2020 (3) 4
https://doi.org/10.15407/polymerj.42.03.191
THE INFLUENCE OF PLASTICIZER ON DYNAMIC CHARACTERISTICS AND SHORTRANGE ORDERING OF CROSSLINKED GLYCOPOLYMERS BASED ON WATER-SOLUBLE POLYSACCHARIDES
N.V. Kozak,
Institute of Macromolecular Chemistry NAS of Ukraine, 48, Kharkivske shose, Kyiv, 02160, Ukraine
E-mail: kozaksmalt@ukr.net
ORCID: 0000-0001-6200-4048
K.S. Didenko,
Institute of Macromolecular Chemistry NAS of Ukraine, 48, Kharkivske shose, Kyiv, 02160, Ukraine
ORCID: 0000-0002-6884-8433
S.D. Nesin,
Institute of Macromolecular Chemistry NAS of Ukraine, 48, Kharkivske shose, Kyiv, 02160, Ukraine
ORCID: 0000-0003-2162-3533
Polym. J., 2020, 42, no. 3: 191-198.
Section: Structure and properties.
Language: Ukrainian.
Abstract:
One of the important tasks of polymer science is synthesis of polymer materials based on renewable biocompatible sources, capable to biodestruction using simple environment friendly technology. The modification of water-soluble polysaccharides (such as xanthan and konjak glucomannan) by latent isocyanates allows obtaining polymer system (glycopolymers) which have ability to remove the organic pollution from contaminated water. Using cross-linked glycopolymers as adsorbents for water purification makes it interesting to investigate the effect of low molecular weight plasticizer on the peculiarities of structuring and dynamic characteristics of the system.
Using radiospectroscopy and X-ray diffraction data the influence has been analyzed of two low molecular hydroxyl-containing compounds on macro chains mobility and structuring of cross-linked glycopolymers based on water-soluble polysaccharides xanthan, konjac glucomannan and ε-caprolactam blocked -isocyanates. According to nitroxyl paramagnetic probe data it has been demonstrated the increase of molecular mobility of cross-linked glycopolymers based on konjac glucomannan after introduction of propane-1,3-diol. The short range ordering is compared of both initial polysaccharide and corresponding glycopolymers of various composition depending on polysaccharide structure. In addition the changes of glycopolymers short range ordering was shown in the presence of plasticizer.
Keywords: water-soluble polysaccharide, blocked isocyanate, plasticizer, nitroxyl paramagnetic probe, X-ray diffraction method.
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