Preparation and performance of polypyrrole/polyester monofilament

In order to prepare an artificial hair for implantation,which has good cytocompatibility, polypyrrole / polyester monofilaments were prepared by liquid in-situ polymerization and their performance was tested using scanning electron microscopy,FT-IR spectroscopy and X ray photoelectron spectroscopy. The presence of polypyrrole was confirmed,and the influence of duration of alkali weight-reduction treatment on the coated polypyrrole content was investigated. Meanwhile,the mechanical properties of monofilaments after alkali treatment and before and after polypyrrole polymerization were analyzed. The cytocompatibility of the filaments was tested. The results showed that polypyrrole can be formed on the surface of polyester monofilaments with and without the alkali weight-reduction treatment, but the monofilaments subjected to the alkali weight-reduction treatment have higher polypyrrole content. The mechanical properties of the monofilaments were decreased after alkali treatment,but increased after polypyrrole polymerization. Furthermore,the cytocompatibility of polyester monofilaments improved after pyrrole polymerization.