4.7 Article

Titanium surface-grafted zwitterionic polymers with an anti-polyelectrolyte effect enhances osteogenesis

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ELSEVIER
DOI: 10.1016/j.colsurfb.2023.113293

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Titanium; SI-ATRP; Zwitterionic polymers; Anti-polyelectrolyte effect; Osteogenesis

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In this study, a successful construction of zwitterionic copolymers (poly (sulfobetaine methacrylate-co-butyl acrylate) (pSB) coating on the surface of a hydroxylated titanium sheet using surface-initiated atom transfer radical polymerization (SI-ATRP) was achieved. The successful preparation of the coating was confirmed by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), and water contact angle (WCA) analysis. The swelling effect caused by the antipolyelectrolyte effect was observed in vitro, and the coating promoted the proliferation and osteogenesis of MC3T3-E1. Therefore, this study provides a new strategy for designing multifunctional biomaterials for implant surface modifications.
Zwitterionic polymers have attracted considerable attention because of their anti-adsorption and unique antipolyelectrolyte effects and was widely used in surface modification. In this study, zwitterionic copolymers (poly (sulfobetaine methacrylate-co-butyl acrylate) (pSB) coating on the surface of a hydroxylated titanium sheet using surface-initiated atom transfer radical polymerization (SI-ATRP) was successfully constructed. X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR) and Water contact angle (WCA) analysis proved the successful preparation of the coating. The swelling effect caused by the antipolyelectrolyte effect was reflected in the simulation experiment in vitro, and this coating can promote the proliferation and osteogenesis of MC3T3-E1. Therefore, this study provides a new strategy for designing multifunctional biomaterials for implant surface modifications.

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