Tag Archives: poly(acrylic acid)

Water-soluble branched copolymers dextran-polyacrylamide and their anionic derivates as matrices for metal nanoparticles in situ synthesis

Water-soluble branched copolymers dextran-polyacrylamide and their anionic derivates as matrices for metal nanoparticles in situ synthesis BEZUGLY M., KUTSEVOL N., RAWISO M., BEZUGLA T. Please cite as: CHEMIK 2012, 66, 8, 862-867 Metal nanoparticles were synthesized in water-soluble polymer matrices with different internal macromolecule structures. Linear Polyacrylamide (PAA) and branched star-like copolymers Dextrangraft- Polyacrylamide (D-g-PAA) and their anionic derivatives were used for in situ synthesis of Ag and Pd nanosystems. The influence of the matrix nature and internal structure of macromolecules in solution on the nanoparticles formation was studied. Keywords: branched copolymers, dextran, polyacrylamide, polyacrylic acid, nanoparticles Read more: pdf-icon...
Read more

The synthesis of poly(acrylic acid)-bentonite and polyacrylamide-bentonite composites for adsorption applications

The synthesis of poly(acrylic acid)-bentonite and polyacrylamide-bentonite composites for adsorption applications NATKAŃS KI P., BI AŁAS A., KUŚTROWS KI P. Please cite as: CHEMIK 2012, 66, 7, 742-749 Raw bentonite was modified by introducing to its interlayer spaces hydrogel chains by intercalation polymerization. Poly(acrylic acid) or polyacrylamide were used as organic modifiers. The structure of the obtained compounds was examined by means of powder X-ray diffraction and IR spectroscopy. The performed modification resulted in a significant increase in the sorption capacity of the material in respect of Fe(III) cations. Keywords: bentonite, hydrogel, poly(acrylic acid), polyacrylamide, intercalation, Fe(III) ion adsorption Read more: pdf-icon...
Read more

Preparation of innovative hydrogel wound dressings based on poly(acrylic acid)

Katarzyna BIALIK-WĄS, Bożena TYLISZCZAK, Edyta WILK, Krzysztof PIELICHOWSKI ? Department of Chemistry and Technology of Polymers, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Cracow, Poland Abstract: This paper describes new method of preparation of poly(acrylic acid) ? based hydrogel materials under microwave irradiation. The application of poly(ethylene glycol) (PEG), biodegradable and non-toxic polymer, which is widely used in medicine and pharmacy, enabled to control the degree of swelling and degradation of poly(acrylic) matrix. The obtained acrylic hydrogels modified by PEG were investigated towards: swelling ability in distilled water, 0.9% of NaCl solution and 0.9% of MgCl2 solution, degradation in simulated body fluids (SBF and Ringer?s solution) and the thermal stability by thermo-gravimetric analysis (TGA). Please cite as: CHEMIK 2013, 67, 2, 99-104 1. Introduction Nowadays polymers are widely applied as biomedical materials, because they have the following characteristics: biocompatibility, biophosphates, bioactivity, non-toxicity, chemical resistance. Among them important groups represent the hydrogels, whose dynamic development began in 1960. The great turning point was the...
Read more