TABLE 1.

XPS results of PVA films modified with different concentration of GFPGER.

Atomic %	C	O	N
PVA	76.8 ± 2.0	23.1 ± 2.0	ND
GFPGER0	73.9 ± 1.9	22.7 ± 2.1	3.3 ± 0.3
GFPGER15	71.4 ± 1.0	23.9 ± 0.8	4.6 ± 0.2
GFPGER30	74.0 ± 1.6	21.8 ± 1.6	4.11 ± 0.1
GFPGER60	72.2 ± 1.7	23.2 ± 1.9	4.6 ± 0.3
GFPGER120	78.6 ± 2.2	17.3 ± 1.9	4.17 ± 0.3

Atomic percentage of carbon, nitrogen, and oxygen. Data (n = 3) are shown as mean ± SD (ND = not detected).