Synthesis and characterization of PEG-like structures on nitinol surface under ECR-cold-plasma

Abstract

The synthesis and characterization of PEG-like macromolecular structures on Nitinol surface from tri (ethylene glycol) dimethyl-ether under ECR-cold-plasma conditions were discussed. It was demonstrated that based on high-resolution ESCA, ATR-FTIR and contact angle investigations the deposited PEG-like layers are composed mainly of −CH₂−CH₂−O− linkages. These structures have a relatively low contact angle. Compared to the unmodified surfaces, the plasma-treated Nitinol, surfaces are more hydrophilic. Plasma enhanced coatings of PEG-like layers can prevent Ni ion from releasing, thereby improving the biocompatibility of Nitinol.

Keywords

cold-plasma / Nitinol / modification / PEG-like structures

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