Mishurov D. Processes of gelation in the concentrated solutions of poly(vinyl alcohol) in binary solvents

Subject of research. Physical and chemical aspects and regularity of processes of association of concentrated solutions of polymers in individual or mixed solvents. Research of properties of dissolvent and definition of its agency on processes of intermolecular association in polymer concentrated solutions. A objective of research. To position regularity of intermolecular interaction in poly(vinyl alcohol) concentrated solutions (PVA), agency of the chemical nature of interacting components on processes of formation donor-acceptor, and also hydrogen bonds for reception of concentrated solutions of polymer with stable physical and chemical and rheological behaviour. Research methods: volumemetry, viscosimetry, dielcometry; IR-spectroscopy, NMR-spectroscopy, Uf-spectroscopy; wide X-ray structure analysis, DSC, the scanning electronic microscopy, Research of the adhesive properties to various substrates made break off methods, definition of a contact angle of wetting, setting time. Theoretical and practical results. The processes of gelation proceeding in concentrated solutions PVA are investigated. Regularity of formation of intermolecular hydrogen bonds in these solutions is positioned; agency of an electronic donor-acceptor complex (DAC), formed in mixed solvent dimehtylsulfoxide (DMSO) - water is studied at a molar relationship (co)solvents 1:2 accordingly, on processes of formation donor-acceptor, and also hydrogen bonds for the purpose of reception of concentrated solutions of polymer with stable physical and chemical and rheological behaviour. The received results have allowed to create glues which have found practical application at labelling package.