Figure 4

IR spectra. (i) PS oxidized shown as (a), PS-DMSA functionalization using APDEMS as linker (b), and PS DMSA-functionalization using APTES as linker (c); (ii) deconvoluted peak for amide band, zoom of spectra b; (iii) deconvoluted peak of the zoom of spectra c; (iv) deconvoluted peak at the 900 to 1,300 cm⁻¹ PS-DMSA functionalization using APDEMS as linker; and (v) deconvoluted peak at the 900 to 1,300 cm⁻¹ PS-DMSA functionalization using APTES as linker.