Table 3.
Surface chemical composition of three types of paper.
| Paper Towel (PT) | BSA treated PT, air-dried (BSA-PTa) | BSA treated PT, Heated (BSA-PTh) | |||||
|---|---|---|---|---|---|---|---|
| Mean | Dev. | Mean | Dev. | Mean | Dev. | Chemical functionality | |
| C 1 | 0.193 | 0.002 | 0.498 | 0.033 | 0.517 | 0.000 | C-C, C-H |
| C 2 | 0.614 | 0.000 | 0.322 | 0.022 | 0.262 | 0.001 | C-O, C-N |
| C 3 | 0.180 | 0.001 | 0.167 | 0.013 | 0.201 | 0.004 | O-C-O, C = O, N-C = O |
| C 4 | 0.013 | 0.000 | 0.014 | 0.002 | 0.020 | 0.005 | O-C = O |
| N | 0.013 | 0.001 | 0.153 | 0.007 | 0.233 | 0.003 | N-C, N-C = O |
| O | 0.608 | 0.001 | 0.308 | 0.008 | 0.253 | 0.002 | |
| S | 0.001 | 0.000 | 0.006 | 0.000 | 0.010 | 0.000 | |
Data are presented as atomic ratios X/C, i.e., atomic concentrations of element/species X relative to that of carbon [mean values (+/– deviation) of measurements at two different locations on each sample].