China
Africa
Explore chapters and articles related to this topic
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)] $$ v_{f} = {{w_{f} } \mathord{\left/ {\vphantom {{w_{f} } {[w_{f} + w_{m} ({{\rho _{f} } \mathord{\left/ {\vphantom {{\rho _{f} } {\rho _{m} }}} \right. \kern-\nulldelimiterspace} {\rho _{m} }})]}}} \right. \kern-\nulldelimiterspace} {[w_{f} + w_{m} ({{\rho _{f} } \mathord{\left/ {\vphantom {{\rho _{f} } {\rho _{m} }}} \right. \kern-\nulldelimiterspace} {\rho _{m} }})]}} $$
A preliminary study on surface bioactivation of polyaryletherketone by UV-grafting with PolyNaSS: influence on osteogenic and antibacterial activities
Published in Journal of Biomaterials Science, Polymer Edition, 2022
Yijin Wang, Yabing Jin, Yiyi Chen, Tianlei Han, Yuhong Chen, Chen Wang
Titanium and titanium alloys are the most widely used orthopedic and dental implant materials [1]. However, these materials are associated with the release of metal ions. In addition, these materials tend to have high elastic moduli (110 GPa for titanium alloys as compared to 6–20 GPa for bone [2]) that may contribute to implant failure. Potential alternatives to titanium and titanium alloys in this application are a class of high-temperature thermoplastic polymer polyaryletherketone (PAEK). In particular, the representative PAEKs, polyetheretherketone (PEEK) and polyetherketoneketone (PEKK), have received a great deal of attention due to multiple favorable properties, including their suitable mechanical strength, high chemical tolerance, and good biocompatibility [3]. PEEK and PEKK have been utilized in spinal surgery, joint arthroplasty, maxillo-facial surgery, oral implantology and prosthodontics, and multiple other medical applications [4, 5]. Despite these successes, the application of these compounds as orthopedic and dental implant materials and the improvement of their osseointegration remain as key challenges.