2015 (3) 11
https://doi.org/10.15407/polymerj.37.03.293
Organic-inorganics silsesquioxanes nanohybrides сompоsing quaternary amines
L.P. Robota, V. G. Sierov, V.I. Litviakov, Yu.V. Savelyev
Institute of Macromolecular Chemistry the NAS of Ukraine
48, Kharkivske shose, Kyiv, 02160, Ukraine
Polym. J., 2015, 37, no. 3: 293-298.
Section: Structure and properties.
Language: Russian.
Abstract:
Urethaneureasilsesquioxane precursors based on polyethylene glycol -1000 (PEG-1000), 1,6-hexamethylene diisocyanate (1,6-HMDI) and 3-aminopropyltriethoxysilane (APTES) as well as their analogues containing crownether and benzidine fragments in the chain have been obtained.
The biologically-active compound 1,2-ethylene-bis-(N-dimethyl-carbdecyloksimethyl)-carbmenthoxymethyl)-ammonium dichloride (ethonium) was introduced in dimethylformamide (DMFA) solutions of precursors at a molar ratio of precursor: ethonium of 1,0/0,5; 1,0/1,0 and 1,0/2,5. We used NN4F as catalyst for the hydrolytic polycondensation. Polyurethaneureasilsesquioxane films were prepared by gelling from solutions. The composition of precursors and their polycondensation products has been confirmed by IR spectroscopic studies. NMR studies have shown that the intermolecular interaction of the prepolymer and quaternary amine takes place primarily through the interaction of urea groups of the prepolymer and the amine anions in the absence of significant changes in the absorption region of urethane associates. Monitoring of the degree of release of 1,2-ethylene-bis-(N-dimethyl- dimethyl-carbdecyloksimethyl)- carbmenthoxymethyl)-ammonium dichloride in distilled water, was studied using the conductometric method.
Key words: polyurethane(urea)silsesquioxanes, crown ethers, non covalent interactions, quarternary amines.
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