An Investigation of the Surface Chemistry of a Polyetherurethaneurea Biomaterial Using XPS
作者:
Stephen C. Porter,
Buddy D. Ratner,
期刊:
Surface Science Spectra
(AIP Available online 1996)
卷期:
Volume 4,
issue 1
页码: 90-95
ISSN:1055-5269
年代: 1996
DOI:10.1116/1.1247809
出版商: American Vacuum Society
关键词: polyurethane;biomaterial;XPS;polyetherurethaneurea
数据来源: AIP
摘要:
A poly(tetramethylene oxide) [PTMO] based polyetherurethaneurea (PEUU), produced by Polymer Technology Group Inc. (Emeryville, CA) as a Primary Reference Material, was spin-cast from a 3% (w/v) DMAc solution onto a glass cover slip. The polymer coating was analyzed at ambient temperature by XPS using a 55° take-off angle. An elemental survey scan shows the presence of C, N, and O (no trace elements were detected). The C 1sspectrum shows a nearly equal concentration of ether and hydrocarbon environments, suggesting that surface localization of the PTMO soft segment is occuring. A broadened peak at higher binding energy (~289.1 eV) is indicative of the presence of both urea and urethane nitrogens. The N 1speak location suggests that there is a greater contribution from urea groups. The dominant contributors to the O 1sspectra are ether functionalities. The urea and urethane contributions are apparent as high and low binding energy tails but are too small to be resolved accurately.
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