| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5206542 | Polymer Testing | 2013 | 6 Pages |
Abstract
The aim of the present study is to evaluate the performance of chitosan/hydroxyapatite (CTS/HA) coatings on ultrahigh molecular weight polyethylene (UHMWPE). We focused on adhesion measurements, micro-hardness indentation, friction and wear tests. Using commercial compounds of medical grade, CTS/HA composite was prepared by a simple mixture using acetic acid as solvent. The CTS/HA solution obtained was used to prepare coatings on UHMWPE substrates by the immersion method. Scanning electronic microscopy (SEM) results showed that the composite coating had flake-like morphology characteristic of chitosan and calcium phosphate powders with a porous structure. The adhesion strength between CTS-HA coating and UHMWPE was approximately 0.15Â MPa, according the ASTM D5179 method. The micro-hardness of CTS/HA coating on UHMWPE was evaluated by using a Vickers hardness tester, while friction and wear were studied by a pin-on-disk method in dry conditions.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
A. Arizmendi-Morquecho, A. Chávez-Valdez, C.H. Navarro, K.J. Moreno,