Photocatalytic Surface Modification of PI Film for Electroless Copper Plating

Table 3

The contents of carbon groups on the PI film surface before and after photocatalytic treatment (treatment time: 30 min, : 1.0 g/L).

UV power	C-C, C-H, C=C (%)	C-O, C-N (%)	N(C=O)2 (%)	(%)	-COOH (%)
0	53.7	38.7	14.8	2.8	0
100 W	48.0	37.6	7.3	2.2	4.9
300 W	46.5	38.3	6.8	2.3	6.1