Biomedical Engineering Reference
In-Depth Information
3.3 Oxidation cascade in UHMWPE.
which are esters of cholesterol. These compounds can show up as oxidation in
the FTIR analysis of components (James et al., 1993), therefore, oxidation is
measured after extraction of extractable species from UHMWPE without
changing the morphology of the polymer by a suitable organic solvent with a
low boiling point, commonly hexane or heptane.
Although the intermediate hydroperoxides are not detectable by FTIR, they
can be stained by nitric oxide gas to give primary nitrates, which can then be
