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. Author manuscript; available in PMC: 2015 Nov 23.
Published in final edited form as: Acta Biomater. 2014 Aug 14;10(11):4639–4649. doi: 10.1016/j.actbio.2014.08.008

Table 1.

Surface composition analysis of polyurethane filmsa.

Samples C O N S P
PEUU-N1 74.3 ± 3.7 20.5 ± 1.3 3.3 ± 0.1 0.0 ± 0.0 0.0 ± 0.0
PEUU-N3 66.8 ± 5.2 22.7 ± 1.0 5.7 ± 0.4 0.0 ± 0.0 0.0 ± 0.0
PEUU-N5 63.7 ± 1.1 23.8 ± 0.8 8.1 ± 0.8 0.0 ± 0.0 0.0 ± 0.0
PEUU-PC1 70.0 ± 3.5 23.6 ± 2.5 3.1 ± 1.1 0.1 ± 0.1 0.3 ± 0.1
PEUU-PC3 68.5 ± 0.7 23.5 ± 0.5 6.1 ± 0.4 0.6 ± 0.1 0.7 ± 0.1
PEUU-PC5 67.5 ± 0.8 22.5 ± 1.0 7.7 ± 0.1 0.9 ± 0.1 0.9 ± 0.1
a

Atomic percentage determined by X-ray photoelectron spectroscopy (XPS), n=3.