zhen ◽  
Zhong-Wen Wu
Keyword(s):  
Molecular Structure ◽  
Aryl Ether ◽  
Aryl Ether Ketone ◽  
Ether Ketone

Molecular structure of some model compounds for poly(aryl ether ketone)s

1996 ◽  
Vol 197 (10) ◽  
pp. 3297-3308 ◽  
Author(s):  
Mitsuhiro Shibata ◽  
Ryutoku Yosomiya ◽  
Yu-Bin Zheng ◽  
Yang-Chuan Ke
Keyword(s):  
Molecular Structure ◽  
Aryl Ether ◽  
Model Compounds ◽  
Aryl Ether Ketone ◽  
Ether Ketone

scholarly journals The influence of carbon nanotube buckypaper/poly (ether imide) mats on the thermal properties of poly (ether imide) and poly (aryl ether ketone)/carbon fiber laminates

2021 ◽  
Vol 116 ◽  
pp. 108421
Author(s):  
Luis Felipe de Paula Santos ◽  
René Alderliesten ◽  
Winand Kok ◽  
Bruno Ribeiro ◽  
Juliana Bovi de Oliveira ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Carbon Nanotube ◽  
Carbon Fiber ◽  
Aryl Ether ◽  
Aryl Ether Ketone ◽  
Ether Ketone

Mild and in situ photo-crosslinking of anthracene-functionalized poly (aryl ether ketone) for enhancing temporal stability of organic NLO materials

2021 ◽  
Vol 56 (9) ◽  
pp. 5910-5923
Author(s):  
Yanxin Tian ◽  
Yulin He ◽  
Pan Liu ◽  
Hui Zhang ◽  
Qiuying Zheng ◽  
...  
Keyword(s):  
Temporal Stability ◽  
Aryl Ether ◽  
Nlo Materials ◽  
Aryl Ether Ketone ◽  
Ether Ketone

scholarly journals Bonding and Thermal Cycling Performances of Two (Poly)Aryl–Ether–Ketone (PAEKs) Materials to an Acrylic Denture Base Resin

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 543 ◽  
Author(s):  
Tzu-Yu Peng ◽  
Saiji Shimoe ◽  
Lih-Jyh Fuh ◽  
Chung-Kwei Lin ◽  
Dan-Jae Lin ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Thermal Cycling ◽  
Fatigue Testing ◽  
Lower Surface ◽  
Aryl Ether ◽  
Bonding Performance ◽  
Significant Difference ◽  
Aryl Ether Ketone ◽  
Ether Ketone ◽  
Thermal Cycling Fatigue

Poly(aryl–ether–ketone) materials (PAEKs) are gaining interest in everyday dental practices because of their natural properties. This study aims to analyze the bonding performance of PAEKs to a denture acrylic. Testing materials were pretreated by grinding, sandblasting, and priming prior to polymerization with the denture acrylic. The surface morphologies were observed using a scanning electron microscope and the surface roughness was measured using atomic force microscopy. The shear bond strength (SBS) values were determined after 0 and 2500 thermal cycles. The obtained data were analyzed using a paired samples t-test and Tukey’s honestly significant difference (HSD) test (α = 0.05). The surface characteristics of testing materials after different surface pretreatments showed obvious differences. PAEKs showed lower surface roughness values (0.02–0.03 MPa) than Co-Cr (0.16 MPa) and zirconia (0.22 MPa) after priming and sandblasting treatments (p < 0.05). The SBS values of PAEKs (7.60–8.38 MPa) met the clinical requirements suggested by ISO 10477 (5 MPa). Moreover, PAEKs showed significantly lower SBS reductions (p < 0.05) after thermal cycling fatigue testing compared to Co-Cr and zirconia. Bonding performance is essential for denture materials, and our results demonstrated that PAEKs possess good resistance to thermal cycling fatigue, which is an advantage in clinical applications. The results imply that PAEKs are potential alternative materials for the removable of prosthetic frameworks.

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