Table 1.

I (%) and contents of –C(O)H and –COOH groups in the graft copolymers.

Sample	–C(O)H (%)	–COOH (%)	I (%)
NCS	0.1643 ± 0.0127	0.1510 ± 0.0804	79.5
NMES	ND	0.3144 ± 0.0001	85.4
NMUS	0.0224 ± 0.0001	0.2676 ± 0.0410	89.1
CCS	0.047 ± 0.063	0.441 ± 0.017	98.4
CMES	0.015 ± 0.037	0.258 ± 0.009	89.5
CMUS	0.046 ± 0.034	0.157 ± 0.009	87.7

ND: No detected. The results are the average of the triplicate determination and are expressed as mean ± standard deviation.