Table 2

Atomic concentration of selected elements determined in surface layer of polymers using XPS
Substrate Treatment (s) Atomic concentration (%)
C O N
HDPE 0 100.0 - -
300 81.8 16.8 1.4
300/BSA 67.9 18.1 14.0
PLLA 0 63.6 36.4 -
300 65.2 33.3 1.5
300/BSA 69.4 17.2 13.4

The atomic concentration of the carbon (C(1 s)), oxygen (O(1 s)), and nitrogen (N(1 s)) in the HDPE and PLLA surface layers of pristine (0), plasma-treated for 300 s (300), and BSA-grafted (300/BSA) was determined by XPS.

Kasálková et al.

Kasálková et al. Nanoscale Research Letters 2014 9:161   doi:10.1186/1556-276X-9-161

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