| Conţinutul numărului revistei |
| Articolul precedent |
| Articolul urmator |
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 1026 6 |
| Ultima descărcare din IBN: 2022-11-20 12:53 |
| Căutarea după subiecte similare conform CZU |
| 541.64:539.2 (6) |
| Chimie. Cristalografie. Mineralogie (2025) |
| Proprietăţile şi structura sistemelor moleculare (224) |
 SM ISO690:2012TUROV, 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. DOI: https://doi.org/10.19261/cjm.2017.459 |
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  Chemistry Journal of Moldova |
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| Numărul 1(13) / 2018 / ISSN 1857-1727 /ISSNe 2345-1688 | |
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| DOI:https://doi.org/10.19261/cjm.2017.459 | |
| CZU: 541.64:539.2 | |
| Pag. 87-94 | |
 Descarcă PDF |
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| 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. |
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| Cuvinte-cheie Cluster, Enoxil, 1H NMR spectroscopy, polyacrylamide gel, polymer linkage. |
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