Performance enhancement of PEBAX using supercritical fluid extrusion for biomedical applications

Nireeksha Karode, Laurence Fitzhenry, Anup Poudel, Philip Walsh, Siobhán Matthews, Austin Coffey

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

Abstract

An intravascular catheter system requires design specifications that needs to provide sufficient flexibility, to follow desired path required by the surgeon and adequate stiffness to travel along the curving path of vasculature. This paper presents the effects of sub-supercritical, near-supercritical and beyond supercritical carbon dioxide assisted extrusion process and their characterization to evaluate their thermal and dynamic mechanical properties using Pebax. A twin-screw-extruder using scCO2 can effectively generate foams, while providing excellent control over mechanical and thermal properties. The crystallization and melting behaviour of scCO2 assisted extrudates were investigated using differential scanning calorimeter technique (DSC) for various isothermal conditions. The mechanical performance was evaluated by using dynamic mechanical thermal analysis (DMA) and tensile test. A significant increase in dynamic modulus was observed for Pebax extruded at 800 psi and 1000psi, however, decreased resilience and toughness was noted for Pebax extruded at 1200psi.

Original languageEnglish
Title of host publicationANTEC 2016 - Proceedings of the Annual Technical Conference and Exhibition of the Society of Plastics Engineers
PublisherSociety of Plastics Engineers
Pages1377-1382
Number of pages6
ISBN (Electronic)9780692719619
Publication statusPublished - 2016
Event74th Annual Technical Conference and Exhibition of the Society of Plastics Engineers, SPE ANTEC Indianapolis 2016 - Indianapolis, United States
Duration: 23 May 201625 May 2016

Publication series

NameAnnual Technical Conference - ANTEC, Conference Proceedings

Conference

Conference74th Annual Technical Conference and Exhibition of the Society of Plastics Engineers, SPE ANTEC Indianapolis 2016
Country/TerritoryUnited States
CityIndianapolis
Period23/05/201625/05/2016

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