Jump to main content
Jump to site search

Issue 39, 2018
Previous Article Next Article

Durable, flexible, superhydrophobic and blood-repelling surfaces for use in medical blood pumps

Author affiliations

Abstract

Extracorporeal blood pumps expose blood to high stresses and can cause blood damage or clotting, leading to serious complications and death. One possible solution is to use superhydrophobic (SHP) surfaces to reduce blood stresses via slip flow. However, current SHP surfaces have the durability problem, or are difficult to customize into complex 3D shapes. Here, we report a novel sand-casting technique to prepare a SHP and blood-repelling surface made of silicone and functionalized SiO2 nanoparticles, which is durable, flexible, and customizable into complex 3D shapes with relative ease. Compared to plain silicone surfaces, the casted surface can reduce the water drag force by up to 72%. The casted item is mechanically durable, maintaining its SHP properties after repeated tape peeling and alcohol swab rubbing, high-speed (9.7 m sāˆ’1) water impacting, and high-pressure sandpaper abrasion. Its flexibility is also demonstrated by retention of its superhydrophobicity after repeated bending. Moreover, the material is SHP as prepared. This allows the material to be shape-customizable, simply by preparing molds of specific 3D geometries for sand-casting, which will be useful on surfaces of complex 3D shapes. This SHP material can be used on rigid blood pump surfaces or on flexible tubings of roller pumps.

Graphical abstract: Durable, flexible, superhydrophobic and blood-repelling surfaces for use in medical blood pumps

Back to tab navigation

Supplementary files

Article information


Submitted
13 Jun 2018
Accepted
01 Aug 2018
First published
20 Aug 2018

J. Mater. Chem. B, 2018,6, 6225-6233
Article type
Paper

Durable, flexible, superhydrophobic and blood-repelling surfaces for use in medical blood pumps

Z. Li, B. L. Nguyen, Y. C. Cheng, J. Xue, G. MacLaren and C. H. Yap, J. Mater. Chem. B, 2018, 6, 6225 DOI: 10.1039/C8TB01547C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.


Social activity

Search articles by author

Spotlight

Advertisements