Specific features of synthesis of network polymers based on tetrazolylethyl cellulose ethers by alkylation of tetrazole rings in the structure of the cellulose derivative with di- and polyfunctional oligomeric and polymeric oxiranecontaining compounds were studied. The influence exerted by the structure of the cross-linking agents on the time parameters of the network structure formation, degree of the polymer cross-linking, ability of the network polymers obtained to absorb various liquids, and pH and temperature sensitivity of the hydrogels based on cross-linked tetrazolylated cellulose was considered.
An approach to the forced blending of poly(5-vinyltetrazole) with carbon backbone epoxy polymers of various types through the formation of interpolymers has been considered. The covalent bonding of macromolecules of dissimilar polymers is the result of alkylation of unsubstituted N–H tetrazole fragments by oxirane cycles of the second participant of the reaction. Some properties of the resulting amphiphilic network interpolymers have been studied.
Radical polymerization of N-vinylcaprolactam with 5-vinyl- and 2-methyl-5-vinyltetrazole was used to synthesize water-compatible polymeric products whose aqueous solutions have phase diagrams with a lower critical solution temperature. The thermodynamics of the interaction of the copolymers with water and their behavior in aqueous systems were studied.
High-molecular-mass compounds (ionenes) containing charged imidazole and 1,2,4-triazole rings in the main chain are synthesized via the reaction of dihaloalkanes with bis(azoles) of various structures. It is shown that azole-containing ionenes can be involved in interpolymer reactions with negatively charged polyelectrolytes (polyacrylic acid and heparin) to form soluble and insoluble polyelectrolyte complexes of various compositions. The results confirm a potentially high antiheparin activity of azole-containing ionenes.
Polymer polyelectrolytes soluble in water in the ionized state are obtained by the free-radical copolymerization of 5-vinyltetrazole with N -vinylcaprolactam, N -vinylpiperidone, and N -vinylpyridone. The aqueous solutions of 5-vinyltetrazole- N -vinylcaprolactam copolymers are pH-thermosensitive and can be described by phase diagrams with a lower critical solution temperature.
Радикальной сополимеризацией 5-винилтетразола с N-винилкапролактамом, N-винилпиперидоном и N-винилпиридоном получены полимерные полиэлектролиты, растворимые в воде в ионизованном состоянии. Водные растворы сополимеров 5-винилтетразола и N-винилкапролактама характеризуются фазовыми диаграммами с нижней критической температурой растворения и являются рН-термочувствительными.
The thermodynamics of interaction with water and the behavior of 5-vinyltetrazole copolymers with comonomers of different chemical natures and hydrophilicities in aqueous media have been studied. It has been shown that the presence of side perfluoroalkyl and disubstituted tetrazole fragments, which ensure a strong self-association of polymer chains in copolymer macromolecules, favors a greater decrease in water affinity of polymers compared to the effect of hydrophobic alkyl substituents.
