Uptake of Basic Blue 17 from aqueous solutions by using chemically crosslinked polyelectrolyte AAm/AASS hydrogels

Üzüm, Ömer Barış; Karadağ, Erdener

doi:10.1007/s10450-006-0140-5

Cited by 17 publications

(1 citation statement)

References 32 publications

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“…Several studies have been reported on the properties of hydrogels as a function of their ionic or hydrophilic group content [5][6][7][8][9][10][11] . Increasing number of ionic or hydrophilic groups in the hydrogels is known to increase their swelling capacity.…”

Section: Introductionmentioning

confidence: 99%

Equilibrium Swelling Studies of Highly Swollen Acrylamide/Thiosinamine Hydrogels

Üzüm¹,

Kundakcı²,

Karadağ³

2009

Polymer-Plastics Technology and Engineering

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Section: Introductionmentioning

confidence: 99%

Equilibrium Swelling Studies of Highly Swollen Acrylamide/Thiosinamine Hydrogels

Üzüm¹,

Kundakcı²,

Karadağ³

2009

Polymer-Plastics Technology and Engineering

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Adsorption of nile red by poly(N‐isopropylacrylamide) gels in binary water/tetrahydrofuran mixtures

Thivaios

Bokias

2010

J of Applied Polymer Sci

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The adsorption of Nile Red by poly(N-isopropylacrylamide) (PNIPAM) gels in binary water/tetrahydrofuran solutions was investigated using absorption spectrophotometry as a function of the volume fraction of THF, u. Due to the cononsolvency abilities of such binary solvent mixtures, deswelling of the PNIPAM gels is observed in water-rich mixtures, 0 u 0.6, while the gels reswell for u > 0.6. The position of the absorption band of Nile Red before and after equilibration with the PNIPAM gels indicates that the composition of the external solvent mixture is not practically influenced by the swelling process.On the other hand, it is found that the gels can effectively adsorb Nile Red in water-rich mixtures (u < 0.6), whereas no significant adsorption was observed in tetrahydrofuran-rich mixtures. In fact, about 80% of the dye is adsorbed by the PNI-PAM gels, at u ¼ 0.2. Under these conditions, the rather shrunk PNIPAM gel offers a more convenient less polar environment for Nile Red than the water-rich bulk solvent. V C 2010Wiley Periodicals, Inc. J Appl Polym Sci

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Functionalization of Hydrogels Based on N‐Isopropyl‐acrylamide and Cationic Surfactant Monomers upon Electrostatic Self‐Assembly

Friedrich¹,

Trinker²,

Tieke³

2010

Macromolecular Symposia

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Summary: Positively charged copolymer hydrogels based on N‐isopropyl‐acrylamide (NiPAAm) and a cationic surfactant monomer (surfmer) were functionalized upon electrostatic self‐assembly of functional organic or inorganic complex counterions in the gel. As cationic surfmers 11‐acryloylundecyltrimethylammonium bromide (AUTMAB) or 11‐methacryloyl‐undecyltrimethylammonium bromide (MUTMAB) were used. The hydrogels were prepared from a micellar aqueous solution of the surfmer and NiPAAm either upon 60Co‐gamma irradiation, or upon chemical cross‐linking using methylenebisacrylamide as cross‐linker and 1,4‐diaminobutane as accelerator. Electrostatic self‐assembly was facilitated utilizing the thermoresponsive swelling and shrinking of the hydrogel. Several examples of gel functionalization are described such as in‐situ preparation of Prussian Blue and Pd0 nanoparticles, and induction of fluorescent properties. The catalytic activity of the palladium‐containing gel was studied by investigating the reduction of 4‐nitrophenol (4‐NP) with sodium borohydride as a model reaction. Fluorescent gels can be prepared upon exchange of bromide against 1‐pyrenesulfonate ions in the gel.

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Uptake of Basic Blue 17 from aqueous solutions by using chemically crosslinked polyelectrolyte AAm/AASS hydrogels

Abstract: In this study,

Cited by 17 publications

References 32 publications

Equilibrium Swelling Studies of Highly Swollen Acrylamide/Thiosinamine Hydrogels

Equilibrium Swelling Studies of Highly Swollen Acrylamide/Thiosinamine Hydrogels

Adsorption of nile red by poly(N‐isopropylacrylamide) gels in binary water/tetrahydrofuran mixtures

Functionalization of Hydrogels Based on N‐Isopropyl‐acrylamide and Cationic Surfactant Monomers upon Electrostatic Self‐Assembly

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