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Rheological techniques for determining degradation of polylactic acid in bioresorbable medical polymer systems (2015)
Presentation / Conference Contribution
Choong, G. Y., Parsons, A. J., Grant, D. M., & De Focatiis, D. S. A. (2014, June). Rheological techniques for determining degradation of polylactic acid in bioresorbable medical polymer systems. Presented at PROCEEDINGS OF PPS-30: The 30th International Conference of the Polymer Processing Society – Conference Papers, Cleveland, Ohio, USA

AIP Publishing LLC. A method developed in the 1980s for the conversion of linear rheological data to molar mab distribution is revisited in the context of degradable polymers. The method is first applied using linear rheology for a linear polystyrene... Read More about Rheological techniques for determining degradation of polylactic acid in bioresorbable medical polymer systems.

Viscosity profiles of phosphate glasses through combined quasi-static and bob-in-cup methods (2014)
Journal Article
PARSONS, A., SHARMIN, N., SHAHARUDDIN, S., & MARSHALL, M. (2015). Viscosity profiles of phosphate glasses through combined quasi-static and bob-in-cup methods. Journal of Non-Crystalline Solids, 408, 76-86. https://doi.org/10.1016/j.jnoncrysol.2014.10.014

This study used a combined viscosity approach to determine theoretical fibre drawing points for glasses in the series: xP2O5, 24MgO, 16CaO, (60-x)Na2O (x = 40,45,50,55) and yP2O5, 24MgO, 16CaO, (55-y)Na2O, 5Fe2O3 (y = 40,45,50,55). The points cannot... Read More about Viscosity profiles of phosphate glasses through combined quasi-static and bob-in-cup methods.

Mechanical, degradation and cytocompatibility properties of magnesium coated phosphate glass fibre reinforced polycaprolactone composites (2014)
Journal Article
Liu, X., Hasan, M. S., Grant, D. M., Harper, L. T., Parsons, A. J., Palmer, G., …Ahmed, I. (2014). Mechanical, degradation and cytocompatibility properties of magnesium coated phosphate glass fibre reinforced polycaprolactone composites. Journal of Biomaterials Applications, 29(5), https://doi.org/10.1177/0885328214541302

Retention of mechanical properties of phosphate glass fibre reinforced degradable polyesters such as polycaprolactone and polylactic acid in aqueous media has been shown to be strongly influenced by the integrity of the fibre/polymer interface. A pre... Read More about Mechanical, degradation and cytocompatibility properties of magnesium coated phosphate glass fibre reinforced polycaprolactone composites.

Effect of boron oxide addition on fibre drawing, mechanical properties and dissolution behaviour of phosphate-based glass fibres with fixed 40, 45 and 50 mol% P2O5 (2014)
Journal Article
Sharmin, N., Parsons, A. J., Rudd, C. D., & Ahmed, I. (2014). Effect of boron oxide addition on fibre drawing, mechanical properties and dissolution behaviour of phosphate-based glass fibres with fixed 40, 45 and 50 mol% P2O5. Journal of Biomaterials Applications, 29(5), 639-653. https://doi.org/10.1177/0885328214539824

© The Author(s) 2014. Previous studies investigating manufacture of phosphate-based glass fibres from glasses fixed with P2O5 content less than 50 mol% showed that continuous manufacture without breakage was very difficult. In this study, nine phosph... Read More about Effect of boron oxide addition on fibre drawing, mechanical properties and dissolution behaviour of phosphate-based glass fibres with fixed 40, 45 and 50 mol% P2O5.

Initial mechanical properties of phosphate-glass fibre-reinforced rods for use as resorbable intramedullary nails (2012)
Journal Article
Felfel, R. M., Ahmed, I., Parsons, A. J., Harper, L. T., & Rudd, C. D. (2012). Initial mechanical properties of phosphate-glass fibre-reinforced rods for use as resorbable intramedullary nails. Journal of Materials Science, 47(12), 4884-4894. https://doi.org/10.1007/s10853-012-6355-9

This paper investigates the use of novel phosphate- glass fibre-reinforced rods as resorbable intramedullary nails. Random and unidirectional fibres were moulded into composite rods by forging at ∼100 °C. Rods produced using non-woven random mats (RM... Read More about Initial mechanical properties of phosphate-glass fibre-reinforced rods for use as resorbable intramedullary nails.

Influence of screw holes and gamma sterilization on properties of phosphate glass fiber-reinforced composite bone plates (2011)
Journal Article
Han, N., Ahmed, I., Parsons, A. J., Harper, L., Scotchford, C. A., Scammell, B. E., & Rudd, C. D. (2013). Influence of screw holes and gamma sterilization on properties of phosphate glass fiber-reinforced composite bone plates. Journal of Biomaterials Applications, 27(8), 990-1002. https://doi.org/10.1177/0885328211431855

Polymers prepared from polylactic acid (PLA) have found a multitude of uses as medical devices. For a material that degrades, the main advantage is that an implant would not necessitate a second surgical event for removal. In this study, fibers produ... Read More about Influence of screw holes and gamma sterilization on properties of phosphate glass fiber-reinforced composite bone plates.

Melt-processed PLA/HA platelet nanoparticle composites produced using tailored dispersants
Presentation / Conference Contribution
Parsons, A. J., Walton, K., Hild, F., Ilchev, A., Gimeno-Fabra, M., Tomczynska, M. M., …Irvine, D. J. (in press). Melt-processed PLA/HA platelet nanoparticle composites produced using tailored dispersants.

Hydroxyapatite (HA) nanoparticles, similar to those seen in the structure of human bone, have been produced via hydrothermal synthesisand used to produce nanocomposite materials via melt blending with poly(lactic acid)(PLA). Both of these processes a... Read More about Melt-processed PLA/HA platelet nanoparticle composites produced using tailored dispersants.