Results 151 to 160 of about 1,024 (182)

Mica filled polyetherketoneketones for material extrusion 3D printing

Additive Manufacturing, 2022
ABSTRACT Polyetherketoneketone (PEKK) has superior physical properties to most available thermoplastics compatible with material extrusion-based 3D printing. The performance of fused filament fabrication (FFF) compatible PEKK has been detailed primarily as a function of varying the isomer ratios composing the co-polymer structure.
Zachary C. Kennedy, Josef F. Christ, Michelle D. Fenn, Lirong Zhong, Wilaiwan Chouyyok, Anne M. Arnold, Adam C. Denny, Alan M. Albrecht, Joshua A. Silverstein, Rebecca L. Erikson, Jaehun Chun   +10 more
openaire   +1 more source

Enhanced Antibacterial Ability and Bioactivity of Polyetherketoneketone Modified with LL-37

Langmuir, 2022
Polyetherketoneketone (PEKK) is considered to be a potential substitute material for metal bone implants because of its advantageous biocompatibility, chemical stability, and mechanical properties, but clinical application has been severely restricted due to PEKK's lack of antibacterial ability and biological activity.
Yabing Jin, Yijin Wang, Yuhong Chen, Tianlei Han, Yiyi Chen, Chen Wang   +5 more
openaire   +2 more sources

Taguchi optimization of 3D printed short carbon fiber polyetherketoneketone (CFR PEKK)

Journal of the Mechanical Behavior of Biomedical Materials, 2023
In this study, the Taguchi method was utilized to optimize fused filament fabrication (FFF) additive manufacturing with the goal of maximizing the flexural strength of 3D printed polyaryletherketone specimens. We analyzed 3D printed (3DP) carbon fiber reinforced poly-etherketoneketone (CFR PEKK), 3D printed and pressed (3DP + P) CFR PEKK, and injection
Aliza Rabinowitz, Paul M. DeSantis, Cemile Basgul, Hannah Spece, Steven M. Kurtz   +4 more
openaire   +2 more sources

Hydroxyapatite whisker-reinforced polyetherketoneketone bone ingrowth scaffolds

Acta Biomaterialia, 2010
Hydroxyapatite (HA) whisker-reinforced polyetherketoneketone (PEKK) bone ingrowth scaffolds were prepared and characterized. High levels of porosity (75-90%) and HA whisker reinforcement (0-40 vol.%) were attained using a powder processing approach to mix the HA whiskers, PEKK powder and a NaCl porogen, followed by compression molding at 350-375 ...
Gabriel L, Converse, Timothy L, Conrad, Christina H, Merrill, Ryan K, Roeder   +3 more
openaire   +2 more sources

Mechanical properties of hydroxyapatite whisker reinforced polyetherketoneketone composite scaffolds

Journal of the Mechanical Behavior of Biomedical Materials, 2009
The apparent mechanical properties of hydroxyapatite (HA) whisker reinforced polyetherketoneketone (PEKK) scaffolds were evaluated in unconfined, uniaxial compression to investigate the effects of the porosity (75%, 82.5% and 90%), HA content (0, 20 and 40 vol%) and mold temperature (350, 365 and 375 ( composite function)C). Increased porosity resulted
Gabriel L, Converse, Timothy L, Conrad, Ryan K, Roeder   +2 more
openaire   +2 more sources

Preheat Compression Molding for Polyetherketoneketone: Effect of Molecular Mobility

Chinese Journal of Polymer Science, 2021
Polyetherketoneketone (PEKK) is a new evolving polymeric material, and is considered as another important member of the polyaryletherketone (PAEK) family in addition to polyetheretherketone (PEEK). Hot compression molding can be used to compact and consolidate the PEKK products, where the temperature and pressure play key roles to affect the molecular ...
Xiao-Hua Zhang, Meng-Xiao Jiao, Xin Wang, Bo-Lan Li, Feng Zhang, Yan-Bo Li, Jing-Na Zhao, He-Hua Jin, Yu Yang   +8 more
openaire   +1 more source

Preparation and properties of bisphenol A polyetherketoneketone based phthalonitrile resins

Journal of Applied Polymer Science, 2023
AbstractA promising high temperature phthalonitrile (PN) resin composed of a polyetherketoneketone (PEKK) core bridged by two bisphenol A linkers and end capped with PN groups is presented. This PEKK‐PN resin was characterized via differential scanning calorimetry, thermogravimetric analysis, proton nuclear magnetic resonance spectroscopy, scanning ...
Loren C. Brown, Tyler J. Richardson, Clair F. Lusk, Nickolaus K. Weise, Matthew Laskoski   +4 more
openaire   +1 more source

Wear of polyetherketoneketones — Influence of titanium dioxide content and antagonistic material

Dental Materials, 2018
The aim of this laboratory study was to analyze the influence of titanium dioxide (TiO2) content and antagonistic material on the wear of polyetherketoneketones (PEKKs).Twenty-four disk-shaped specimens of two PEKK materials containing either 10wt% or 20wt% TiO2 particles (P10 and P20) were dynamically loaded in a chewing simulator with 49N and ...
Thomas, Kewekordes, Sebastian, Wille, Matthias, Kern   +2 more
openaire   +2 more sources

Influence of Surface Conditioning on Bonding Polyetherketoneketone to Dental Ceramic

ECS Journal of Solid State Science and Technology, 2022
This study researched the effects of different surface conditioning techniques on the bond strength of polyetherketoneketone (PEKK) with lithium disilicate glass-ceramic material. Total of 105 test specimens were prepared from PEKK discs and randomly distributed into 5 experimental groups (n = 21) to which different surface conditioning techniques were
Gulfem Ergun, Bahar Tekli
openaire   +2 more sources

Complete denture fabrication with polyetherketoneketone as a framework material: A clinical report

The Journal of Prosthetic Dentistry, 2022
This clinical report describes the fabrication of conventional complete dentures with polyetherketoneketone (PEKK) frameworks made with computer-aided design and computer-aided manufacturing (CAD-CAM). No biologic or prosthetic complications were observed at the 1-year follow-up.
Ling, Ding, Wei, Lu, Xi, Chen, Qi, Xi, Guofeng, Wu   +4 more
openaire   +2 more sources