Related Experiment Video
Updated: Aug 6, 2026
08:50
Stabilizing Hepatocellular Phenotype Using Optimized Synthetic Surfaces
Published on: September 26, 2014
Surface modification of a polycarbonate-urethane using a vitamin-E-derivatized fluoroalkyl surface modifier
M J Ernsting1, R S Labow, J P Santerre
1Institute for Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada.
Journal of Biomaterials Science. Polymer Edition
|February 12, 2004
Summary
Fluorinated surface-modifying macromolecules (SMMs) with vitamin E offer enhanced protection for polyurethanes. This bioactive SMM reduces material degradation and shows potential for combating oxidative stress in biological systems.
Area of Science:
- Polymer Chemistry
- Materials Science
- Biomaterials
Background:
- Fluorinated surface-modifying macromolecules (SMMs) reduce polyurethane (PU) degradation by shielding sensitive groups.
- Extending SMMs to deliver bioactive moieties offers a novel approach to material protection.
Purpose of the Study:
- To synthesize and characterize a vitamin E-coupled SMM as a model for bioactive SMMs.
- To evaluate the protective effects of the vitamin E SMM against oxidative degradation.
Main Methods:
- Synthesis of SMM using lysine diisocyanate (LDI), polycarbonate diol (PCN), and a fluoroalcohol, with vitamin E coupled via LDI derivatization.
- Physical characterization using gel-permeation chromatography (GPC).
- Assessment of antioxidant activity and polymer degradation using sodium hypochlorite (NaOCl) and scanning electron microscopy (SEM).
Main Results:
- The vitamin E-SMM was successfully synthesized and characterized.
- The fluoro-component of the SMM reduced PU damage.
- The addition of vitamin E provided an additional protective effect against oxidative degradation.
Conclusions:
- Bioactive SMMs, exemplified by the vitamin E-coupled SMM, can enhance the protective properties of polyurethanes.
- This approach shows promise for protecting materials against oxidative damage, potentially including superoxide anions generated by macrophages.
