Gas plasma etching of PEO/PBT segmented block copolymer films

Journal of Biomedical Materials Research. Part a
Mark B Olde RiekerinkJ Feijen

Abstract

A series of poly(ethylene oxide)/poly(butylene terephthalate) (PEO/PBT) segmented block copolymer films was treated with a radio-frequency carbon dioxide (CO(2)) or with argon (Ar) plasma. The effects of (preferential) etching on surface structure, topography, chemistry, and wettability were studied by scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy, and contact angle measurements. In all cases, a granular-type nanostructure was formed after prolonged CO(2) plasma etching. Ar plasma etching generally did not lead to significant changes in surface structure. Regarding surface chemistry, CO(2) plasma treatment caused surface oxidation and oxidative degradation of the films while Ar plasma etching resulted mainly in the preferential removal of PEO blocks. The wettability of all films significantly increased after plasma treatment because of the creation of polar functional groups at the surface. Preliminary goat bone-marrow cell compatibility experiments have shown that all plasma-treated PEO/PBT films induced a greatly enhanced cell adhesion and/or growth compared to untreated biomaterials. This improvement was attributed to changes in surface chemistry during plasma etching rather than to ...Continue Reading

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Citations

Feb 7, 2007·European Surgical Research. Europäische Chirurgische Forschung. Recherches Chirurgicales Européennes·A RingS Langer
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Jul 13, 2019·Frontiers in Bioengineering and Biotechnology·André F GirãoLorenzo Moroni
Jul 15, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Jordi Cabanas-DanésPascal Jonkheijm
Jan 16, 2021·ACS Applied Materials & Interfaces·Maria Cámara-TorresLorenzo Moroni
Oct 2, 2021·Frontiers in Bioengineering and Biotechnology·Gustavo A HigueraLorenzo Moroni

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