Figure 2.
FTIR spectra of PAA-C(O)O-(CH2)6-N+(CH3)3-8% (a), PAA-C(O)O(CH2)6N+(CH3)3-10% (b), PAAC(O)O(CH2)12N+(CH3)3-8% (c), PAAC(O)O(CH2)12N+(CH3)3-14% (d) and PAA (e).
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