Niemczyk, A., El Fray, M. and Franklin, S.E. (2015) Friction behaviour of hydrophilic lubricious coatings for medical device applications. Tribology International, 89. pp. 54-61. ISSN 0301-679X
Abstract
The friction behaviour of new chitosan derivative coatings obtained by chemical modification of chitosan with fatty acids (linoleic and dilinoleic acid) has been investigated in order to explore their potential as endovascular catheter coatings and to benchmark them against commercially available coatings used in endovascular catheter applications. An in vitro tribological system was developed that was intended to represent to a limited extent the in vivo tribological conditions of a typical endovascular catheterization procedure. Continuous reciprocating sliding tests were carried out with uncoated and coated polymer specimens. The results showed that all of the coatings tested decreased the coefficient of friction compared to the uncoated polymer. Compared to a neat chitosan coating, the chitosan derivative coatings showed a clear reduction in the coefficient of friction to levels similar to those of the commercially-available coatings. A comparison between the friction results and contact angle measurements carried out on the coatings indicated that a range of contact angle values exists for which the friction coefficient is at a minimum. The reason for this is unclear and further studies are required in order to confirm and investigate the trend, especially within the context of hydrophilic lubricious coating development.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2015 Published by Elsevier Ltd. This is an author produced version of a paper subsequently published in Tribology International . Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Friction coefficient; Chitosan coatings; Hydrogels; Catheter coatings |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 30 Mar 2017 13:09 |
Last Modified: | 06 Apr 2017 08:59 |
Published Version: | https://doi.org/10.1016/j.triboint.2015.02.003 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.triboint.2015.02.003 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:112506 |