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All Outputs (14)

Developing alkaline titanate surfaces for medical applications (2023)
Journal Article
Wadge, M. D., McGuire, J., Thomas, K. G., Stuart, B. W., Felfel, R. M., Ahmed, I., & Grant, D. M. (in press). Developing alkaline titanate surfaces for medical applications. International Materials Reviews, Article 2153217. https://doi.org/10.1080/09506608.2022.2153217

Improving the surface of medical implants by plasma spraying of a hydroxyapatite coating can be of critical importance to their longevity and the patient’s convalescence. However, residual stresses, cracking, undesired crystallisation and delaminatio... Read More about Developing alkaline titanate surfaces for medical applications.

Nanostructured, Alkaline Titanate‐Converted, and Heat‐Treated Ti6Al4V Microspheres via Wet‐Chemical Alkaline Modification and their ORR Electrocatalytic Response (2022)
Journal Article
Wadge, M. D., Bird, M. A., Sankowski, A., Constantin, H., Fay, M. W., Cooper, T. P., …Grant, D. M. (2023). Nanostructured, Alkaline Titanate‐Converted, and Heat‐Treated Ti6Al4V Microspheres via Wet‐Chemical Alkaline Modification and their ORR Electrocatalytic Response. Advanced Materials Interfaces, 10(5), Article 2201523. https://doi.org/10.1002/admi.202201523

This study describes the chemical conversion and heat treatment of Ti6Al4V microspheres (Ti6_MS), and the resulting effects on their electrocatalytic properties. The wet-chemical conversion (5.0m NaOH, 60°C, 24h; Sample label: Ti6_TC) converts the to... Read More about Nanostructured, Alkaline Titanate‐Converted, and Heat‐Treated Ti6Al4V Microspheres via Wet‐Chemical Alkaline Modification and their ORR Electrocatalytic Response.

Characterization of potential nanoporous sodium titanate film formation on Ti6Al4V and TiO2 microspherical substrates via wet-chemical alkaline conversion (2022)
Journal Article
Wadge, M. D., Carrington, M. J., Constantin, H., Orange, K., Greaves, J., Islam, M. T., …Grant, D. M. (2022). Characterization of potential nanoporous sodium titanate film formation on Ti6Al4V and TiO2 microspherical substrates via wet-chemical alkaline conversion. Materials Characterization, 185, Article 111760. https://doi.org/10.1016/j.matchar.2022.111760

The authors present novel insights into the formation of nanoporous, wet-chemically produced sodium titanate films onto microspherical substrates of varying composition. Microspheres of Ti6Al4V (atomised; ca. 20–50 μm), which were utilised due to the... Read More about Characterization of potential nanoporous sodium titanate film formation on Ti6Al4V and TiO2 microspherical substrates via wet-chemical alkaline conversion.

Development and in vitro assessment of a bi-layered chitosan-nano-hydroxyapatite osteochondral scaffold (2022)
Journal Article
Pitrolino, K. A., Felfel, R. M., Pellizzeri, L. M., McLaren, J., Popov, A. A., Sottile, V., …Grant, D. M. (2022). Development and in vitro assessment of a bi-layered chitosan-nano-hydroxyapatite osteochondral scaffold. Carbohydrate Polymers, 282, Article 119126. https://doi.org/10.1016/j.carbpol.2022.119126

An innovative approach was developed to engineer a multi-layered chitosan scaffold for osteochondral defect repair. A combination of freeze drying and porogen-leaching out methods produced a porous, bioresorbable scaffold with a distinct gradient of... Read More about Development and in vitro assessment of a bi-layered chitosan-nano-hydroxyapatite osteochondral scaffold.

Water resistant fibre/matrix interface in a degradable composite: Synergistic effects of heat treatment and polydopamine coating (2021)
Journal Article
Felfel, R. M., Parsons, A. J., Chen, M., Stuart, B. W., Wadge, M. D., & Grant, D. M. (2021). Water resistant fibre/matrix interface in a degradable composite: Synergistic effects of heat treatment and polydopamine coating. Composites Part A: Applied Science and Manufacturing, 146, Article 106415. https://doi.org/10.1016/j.compositesa.2021.106415

Retaining a robust fibre-matrix interface in an aqueous environment has been an enduring challenge for fibre-reinforced biocomposites. This study addresses the issue by applying a polydopamine coating as a coupling agent to annealed and non-annealed... Read More about Water resistant fibre/matrix interface in a degradable composite: Synergistic effects of heat treatment and polydopamine coating.

