Complexation and blending of starch, poly(acrylic acid), and poly(N-vinyl pyrrolidone)

Water-Soluble Pressure-Sensitive Adhesives Containing Carboxymethyl Starch with Improved Adhesion to Paper

“…It is known that physical crosslinking via hydrogen bonds chain beneficially affected tack as well as shear strength properties [6]. The formation of the interpolymer complexes by hydrogen bonds between native starch and PAA has been reported [21]. However, applying in this work carboxymethylated starch was beneficial because of its higher adhesiveness as well as lower tendency to retrogradation than native starch [13].…”

Graft copolymerization of acrylic acid onto hydrolyzed potato starch using various initiators

“…Starch hydrolysis [8,9]: Starch hydrolysis was carried out in aqueous 1 M hydrochloric acid solution at 6°C with the addition of starch slurry. After reaction time expired, reaction product was precipitated in 100 mL ethyl alcohol and neutralized with diluted 1% sodium carbonate solution, washed with distilled water and finally dried in electric oven at 60°C for 3 h. Hydrolysis was carried out with vigorous stirring on magnetic stirrer.…”

“…Cyclic structure and many hydroxyl groups make starch material brittle and rigid. Therefore, starch films are not flexible and adhesion to surfaces is never good enough [1]- [3].…”

Radiation synthesis and characterization of poly(vinyl alcohol)/poly(N-vinyl-2-pyrrolidone) based hydrogels containing silver nanoparticles

“…Thus PVA was to be crosslinked by gamma irradiation which also sterilized the materials [10]. PVP is a hydrogel that has been used for a number of biomedical applications due to its remarkable properties, such as high hydrophilicity, complexing ability and biocompatibility [11][12][13]. To improve some of the biomedical properties of PVA hydrogels, a blend of PVA and PVP has been prepared and study the properties of hydrogels based upon crosslinked network gels of PVA and PVP.…”