Quantitative Description Of The Morphology
Of Polyurethane Nanocomposites For
Medical Applications
Author(s)
J. Ryszkowska & B. Waśniewski
Abstract
This paper presents the application of stereology methods to the description of
morphological properties of polyurethane nanocomposites for medical
applications. The study of the cross-section surface structure of the obtained
materials was performed by Atomic Force Microscopy. The volume of hard
phase agglomerate was used to evaluate the degree of phase separation of the
examined nanocomposites. The relationships between the domain agglomerate
characteristics and the properties of nanocomposites obtained from them were
analysed.
The results showed that nanocomposites with non-modified nanosilica
dioxide (SiO2) and nanosilica dioxide modified with NH2 groups differs from
polyurethane within the following properties: size and volume of the
agglomerates of the hard domains, biocompatibility, thermo-mechanical and
abrasive wear resistance.
Keywords: nanocomposites, polyurethane, structure, image analysis, biomedical
application
1 Introduction
Polyurethanes (PURs) and their nanocomposites are a versatile plastic material,
formulated to provide good biocompatibility, flexural endurance, high strength,
high abrasion resistance and processing versatility over a wide range of
applications [1]. The most common use in medical devices is in short-term
implants [2]. Polyurethane elastomers are linear segmented copolymers
Keywords
nanocomposites, polyurethane, structure, image analysis, biomedical
application
Related Book
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