Results 31 to 40 of about 1,511 (194)

In VitroEvaluation of Bioactivity of Chemically Deposited Hydroxyapatite on Polyether Ether Ketone [PDF]

International Journal of Biomaterials, 2015
Polyether ether ketone (PEEK) is considered the best alternative material for titanium for spinal fusion cage implants due to its low elasticity modulus and radiolucent property. The main problem of PEEK is its bioinert properties. Coating with hydroxyapatite (HA) showed very good improvement in bioactivity of the PEEK implants.
Davood Almasi, S. Izman, Morteza Sadeghi, Nida Iqbal, Fatemeh Roozbahani, Krishnamurithy Genasan, Tunku Kamarul, Mohammed Rafiq Abdul Kadir   +7 more
openaire   +4 more sources

Polydopamine grafting polyether ether ketone to stabilize growth factor for efficient osteonecrosis repair

Scientific Reports
This study examines the biocompatibility, osteogenic potential, and effectiveness of polyether ether ketone (PEEK) composites for treating osteonecrosis, seeking to establish a theoretical basis for clinical application.
Yi Sun, Jingyun Liu, Kaijia Chen, Nannan Zhong, Chengpeng He, Xinming Luan, Xiaobei Zang, Jianbo Sun, Ning Cao, Wenbo Wang, Qiang Ren   +10 more
doaj   +1 more source

Optimization of sPEEK/S-TiO2 nanocomposite membranes using response surface methodology for low-temperature fuel cell

Results in Engineering
Polyether-ether-ketone (PEEK), a speciality thermoplastic polymer is treated with concentrated sulfuric acid to introduce sulfonated repeating units in its backbone.
Mawlood Maajal Ali, Ali Basem, Anmar Sh Jasim, Dheyaa J. Jasim, Ameer Azam, S.J.A. Rizvi, Yusra A. AlBahadli, Maryam Hussein Abdulameer   +7 more
doaj   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Advanced Separators for Liquid and Quasi‐Solid Lithium Rechargeable Batteries: Design and Development

Advanced Materials, EarlyView.
This review traces the evolution of lithium‐ion battery separators from passive barriers to multifunctional components central to cell safety and performance. Polymer‐ceramic hybrids, nanofiber architectures, and bio‐derived membranes deliver ionic conductivities above 3 mS cm−1, thermal stability beyond 200 °C, and effective suppression of lithium ...
Karthik Vishweswariah, Ningaraju Gejjiganahalli Ningappa, Anil Kumar M. R., Jeremy I. G. Dawkins, Thiago M. G. Selva, Karim Zaghib   +5 more
wiley   +1 more source

Using a Zero‐Strain Reference Electrode to Distinguish Anode and Cathode Volume Changes in a Solid‐State Battery

Advanced Materials Interfaces, EarlyView.
Volume changes of a solid‐state battery cell are separated into the individual contributions of anode and cathode. Simultaneously determining the “reaction volumes” of both electrodes requires a reference electrode with a pressure‐independent potential.
Mervyn Soans, Benedikt Huber, Marcel Drüschler, Dominic Bresser, Alberto Varzi, Christoffer Karlsson   +5 more
wiley   +1 more source

Enhanced mechanical, thermotolerance, and anti-yellowing performance of glass fibre filled polyether-ether-ketone composites with enclosed polyether-ether-ketone polyamide acid sizing agent

Materials & Design
The application potential of glass fiber reinforced polyether-ether-ketone (GF/PEEK) composites is hampered by weak interfacial adhesion. This problem originates from the low wettability and the thermal decomposition of the interlayer at high ...
Hengjian Huan, Ruiyang Li, Mingxin Fan, Haiquan Guo, Lipeng Zhang, Jianying Zhao   +5 more
doaj   +1 more source

Optofluidic Raman Analysis and Capacity Recovery in Li‐ion Cells

Advanced Materials Technologies, EarlyView.
Operando Raman spectroscopy is used to monitor the degradation of commercial Li‐ion cells. Using a microfluidic access port, small amounts of electrolyte are sampled into a hollow‐core optical fibre, where fibre‐enhanced Raman analysis reveals Li+ solvation changes and solvent evolution.
Ermanno Miele, Wesley M. Dose, Ian A. K. Davidson, Hesham Sakr, Natalie V. Wheeler, Francesco Poletti, Michael De Volder, Clare P. Grey, Jeremy J. Baumberg, Tijmen G. Euser   +9 more
wiley   +1 more source

Degradation Mechanisms in PEM Water Electrolysis: Diagnosis and Impact

Advanced Materials Technologies, EarlyView.
This review provides an analysis of degradation mechanisms in proton electrolyte membrane water electrolyzers (PEMWE), focusing on all key components. It discusses diagnostic and measurement techniques for evaluating degradation, less‐studied mechanisms, and an expert survey.
Annik Bernhardt, Katja Lange, Robert Göckeritz, Erik Grunwald, Angelika Hähnel, Alexander Müller, Volker Naumann, Sistan Rasuli, Wolfram Münchgesang, Bruno G. Pollet, Kerstin Witte‐Bodnar, Klemens Ilse   +11 more
wiley   +1 more source

Molecular fractionation with poly(ether ether ketone) hollow fibers

Advanced Membranes
Sustainable and efficient separation technologies are essential for minimizing the environmental impact of the chemical and pharmaceutical industries. Membranes with stability in solvents and precise molecular separation are needed.
Banan Alhazmi, Lakshmeesha Upadhyaya, Shanshan Hong, Gergo Ignacz, Radosław Górecki, Maik Tepper, Hannah Roth, Matthias Wessling, Gyorgy Szekely, Suzana P. Nunes   +9 more
doaj   +1 more source