All Outputs (4)

Processing and properties of PLA-HA nanocomposites: The effect of particle morphology and dispersants (2017)
Conference Proceeding
Tomczynska, M. M., Ward, M., Choong, G. Y. H., Walton, K., De Focatiis, D. S. A., Grant, D. M., …Parsons, A. J. (2017). Processing and properties of PLA-HA nanocomposites: The effect of particle morphology and dispersants. In Proceedings of PPS-32: The 32nd International Conference of the Polymer Processing Society - Conference Papers (150004-1 - 150004-5). https://doi.org/10.1063/1.5016781

Biodegradable polylactic acid nanocomposites for orthopaedic implants require optimum particle dispersion and high molecular weight in load bearing applications. Novel coated hydroxyapatite nanoparticles can offer new opportunities for enhanced dispe... Read More about Processing and properties of PLA-HA nanocomposites: The effect of particle morphology and dispersants.

The Roles of Blending and of Molecular Weight Distribution on Craze Initiation (2017)
Journal Article
Sánchez-Valencia, A., Smerdova, O., Hutchings, L. R., & De Focatiis, D. S. A. (2017). The Roles of Blending and of Molecular Weight Distribution on Craze Initiation. Macromolecules, 50(23), 9507-9514. https://doi.org/10.1021/acs.macromol.7b01289

Craze initiation stress was measured in three-point bending isochronal creep tests on a series of entangled bimodal blends of polystyrenes of narrow dispersity, on three polystyrenes of broad dispersity, and on four blends of polystyrenes of broad di... Read More about The Roles of Blending and of Molecular Weight Distribution on Craze Initiation.

Can a combination of poly(ethylene glycol) and dense phase carbon dioxide improve processing of polylactide? A high pressure rheology investigation (2017)
Journal Article
Pepper, K., Masson, T., De Focatiis, D. S., & Howdle, S. M. (in press). Can a combination of poly(ethylene glycol) and dense phase carbon dioxide improve processing of polylactide? A high pressure rheology investigation. Journal of Supercritical Fluids, 133(1), https://doi.org/10.1016/j.supflu.2017.10.014

High temperature melts or use of organic solvents are not practicable approaches for encapsulating protein based or thermally labile drugs into degradable polymers. Here, we demonstrate that poly(ethylene glycol) (PEG) in combination with supercritic... Read More about Can a combination of poly(ethylene glycol) and dense phase carbon dioxide improve processing of polylactide? A high pressure rheology investigation.

Double diaphragm forming simulation for complex composite structures (2017)
Journal Article
Chen, S., McGregor, O., Endruweit, A., Elsmore, M., De Focatiis, D., Harper, L., & Warrior, N. (2017). Double diaphragm forming simulation for complex composite structures. Composites Part A: Applied Science and Manufacturing, 95, 346-358. https://doi.org/10.1016/j.compositesa.2017.01.017

A finite element (FE) model has been developed to simulate the double diaphragm forming (DDF) process, to identify potential defects when forming complex 3D preforms from 2D biaxial non-crimp fabric plies. Three different metrics have been introduced... Read More about Double diaphragm forming simulation for complex composite structures.