Tailoring the degradation rate of magnesium through biomedical nano-porous titanate coatings (2020)
Journal Article
Wadge, M. D., McGuire, J., Hanby, B. V., Felfel, R. M., Ahmed, I., & Grant, D. M. (2021). Tailoring the degradation rate of magnesium through biomedical nano-porous titanate coatings. Journal of Magnesium and Alloys, 9(1), 336-350. https://doi.org/10.1016/j.jma.2020.07.001

A novel approach was developed to reduce the corrosion rate of magnesium (Mg) metal, utilising titanate coatings. Magnetron sputtering was used to deposit ca. 500 nm titanium (Ti) coatings onto pure Mg discs, followed by hydrothermal conversion and i... Read More about Tailoring the degradation rate of magnesium through biomedical nano-porous titanate coatings.

Preclinical biological and physicochemical evaluation of two-photon engineered 3D biomimetic copolymer scaffolds for bone healing (2020)
Journal Article
Kampleitner, C., Changi, K., Felfel, R. M., Scotchford, C. A., Sottile, V., Kluger, R., …Epstein, M. M. (2020). Preclinical biological and physicochemical evaluation of two-photon engineered 3D biomimetic copolymer scaffolds for bone healing. Biomaterials Science, 8(6), 1683-1694. https://doi.org/10.1039/c9bm01827a

A major challenge in orthopedics is the repair of large non-union bone fractures. A promising therapy for this indication is the use of biodegradable bioinspired biomaterials that stabilize the fracture site, relieve pain and initiate bone formation... Read More about Preclinical biological and physicochemical evaluation of two-photon engineered 3D biomimetic copolymer scaffolds for bone healing.

Developing highly nanoporous titanate structures via wet chemical conversion of DC magnetron sputtered titanium thin films (2020)
Journal Article
Wadge, M. D., Turgut, B., Murray, J. W., Stuart, B. W., Felfel, R. M., Ahmed, I., & Grant, D. M. (2020). Developing highly nanoporous titanate structures via wet chemical conversion of DC magnetron sputtered titanium thin films. Journal of Colloid and Interface Science, 566, 271-283. https://doi.org/10.1016/j.jcis.2020.01.073

© 2020 The Authors Titanate structures have been widely investigated as biomedical component surfaces due to their bioactive, osteoinductive and antibacterial properties. However, these surfaces are limited to Ti and its alloys, due to the nature of... Read More about Developing highly nanoporous titanate structures via wet chemical conversion of DC magnetron sputtered titanium thin films.

Improved phosphate‐based glass fiber performance achieved through acid etch/polydopamine treatment (2019)
Journal Article
Parsons, A. J., Felfel, R. M., Wadge, M. D., & Grant, D. M. (2020). Improved phosphate‐based glass fiber performance achieved through acid etch/polydopamine treatment. International Journal of Applied Glass Science, 11(1), 35-45. https://doi.org/10.1111/ijag.13672

Phosphate based glass fibres (PGF) are of interest as reinforcements for degradable implants, but have seen limited application due to their rapid loss of strength when subjected to aqueous conditions. Previous studies have utilised heat treatments t... Read More about Improved phosphate‐based glass fiber performance achieved through acid etch/polydopamine treatment.

Computational mechanical characterization of geometrically transformed Schwarz P lattice tissue scaffolds fabricated via two photon polymerization (2PP) (2018)
Journal Article
Zabidi, A. Z., Li, S., Felfel, R. M., Thomas, K. G., Grant, D. M., Mcnally, D., & Scotchford, C. (2019). Computational mechanical characterization of geometrically transformed Schwarz P lattice tissue scaffolds fabricated via two photon polymerization (2PP). Additive Manufacturing, 25, 399-411. https://doi.org/10.1016/j.addma.2018.11.021

Schwarz P unit cell-based tissue scaffolds comprised of poly(D,L-lactide-co-caprolactone)(PLCL) fabricated via the additive manufacturing technique, two-photon polymerisation (2PP) were found to undergo geometrical transformations from the original i... Read More about Computational mechanical characterization of geometrically transformed Schwarz P lattice tissue scaffolds fabricated via two photon polymerization (2PP).

