Journal
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
Volume 71, Issue 7, Pages 531-539Publisher
TAYLOR & FRANCIS AS
DOI: 10.1080/00914037.2020.1857760
Keywords
Hemocompatibility; hydrophilicity; PEG; polyurethane
Categories
Funding
- Basque Government
- University of the Basque Country [IT 1313-19, GIU19/077]
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The study found that adding a certain proportion of hydrophilic polyethylene glycol (PEG) to polyurethane materials can significantly improve the hemocompatibility of the material, which is of great significance for cardiovascular device coatings.
The risk of clot formation in blood-contacting devices is a significant concern. Therefore, development of biomaterials with improved hemocompatibility is a clinical need. Altering surface properties is an effective strategy to enhance the hemocompatibility. We have investigated the effect of hydrophilic polyethylene glycol (PEG) amount over the hydrophobic polycarbonate (PC) on hemocompatibility of polyurethanes. The presence of PEG on the surface was evaluated using ATR, AFM, and WCA. At above 20% of PEG to PC ratios, exhibit zero WCA, considerable improvement in hemocompatibility, was achieved. The results indicated the synthesized PUs could be used as coatings of cardiovascular devices.
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