Abstract
We propose that polyvinyl formal (PVF) be used for artificial articular cartilage in total joint replacement. The PVF is made from polyvinyl alcohol (PVA). We use formaldehyde as cross-linker. We produced three types of PVF that has different rate of formaldehyde. A ball-on-plate reciprocating machine was used for investigation of the wear characteristic of PVF. The PVF plate was 3.0mm thick and stainless steel ball has a radius of 30mm. The constant load was 137N and average sliding speed was 20mm/sec. The difference of rate of the formaldehyde had an influence on wear characteristics of the PVF. If the rate of formaldehyde was low, the PVF did not have enough mechanical strength for using as an artificial articular cartilage. When the rate of formaldehyde was too high, wear resistance of the PVF was law.
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