Synthesis of carboxymethyl starch grafted poly (methacrylic acids) (CMS-g-PMAAs) and their application as an adsorbent for the removal of ammonia and phenol

In this study carboxymethyl starch grafted poly(methacrylic acids) (CMS-g-PMAAs) were synthesized by treating carboxymethyl starch with methacrylic acid in the presence of initiator potassium persulfate (KPS). The modified starches were characterized by proton nuclear magnetic resonance (1H NMR) and fourier-transform infrared (FT-IR) spectroscopy. The crystallinity of the modified starches was analyzed by x-ray diffraction (XRD) while thermal...