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Polyacrylamide is a water-soluble polymer that undergoes reactions typical of the amide group. The polymer in the solid state is brittle and not a good film former because of its relatively high glass transition temperature. In this chapter, an overview of acrylamide monomers and polymerization of acrylamide is presented in the chapter.
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The grafted product HPG-g-PAM showed best results as a flocculant for kaolin, silica and iron ore suspension which was even better than the commercial flocculants. Nayak et al. in 2002, synthesized hydroxypropyl guar gum-grafted-polyacrylamide by ceric ion induced redox polymerization technique.
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The results indicated that the copolymer exhibited: (1) a good dewatering efficiency over a wide pH range of 3.0-11.0, (2) superior sludge dewatering performance compared to those of polyaluminum chloride (PACl), polyacrylamide (PAM), ferric chloride, and (3) a discontinuous surface with many channels or voids that helps to mobilize the
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