Ionic poly hydrogels

Allcock, H. R., and Kwon, S., An ionically-crosslinkable poly-phosphazene Poly[di(carboxylatophenoxy)phosphazene] and its hydrogels and membranes. Macromolecules. 22. 75, 1989. 

Poly(L-lysine)-based hydrogel Ionic interaction pH [20]... 

Hydrogels that have the ability to respond to pH changes have been studied extensively over the years. These gels typically contain side ioni-zable side groups such as carboxylic acids or amine groups (Oppermann, 1992 Scranton et al., 1995). The most commonly studied ionic polymers include polyacrlyamide (PAAm), poly(acrylic acid) (PAA), poly(metha-crylic acid) (PMAA), poly (diethylaminoethyl methacrylate) (PDEAEMA), and poly(dimethylaminoethyl methacrylate) (PDMAEMA). 

Starodubtsev SG, Churochkina NA, Khokhlov AR (2000) Hydrogel composites of neutral and slightly charged poly(acrylamide) gels with incorporated bentonite. Interaction with salt and ionic surfactants. Langmuir 16(4) 1529-1534... 

Hitherto, there have also been some reports on the use of polymers containing ionic moieties except for polymeric ILs to functionalize CNTs [127-130]. For instance, Yoshida et al. [128] found that a slightly concentrated solution (20 g/L) of an ionic electrolyte of poly(pyridinium-l,4-diyl-iminocarbony 1-1,4-phenylene-methylene chloride) was most appropriate for stable dispersion of SWCNTs in water to form a SWCNT-containing gel. This ionic polymer, capable to act both as a dispersant and as a gelator, may contribute to the development of a novel hydrogel filled with CNTs for the biological, medical, and pharmaceutical applications. 

Bashir R, Hilt JZ, Elibol O, Gupta A, Peppas NA (2002) Micromechanical cantilever as an ultrasensitive pH microsensor. Appl Phys Lett 81(16) 3091-3093 Benoit D, Chaplinski V, Braslau R, Hawker CJ (1999) Development of a universal alkoxyamine for "living" free radical polymerizations. J Am Chem Soc 121 3904-3920 Caykara T, Kiper S, Demirel G (2006) Thermosensitive poly(N-isopropylacrylamide-co-acryl-amide) hydrogels synthesis, swelling and interaction with ionic surfactants. Eur Polymer J 42 348-355... 

Orakdogen N, Okay O (2006) Reentrant conformation transition in poly(N, N-dimethylacryla-mide) hydrogels in water-organic solvent mixtures. Polymer 47 561-568 Panayiotou M, Freitag R (2005) Influence of the synthesis conditions and ionic additives on the swelling behaviour of thermo-responsive polyalkylacrylamide hydrogels. Polymer 46 6777-6785... 

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