Table 1.

Materials surface characterization

Sample	Amino densities (μmol/mm2)	WCA (means ± SD)	ATR-FTIR
			Wavenumber (cm−1)	Peak value	Relative ratio of peak value	Peak area	Relative ratio of peak area
A(0.5% 6 h)	0.048 ± 0.006	34.8 ± 2.7	2,976	0.00081	1	0.08794	1
B(0.5% 12 h)	0.128 ± 0.014	45.1 ± 1.9	2,964	0.00272	3.35	0.25686	2.9
C(10% 2 h)	0.170 ± 0.010	61.3 ± 3.1	2,961	0.00358	4.42	0.33438	3.8
D(10% 12 h)	0.268 ± 0.013	86.2 ± 5.0	2,978	0.00972	12	1.15562	13.1

WCA, water contact angle; ATR-FTIR, attenuated total reflectance Fourier transform infrared spectroscopy