Recent Trends in Hydrogels Based on Starchgraft-Acrylic Acid: A Review

Abstract

This paper presents a reviewal profile of water absorbing resins based on graft copolymers of acrylic acid and gelatinised starch. It first elaborates on the synthesis of these hydrogels, use of these hydrogels in a variety of commercial applications, and the role of hydrogen bonding in the water absorbing capacity of these hydrogels. It describes the exact experimental conditions for producing hydrogels based on gelatinised maize starch grafted with acrylic acid showing maximum water absorption of 260 g/g.

Synthesis and characterization of membranes obtained by graft copolymerization of 2-hydroxyethyl methacrylate and acrylic acid onto chitosan

“…With this purpose, new material was synthesized by grafting vinyl monomers, AA and HEMA, onto chitosan. The poly(AA), which is biocompatible and with antibacterial properties, is widely used in adhesives and super absorbents materials due to its pendant carboxylic groups (Lee et al, 1999(Lee et al, , 2005Athawale and Lele, 2001). Polymers grafted by AA become highly hydrophilic materials and interesting matrixes for drug delivery systems.…”

Water absorption, retention and the swelling characteristics of cassava starch grafted with polyacrylic acid

“…Ample literature reports and both older and recent patents (Chambers, 2010;Masuda, Nishida, & Nakamura, 1978) can be found on superabsorbent production based on starches, e.g. from wheat, corn or potato (Athawale & Lele, 2000;Athawale & Lele, 2001;Hashem, Afifi, El-Alfy, & Hebeish, 2005;Masuda et al, 1978;Qunyi & Ganwei, 2005;Weaver et al, 1977;Wu, Wei, Lin, & Lin, 2003). The use of cassava starch for this application is relatively novel since only few reports have appeared so far (Lanthong, Nuisin, & Kiatkamjornwong, 2006;Parvathy & Jyothi, 2012;Sangsirimongkolying, Damronglerd, & Kiatkamjornwong, 1999).…”

Poly(2‐oxazoline)s: Alive and Kicking

“…[47] In future work, such 'green' 2-oxazoline monomers will also be incorporated into the library synthesis and structure-property investigations conducted. The use of renewable feedstock in polymer science [48] includes the use of, for example, starch, [49,50] saccharides [51,52] and fatty acids. [53,54] We have chosen to investigate the microwave-assisted polymerization of an unsaturated soy bean fatty acid based 2-oxazoline monomer (SoyOx; first reported by Henkel KGaA).…”