pH-sensitive starch hydrogels via free radical graft copolymerization, synthesis and properties

Synthesis and characterization of graft copolymers of N-Vinyl-2-Pyrrolidone onto guar gum for sorption of Fe2+ and Cr6+ ions

“…Among the methods of modification of polymers, grafting is one of the promising methods to impart a variety of functional groups to a polymer. Literature survey reveals that recently a good amount of work has been carried out on grafting of various vinyl monomers onto various backbone polymers using different initiating systems (Al-Karawi, Ai-Qaisi, Abdullah, Al-Mokaram, & Al-Heetimi, 2011;Carreira, Gonç alves, Mendonç a, Gil, & Coelho, 2010;Kumar, Singh, & Ahuja, 2009;Saboktakin, Maharramov, & Ramazanov, 2009;Sand, Yadav, & Behari, 2010;Sharma & Mishra, 2010;Singh, Chauhan, Kumar, & Chauhan, 2007;Singha & Rana, 2010;Ye et al, 2010;Zhang et al, 2009). Guar gum is a high molecular weight hydrocolloidal hetero-polysaccharide composed of galactan and mannan units.…”

Superabsorbent hydrogel nanocomposites based on starch-g-poly(sodium acrylate) matrix filled with cellulose nanowhiskers

“…High viscosity, thermal stability, biodegradability, good film forming properties and water absorption capacity are some of the properties shown by the starch graft copolymers. Graft copolymers find various applications in industry as flocculants, wastewater treatment, and heavy metal ion removal, for sizing cotton, as mulch films, in oil drilling, as biodegradable polymers and in superabsorbents (Zhou et al 2011;Saboktakin et al 2009). …”

Crosslinkable potato starch-based graft copolymer emulsion for humidity controlling coatings

“…In order to improve properties or expand its application field, many chemical modifications [11][12][13][14][15][16][17] of starch have been carried out through hydroxyl groups. Particularly, graft copolymerization on starch [18][19][20][21][22] gives the possibility to synthesize new highly added value materials for various applications, which were applied for the textiles, composites, keeping the variation in the indoor climate and pH-sensitive starch hydrogels, respectively.…”