Establishing Chemical Bond Layer of Poly(Ethylene Glycol) on NiTi Alloy Surface

Hong Yan Yu; Lian Cai Wang; Yan Li; Xin Miao  Zeng; Xin Qing Zhao

doi:10.4028/www.scientific.net/AMR.785-786.578

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Establishing Chemical Bond Layer of Poly(Ethylene Glycol) on NiTi Alloy Surface
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 785-786Establishing Chemical Bond Layer of Poly(Ethylene...

Establishing Chemical Bond Layer of Poly(Ethylene Glycol) on NiTi Alloy Surface

Abstract:

To get bioorganic surface with improving biological properties, NiTi shape memory alloy was bonded poly (ethylene glycol) (PEG) by sequentially piranha solution treating, silanizing, and then γ-ray irradiation induced grafting. Piranha solution treating gave hydroxylated surfaces for the benefit of next silanization. The trichlorovinylsilane (TCVS) was performed as a bridge to covalent bond treated NiTi substrates and PEG by γ-irradiation. X-ray photoelectron spectroscopy (XPS) was used to indicate that PEG was bonded on silanized NiTi surface by irradiation. Osteoblast culture of 1 day and methyl-thiazol-tetrazolium (MTT) assay showed that PEG bonded on NiTi surface enhanced cell proliferation and cell amount increased significantly with increasing the concentration of bonded PEG.

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Periodical:

Advanced Materials Research (Volumes 785-786)

Pages:

578-581

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.785-786.578

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Online since:

September 2013

Authors:

Hong Yan Yu*, Lian Cai Wang, Yan Li, Xin Miao Zeng, Xin Qing Zhao

Keywords:

Biomaterial, Irradiation Induced Grafting, NiTi Shape Memory Alloy, Organic Films, Surface Modification

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