Please use this identifier to cite or link to this item:
https://open.uns.ac.rs/handle/123456789/3711
DC Field | Value | Language |
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dc.contributor.author | Zdravković, A. | en_US |
dc.contributor.author | Nikolić, Lj. | en_US |
dc.contributor.author | Ilić-Stojanović, S. | en_US |
dc.contributor.author | Manojlović Nikolić, V. | en_US |
dc.contributor.author | Savić, M. | en_US |
dc.contributor.author | Kapor, Agneš | en_US |
dc.date.accessioned | 2019-09-23T10:29:32Z | - |
dc.date.available | 2019-09-23T10:29:32Z | - |
dc.date.issued | 2017-01-01 | - |
dc.identifier.issn | 0367598X | en_US |
dc.identifier.uri | https://open.uns.ac.rs/handle/123456789/3711 | - |
dc.description.abstract | © 2017, Association of Chemists and Chemical Engineers of Serbia. All rights reserved. Hydrogels are synthesized by the method of radical polymerization of monomers: N-isopropylacrylamide (NIPAM) and acrylic acid (AA). Characterization of poly(N-isopropylacrylamide- co-acrylic acid) hydrogels, p(NIPAM/AA), has been performed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and by determination of the swelling behaviour in aqueous solutions at different temperatures (25, 31 and 37 °C) and pH values (2.2, 4.5, 6 and 6.8). After lyophilisation in the solution at pH 6 and temperature of 25 °C, p(NIPAM/AA) hydrogels have rapidly reached equilibrium degree of swelling, αe, in comparison to non-lyophilized samples. The mechanism of solvent transport within matrix in lyophilized samples corresponds to less Fickian diffusion, whereas Super case II diffusion is characteristic for non-lyophilized samples. p(NIPAM/AA) hydrogel with 1.5 mol% of ethylene glycol dimethacrylate (EGDM) at the temperature of 25 °C and pH 6.8, has reached the highest swelling equilibrium degree, αe = 259.8. The results of swelling studies have shown that p(NIPAM/AA) hydrogels can be classified as superabsorbent polymers (SAPs). For the evaluation of pH and temperature influences on synthesized hydrogels swelling, a full three-level experimental design has been used. Two-factor interaction model (2FI) is the most optimal model of a full three-level experimental design for representing the swelling equilibrium degree of p(NIPAM/AA) hydrogels as a function of investigated parameters, i.e., temperature and pH. | en |
dc.relation.ispartof | Hemijska Industrija | en |
dc.title | The evaluation of temperature and pH influences on equilibrium swelling of poly(N-isopropylacrylamide-co-acrylic acid) hydrogels | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.doi | 10.2298/HEMIND161018001Z | - |
dc.identifier.scopus | 2-s2.0-85035114347 | - |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/85035114347 | - |
dc.description.version | Unknown | en_US |
dc.relation.lastpage | 405 | en |
dc.relation.firstpage | 395 | en |
dc.relation.issue | 5 | en |
dc.relation.volume | 71 | en |
item.grantfulltext | none | - |
item.fulltext | No Fulltext | - |
Appears in Collections: | Naučne i umetničke publikacije |
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