Structural, mechanical and swelling characteristics of 3D scaffolds from chitosan-agarose blends (2018)
Journal Article
Felfel, R. M., Gideon-Adeniyi, M. J., Hossain, K. M. Z., Roberts, G. A., & Grant, D. M. (2019). Structural, mechanical and swelling characteristics of 3D scaffolds from chitosan-agarose blends. Carbohydrate Polymers, 204, 59-67. https://doi.org/10.1016/j.carbpol.2018.10.002

This study aimed to explore the correlation between mechanical and structural properties of chitosan-agarose blend (Ch-Agrs) scaffolds. Porosity of Ch-Agrs scaffolds was constant at 93%, whilst pore sizes varied between 150 and 550 μm. Pore sizes of... Read More about Structural, mechanical and swelling characteristics of 3D scaffolds from chitosan-agarose blends.

Performance of multiphase scaffolds for bone repair based on two-photon polymerized poly(d,l-lactide-co-?-caprolactone), recombinamers hydrogel and nano-HA (2018)
Journal Article
Felfel, R. M., Gupta, D., Zabidi, A. Z., Prosser, A., Scotchford, C. A., Sottile, V., & Grant, D. M. (2018). Performance of multiphase scaffolds for bone repair based on two-photon polymerized poly(d,l-lactide-co-?-caprolactone), recombinamers hydrogel and nano-HA. Materials and Design, 160, 455-467. https://doi.org/10.1016/j.matdes.2018.09.035

Multiphase hybrids were fabricated from poly(d,l-lactide-co-ɛ-caprolactone) (PLCL) copolymer scaffolds impregnated with silk-elastin-like recombinamers (SELRs) hydrogel containing 2 wt% hydroxyapatite nanoparticles (nHA). The PLCL scaffolds, triply-p... Read More about Performance of multiphase scaffolds for bone repair based on two-photon polymerized poly(d,l-lactide-co-?-caprolactone), recombinamers hydrogel and nano-HA.

Flexible and transparent films produced from cellulose nanowhisker reinforced agarose (2018)
Journal Article
Felfel, R. M., Hossain, K. M. Z., Kabir, S. F., Yee, S. L., Ahmed, I., & Grant, D. M. (2018). Flexible and transparent films produced from cellulose nanowhisker reinforced agarose. Carbohydrate Polymers, 194, https://doi.org/10.1016/j.carbpol.2018.04.005

Transparent and flexible nanocomposite films with a range of Agarose to Cellulose Nano-Whisker (CNW) ratios were produced using never-dried CNWs. The incorporation of never-dried CNWs within Agarose played an important role in the surface roughness (... Read More about Flexible and transparent films produced from cellulose nanowhisker reinforced agarose.

Wet and dry flexural high cycle fatigue behaviour of fully bioresorbable glass fibre composites: In-situ polymerisation versus laminate stacking (2017)
Journal Article
Chen, M., Lu, J., Felfel, R. M., Parsons, A. J., Irvine, D. J., Rudd, C. D., & Ahmed, I. (2017). Wet and dry flexural high cycle fatigue behaviour of fully bioresorbable glass fibre composites: In-situ polymerisation versus laminate stacking. Composites Science and Technology, 150, 1-15. https://doi.org/10.1016/j.compscitech.2017.07.006

Fully bioresorbable phosphate based glass fibre reinforced polycaprolactone (PCL/PGF) composites are potentially excellent candidates to address current issues experienced with use of metal implants for hard tissue repair, such as stress shielding ef... Read More about Wet and dry flexural high cycle fatigue behaviour of fully bioresorbable glass fibre composites: In-situ polymerisation versus laminate stacking.