Aqueous electrophoretic deposition of bulk polyether ether ketone (PEEK)

Iveković, Aljaž; Novak, Saša; Lukek, Marko; Kalin, Mitjan

doi:10.1016/j.jmatprotec.2015.03.045

Cited by 21 publications

(10 citation statements)

References 16 publications

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“…However, it has also been used for purification, particle size reduction (in sizes ranging from nano-to micrometres), and development of specific particle morphology [32,33] and sonochemical synthesis [34][35][36]. Despite its benefits, TS has been rarely used in preparing PEEK suspensions for EPD [37][38][39] in comparison with bath ultrasonication [6,[40][41][42][43][44][45][46][47][48][49][50][51][52][53].…”

Section: Introductionmentioning

confidence: 99%

Nanocomposite coatings obtained by electrophoretic co-deposition of poly(etheretherketone)/graphene oxide suspensions

et al. 2020

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Nanocomposite coatings were successfully prepared by electrophoretic deposition of poly(etheretherketone) (PEEK)/graphene oxide (GO) suspensions. The GO flakes developed a large-scale co-continuous morphology with the basal plane mainly aligned with the coating surface. However, the PEEK particles were also found to be wrapped by GO nanosheets when deposited on the stainless steel substrate. Both phenomena, the co-continuous morphology and the wrapping effect, were dependent on the initial GO content in the suspension and influenced the final morphological characteristics of the thermally treated coatings. The PEEK matrix developed a dendritic morphology during its cooling from the molten state because of transcrystallinity that was induced by the incorporation of GO. The preparation of suspensions involved tip ultrasonication (TS) to deagglomerate, disperse, and mill the PEEK particles. A detailed study of the microstructure revealed that TS tended not only to reduce PEEK particle size, but also to promote an elongated shape, favourable for the nanocomposite coatings.

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Section: Introductionmentioning

confidence: 99%

Nanocomposite coatings obtained by electrophoretic co-deposition of poly(etheretherketone)/graphene oxide suspensions

et al. 2020

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“…The degree of crystallinity in PEEK is related to the provided cooling rate after melting. Generally, in slow cooling, the molecular chains get enough time to rotate and reorganize into an ordered structure [91,157,158]. Amorphous PEEK gets crystallized at a glass transition temperature (Tg) of 143 • C. This temperature is well below the melting temperature of PEEK, which is 345 • C [156,159].…”

Section: Epd Of Peek Based Coatingsmentioning

confidence: 99%

A Brief Insight to the Electrophoretic Deposition of PEEK-, Chitosan-, Gelatin-, and Zein-Based Composite Coatings for Biomedical Applications: Recent Developments and Challenges

et al. 2021

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Electrophoretic deposition (EPD) is a powerful technique to assemble metals, polymer, ceramics, and composite materials into 2D, 3D, and intricately shaped implants. Polymers, proteins, and peptides can be deposited via EPD at room temperature without affecting their chemical structures. Furthermore, EPD is being used to deposit multifunctional coatings (i.e., bioactive, antibacterial, and biocompatible coatings). Recently, EPD was used to architect multi-structured coatings to improve mechanical and biological properties along with the controlled release of drugs/metallic ions. The key characteristics of EPD coatings in terms of inorganic bioactivity and their angiogenic potential coupled with antibacterial properties are the key elements enabling advanced applications of EPD in orthopedic applications. In the emerging field of EPD coatings for hard tissue and soft tissue engineering, an overview of such applications will be presented. The progress in the development of EPD-based polymeric or composite coatings, including their application in orthopedic and targeted drug delivery approaches, will be discussed, with a focus on the effect of different biologically active ions/drugs released from EPD deposits. The literature under discussion involves EPD coatings consisting of chitosan (Chi), zein, polyetheretherketone (PEEK), and their composites. Moreover, in vitro and in vivo investigations of EPD coatings will be discussed in relation to the current main challenge of orthopedic implants, namely that the biomaterial must provide good bone-binding ability and mechanical compatibility.

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“…[20][21][22] In recent years, poly(ether-ether-ketone) (PEEK) as a semicrystalline thermoplastic polymer exhibits great application prospect at fracture fixation, spine implants, and the joint replacement because of its excellent mechanical properties, chemical stability, good biocompatibility, and lubricating properties. [23][24][25][26] However, despite numerous beneficial properties, the application of PEEK for surface materials in friction and wear conditions is strongly limited because the decreased crystallinity and high COF during the friction process. 27 Accordingly, in recent years the researchers have focused on introducing some solid lubricants to reduce the COF of PEEK coatings, such as polytetrafluoroethylene (PTFE), 28 molybdenum disulfide (MoS 2 ), 29 and graphite 30 ).…”

Section: Introductionmentioning

confidence: 99%

Enhanced tribological properties of PEEK‐based composite coatings reinforced by PTFE and graphite

Liao

Cao

Wang

et al. 2021

J of Applied Polymer Sci

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The lubricating failure problems caused by friction and wear severely inhibit the regular operation and lifetime of artificial implanted joints. In order to improve their wear resistance effectively, the functional nano/micro-composite coatings consisted of poly(ether-ether-ketone) (PEEK)/graphite/polytetrafluoroethylene (PTFE) were successfully prepared through electrophoretic deposition and heat treatment. Additionally, the friction and wear behaviors under different loads and lubricating mediums of the composite coatings were investigated systematically. The results show that the composite coating significantly increased the microhardness and wear resistance of PEEK coating. The introduction of graphite and PTFE fillers reduces the wear rates and coefficient of friction (COF) of the composite coating significantly. Especially under 10 N load conditions, the friction and wear tests show that the composite coatings drop by 80% of friction coefficient and an order of magnitude in wear rates compared to that of PEEK coating. The improved wear resistance can be attributed to the synergistic effect of PTFE and graphite fillers. As a result, the graphite provides good load-bearing capacity and the PTFE lubricant endow a low friction coefficient for the composite coatings. Thus, this study provides a better approach to improve the wear resistance of PEEK-based coatings.

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Aqueous electrophoretic deposition of bulk polyether ether ketone (PEEK)

Cited by 21 publications

References 16 publications

Nanocomposite coatings obtained by electrophoretic co-deposition of poly(etheretherketone)/graphene oxide suspensions

Nanocomposite coatings obtained by electrophoretic co-deposition of poly(etheretherketone)/graphene oxide suspensions

A Brief Insight to the Electrophoretic Deposition of PEEK-, Chitosan-, Gelatin-, and Zein-Based Composite Coatings for Biomedical Applications: Recent Developments and Challenges

Enhanced tribological properties of PEEK‐based composite coatings reinforced by PTFE and graphite

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