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Polymers for Artificial Joints
Published in Severian Dumitriu, Valentin Popa, Polymeric Biomaterials, 2020
Masayuki Kyomoto, Toru Moro, Kazuhiko Ishihara
Poly(aryl-ether-ketone) (PAEK), including poly(ether-ether-ketone) (PEEK), is a new family of high-performance thermoplastic polymers, consisting of an aromatic backbone molecular chain interconnected by ketone and ether functional groups, i.e., a BP unit is included in its molecular structure. Polyaromatic ketones exhibit enhanced mechanical properties, and their chemical structure is stable, resistant to chemical and radiation damage, and compatible with several reinforcing agents (such as glass and carbon fibers; carbon fiber-reinforced PEEK [CFR-PEEK], Figure 25.21). Therefore, they are considered to be promising materials for not only industrial applications but also biomedical applications.
Advancements and Potential Prospects of Polymer/Metal Oxide Nanocomposites: From Laboratory Synthesis to Commercialization
Published in Shakeel Ahmed, Saiqa Ikram, Suvardhan Kanchi, Krishna Bisetty, Biocomposites, 2018
Polyaryletherketone (PAEK) belongs to the family of semicrystalline thermoplastic polymers with high temperature stability and mechanical strength. In the literature, work has been reported where different weight percentages of ZnO nanoparticles are added into the PAEK matrix using the ball milling method. It was noticed that the properties of nanocomposites varied with the volume fraction of ZnO nanoparticles, which is given by the following equation: vf=wf/[wf+wm(ρf/ρm)] $$ v_{f} = {{w_{f} } \mathord{\left/ {\vphantom {{w_{f} } {[w_{f} + w_{m} ({{\rho _{f} } \mathord{\left/ {\vphantom {{\rho _{f} } {\rho _{m} }}} \right. \kern-\nulldelimiterspace} {\rho _{m} }})]}}} \right. \kern-\nulldelimiterspace} {[w_{f} + w_{m} ({{\rho _{f} } \mathord{\left/ {\vphantom {{\rho _{f} } {\rho _{m} }}} \right. \kern-\nulldelimiterspace} {\rho _{m} }})]}} $$
Materials in Additive Manufacturing
Published in G.K. Awari, C.S. Thorat, Vishwjeet Ambade, D.P. Kothari, Additive Manufacturing and 3D Printing Technology, 2021
G.K. Awari, C.S. Thorat, Vishwjeet Ambade, D.P. Kothari
Advanced AM materials also include high-performance polymers, in particular PAEK family polymers such as PEEK, PEKK, and PEI (ULTEM). These are high-temperature, high-stress thermoplastics that melt at temperatures of 400°C. The ability to print 3D using these materials for a number of medical and metal-replacement industrial applications is expected to significantly boost the demand for additive manufacturing.
Thin-Film and Marginal Lubrication of Polyetherketone–Steel Sliding Contacts at High Temperature and High Speed
Published in Tribology Transactions, 2018
Christopher J. Dyson, Martin Priest, Malcolm F. Fox, William A. Hopkins
Polyetherketone (PEK) is a semicrystalline member of the polyaryletherketone (PAEK) thermopolymer family, synthesized by polymerizing phenolic and benzaldehyde aromatic molecules. Different input proportions of the monomers give a range of materials whose structural units consist of aromatic rings connected by ether and ketone linkages in varying proportions (Fig. 1). The PAEK polymer family is relatively unique in that their basic structural units can be varied by fundamental molecular design of each repeat unit, reflected in their respective physical properties (Table 1).