Temperature‐responsive linear polyelectrolytes and hydrogels based on [2‐(methacryloyloxy)ethyl] trimethylammonium chloride and N‐isopropylacrylamide and their complex formation with potassium hexacyanoferrates (II, III)

Abstract

Water-soluble temperature-responsive polyelectrolytes and hydrogels have been synthesized by ␥-radiation copolymerization of [2-(methacryloyloxy)-ethyl]trimethylammonium chloride with N-isopropylacrylamide. Complex formation of soluble copolymers with potassium hexacyanoferrates (II, III) was studied in aqueous solutions. It was shown that, depending on the concentration and temperature, the formation of soluble or insoluble polycomplexes is observed. The hydrogels show good ability to absorb potassium hexacyanoferrates (II, III) from aqueous solutions. Sorption ability of hydrogels depends on the content of cationic monomer in copolymer and the nature of coordination ion.

Novel temperature‐responsive water‐soluble copolymers based on 2‐hydroxyethylacrylate and vinyl butyl ether and their interactions with poly(carboxylic acids)

“…Water‐soluble polymers exhibiting lower critical solution temperature (LCST) in water have attracted considerable attention in recent years. Numerous applications of these polymers in controlled release systems,1–3 biotechnology,4 separation and enrichment technologies,5 and stabilization of colloids6, 7 have stimulated researchers to develop new polymers and to optimize the properties of well‐known systems.…”

Polyelectrolyte complexes of linear copolymers and hydrogels based on 2‐[(methacryloyloxy)ethyl]trimethylammonium chloride and N‐isopropylacrylamide

“…The synthesis of the linear copolymers was performed by the γ‐radiation copolymerization of MADQUAT with NIPAAM in 10% aqueous solutions, as described in refs. 10 and11. The copolymerization was conducted in sealed glass ampules with an MRX‐γ‐25M setup equipped with a 60 Co source with a dose rate of 0.16 Gy/s.…”

New Thermo-Sensitive Hydrogel Based on Copolymer of 2-hydroxyethyl Acrylate and Ethyl Acrylate

“…In particular, water-soluble polymers exhibiting lower critical solution temperature (LCST) are among the most interesting stimuli-sensitive materials due to numerous potential applications in controlled release systems [1], biotechnology [2], separation and enrichment technologies [3], and stabilization of colloids [4]. Pursuing these applications requires precise control over the properties of stimuli-responsive materials.…”