Water binding through polyacrylamide hydrogel and the influence of its preliminary saturation by Enoxil
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541.64:539.2 (5)
Chimie. Cristalografie. Mineralogie (599)
Proprietăţile şi structura sistemelor moleculare (82)
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TUROV, Volodymyr; BOGATYREV, Viktor; KRUPSKA, Tetyana; GALABURDA, Mariia; LUPASCU, Tudor; POVAR, Igor; KOKOSHA, Natalia. Water binding through polyacrylamide hydrogel and the influence of its preliminary saturation by Enoxil. In: Chemistry Journal of Moldova. 2018, nr. 1(13), pp. 87-94. ISSN 1857-1727.
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Chemistry Journal of Moldova
Numărul 1(13) / 2018 / ISSN 1857-1727 /ISSNe 2345-1688

Water binding through polyacrylamide hydrogel and the influence of its preliminary saturation by Enoxil


CZU: 541.64:539.2
DOI: 10.19261/cjm.2017.459
Pag. 87-94

Turov Volodymyr1, Bogatyrev Viktor1, Krupska Tetyana1, Galaburda Mariia1, Lupascu Tudor2, Povar Igor2, Kokosha Natalia3
 
1 ”O.O. Chuyko” Institute of Surface Chemistry, National Academy of Sciences of Ukraine,
2 Institute of Chemistry of the Academy of Sciences of Moldova,
3 ”International Center for Medical Technologies Implementation” LTD
 
Disponibil în IBN: 7 iulie 2018


Rezumat

The state of water in a polyacrylamide gel has been studied by the 1H NMR spectroscopy. It has been shown that water is in a strongly associated state in the form of clusters with radius is in the range of R= 0.6-30 nm. The introduction of chloroform into the gel increases the binding of absorbed water, which indicates the effect of CDCl3 on the structure of water-filled cavities formed by the polymer linkage. Trifluoroacetic acid (TFA) reduces the interaction of the polymer with water, probably due to its binding to nitrogen-containing groups. Even more the interphase energy of water decreases in the presence of Enoxil. This decrease makes it possible to determine the free energy of the interaction of Enoxil- polyacrylamide gels, which is maximal in air and decreases in the presence of CDCl3 and TFA.

Cuvinte-cheie
Cluster, Enoxil, 1H NMR spectroscopy, polyacrylamide gel, polymer linkage.