Supercritical carbon dioxide assisted extrusion of graphene nanofiller reinforced polymers for biomedical applications

Karode, Nireeksha and Fitzhenry, Laurence and Matthew, Siobhan and Walsh, Philip and Coffey, Austin (2018) Supercritical carbon dioxide assisted extrusion of graphene nanofiller reinforced polymers for biomedical applications. In: 2018 Society of Plastics Engineers Annual Technical Conference, ANTEC 2018, 2018-05-07 - 2018-05-10.

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Over the years, the need for multifunctional medical tubing systems have grown tremendously subsequently increasing the precision tubing design and manufacturing consideration. The requirements smaller dimension along with enhanced mechanical and flexibility characteristics have resulted in elevating the complexity in manufacturing and design considerations, hence higher cost per device. A research gap exists in scientific understanding on the use of nanofillers to match similar characteristics medical tubes. This lack of understanding and industrial transition exists due to filler agglomeration at low aspect ratio and uneven dispersion within the polymer matrix. This study investigates ability of supercritical fluid technology to exfoliate graphene filler particles in order to enhance the mechanical, homogeneity and even dispersion of particles within Pebax matrix. A one step direct scCO2-assisted extrusion to exfoliate and provide even dispersion was demonstrated. These properties were verified using thermomechanical and electrical characterisation.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Funding Information: This research is supported by Irish Research Council Government of Ireland Scholarship and partly by Institute of Technology Postgraduate Award. The authors acknowledge the support provided by Applied Polymer Technologies Research Centre, Athlone Institute of Technology (APT, AIT) and Dr Anup Poudel from Centre for Research in Medical Devices, National University of Ireland, Galway, Ireland. Publisher Copyright: © 2018 Society of Plastics Engineers. All rights reserved.
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/1500
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Depositing User: Admin SSL
Date Deposited: 19 Oct 2022 23:13
Last Modified: 03 Feb 2023 00:00

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