Argon plasma treatment-induced grafting of acrylic acid onto expanded poly(tetrafluoroethylene) membranes

Mohd Hidzir, Norsyahidah, Hill, David J. T., Taran, Elena, Martin, Darren and Grondahl, Lisbeth (2013) Argon plasma treatment-induced grafting of acrylic acid onto expanded poly(tetrafluoroethylene) membranes. Polymer, 54 24: 6536-6546. doi:10.1016/j.polymer.2013.10.003


Author Mohd Hidzir, Norsyahidah
Hill, David J. T.
Taran, Elena
Martin, Darren
Grondahl, Lisbeth
Title Argon plasma treatment-induced grafting of acrylic acid onto expanded poly(tetrafluoroethylene) membranes
Journal name Polymer   Check publisher's open access policy
ISSN 0032-3861
1873-2291
Publication date 2013-11-14
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.polymer.2013.10.003
Volume 54
Issue 24
Start page 6536
End page 6546
Total pages 11
Place of publication London, United Kingdom
Publisher Elsevier
Collection year 2014
Language eng
Abstract Expanded poly(tetrafluoroethylene) (ePTFE) is used in facial reconstruction surgery. For some specific applications ePTFE is required to interface with the underlying bone. However, ePTFE is classified as bioinert thus limiting integration at the bone-tissue interface. The incorporation of functional groups onto the ePTFE surface was carried out in the current study using argon plasma treatment-induced grafting of acrylic acid (AA) to improve integration. High surface coverage (grafting extent from XPS of up to 90%) was achieved and resulted in high hydrophilicity and high water uptake (up to 470% of the grafted PAA mass). The contribution of species present in the plasma to the incorporation of functional groups onto the ePTFE surface was evaluated with charged species observed to play an equally important role to neutral species in this study. The effects of sample position in the plasma chamber as well as the effect of grafting parameters (plasma power, monomer concentration, and reaction time) on the grafting outcome were evaluated. The mechanical properties of the AA grafted membranes under tensile, compression and nanoindentation were evaluated.
Keyword Ar plasma treatment
Expanded poly(tetrafluoroethylene)
Surface modification
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Fri, 10 Jan 2014, 10:51:50 EST by Miss Abigail Downie on behalf of School of Chemistry & Molecular Biosciences