pH- and thermosensitive nano(ferro)gels based on N-isopropylacrylamide and acrylic acid

TitlepH- and thermosensitive nano(ferro)gels based on N-isopropylacrylamide and acrylic acid
Publication TypeJournal Article
Year of Publication2017
AuthorsSamchenko, Yu.M, Kernosenko, LO, Kryklya, SO, Pasmurtseva, NO, Poltoratska, TP, Marynin, AI
Abbreviated Key TitleDopov. Nac. akad. nauk Ukr.
DOI10.15407/dopovidi2017.06.074
Issue6
SectionChemistry
Pagination74-81
Date Published6/2017
LanguageUkrainian
Abstract

Nanosized hydrogels based on thermosensitive poly-N-isopropylacrylamide, copolymers with acrylic acid, and their nanocomposites with incorporated magnetite nanoparticles (approximate particle size of 100-200 nm) are synthesized. It was shown that the hydrogel matrix size and the zeta potential of nanoparticles depend on the temperature and pH. The diameter of nanoparticles is reduced by 2-3 times, if the hydrogel is heated up to 32 °C, and by 3-5 times, if pH decreases below 5. This creates conditions for the controllable release of incorporated anticancer drugs (in particular, doxorubicin) and for using nanogels in therapeutic hypothermia. Incorporation of nanosized magnetite into the hydrogel matrices provides a controlled localization of therapeutic systems in close proximity to target organs by applying a low-intensity constant magnetic field.
Keywordsacrylic acid, doxorubicin, ferrogels, magnetite, N-isopropylacrylamide, smart, thermosensitive gels, zeta potential
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