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Electric field-assisted orientation of short phosphate glass fibers on stainless steel for biomedical applications

Chen, Qiang; Jing, Jiajia; Qi, Hongfei; Ahmed, Ifty; Yang, Haiou; Liu, Xianhu; Lu, T. L.; Boccaccini, Aldo R.

Authors

Qiang Chen

Jiajia Jing

Hongfei Qi

Haiou Yang

Xianhu Liu

T. L. Lu

Aldo R. Boccaccini



Abstract

Structural and compositional modifications of metallic implant surfaces are being actively investigated to achieve improved bone-to-implant bonding. In this study, a strategy to modify bulk metallic surfaces by electrophoretic deposition (EPD) of short phosphate glass fibers (sPGF) is presented. Random and aligned orientation of sPGF embedded in a poly(acrylic acid) matrix is achieved by vertical and horizontal EPD, respectively. The influence of EPD parameters on the degree of alignment is investigated to pave the way for the fabrication of highly aligned sPGF structures in large areas. Importantly, the oriented sPGF structure in the coating, owing to the synergistic effects of bioactive composition and fiber orientation, plays an important role in directional cell migration and enhanced proliferation. Moreover, gene expression of MC3T3-E1 cells cultured with different concentrations of sPGF is thoroughly assessed to elucidate the potential stimulating effect of sPGF on osteogenic differentiation. This study represents an innovative exploitation of EPD to develop textured surfaces by orientation of fibers in the macroscale, which shows great potential for directional functionalization of metallic implants.

Journal Article Type Article
Publication Date Apr 11, 2018
Journal ACS Applied Materials & Interfaces
Print ISSN 1944-8244
Electronic ISSN 1944-8252
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 10
Issue 14
Pages 11529-11538
APA6 Citation Chen, Q., Jing, J., Qi, H., Ahmed, I., Yang, H., Liu, X., …Boccaccini, A. R. (2018). Electric field-assisted orientation of short phosphate glass fibers on stainless steel for biomedical applications. ACS Applied Materials and Interfaces, 10(14), 11529-11538. doi:10.1021/acsami.8b01378
DOI https://doi.org/10.1021/acsami.8b01378
Publisher URL https://pubs.acs.org/doi/abs/10.1021/acsami.8b01378

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