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Stabilizing Hepatocellular Phenotype Using Optimized Synthetic Surfaces

Stabilizing Hepatocellular Phenotype Using Optimized Synthetic Surfaces

Published on: September 26, 2014

Robust Polyurethane with Ordered Hard Segments and Pendant Fluorinated Chains for Improved Hemocompatibility.

Shengkai Zhao¹, Rongrong Zhang², Zhaosheng Hou²

¹College of Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.

Molecules (Basel, Switzerland)

|June 12, 2026

Summary

A new fluorinated polyurethane (F-PCU) enhances hemocompatibility for biomedical devices by reducing protein adsorption and thrombosis. This material maintains mechanical strength and cell compatibility for improved long-term applications.

Keywords:

fluorinated side chains hemocompatibility ordered hard segments polyurethane

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Area of Science:

Biomaterials Science
Polymer Chemistry
Surface Engineering

Background:

Polyurethane (PU) is widely used in biomedical devices.
Insufficient hemocompatibility, due to protein adsorption and thrombosis, limits long-term PU application.
Improving hemocompatibility while preserving mechanical and cytocompatibility is crucial.

Purpose of the Study:

To design and synthesize a fluorinated polyurethane (F-PCU) with enhanced surface hemocompatibility.
To evaluate the surface properties, mechanical performance, and biological compatibility of F-PCU.
To investigate the potential of F-PCU for long-term biomedical applications.

Main Methods:

Fluorinated PU (F-PCU) synthesized using a prepolymer method with a fluorinated diol and ordered hard-segment extender.
Characterization of chemical structure, thermal behavior, and mechanical properties.
Evaluation of surface properties (water contact angle) and biological performance (protein adsorption, platelet adhesion, cytotoxicity assays).

Main Results:

Fluorinated side chains preferentially enriched at the surface, creating a low-energy, hydrophobic interface.
F-PCU demonstrated excellent mechanical properties (tensile strength 49.5 MPa, elongation at break 965%).
Significantly reduced protein adsorption and platelet adhesion, with maintained cytocompatibility, indicating improved hemocompatibility.

Conclusions:

Integrating ordered hard segments with fluorinated side chains is an effective strategy for optimizing bulk and surface properties.
F-PCU exhibits promising potential for long-term biomedical applications due to its improved hemocompatibility.
The developed F-PCU offers a viable solution to overcome limitations of traditional polyurethanes in medical devices.