Phase state of the polysulfone-poly(ethylene glycol)-dimethylacetamide system

Autor:	A. V. Bil’dyukevich, L. A. Fen’ko
Rok vydání:	2013
Předmět:	Materials science Polymers and Plastics Intrinsic viscosity Viscometer Lower critical solution temperature Dimethylacetamide chemistry.chemical_compound Viscosity chemistry Chemical engineering Upper critical solution temperature Polymer chemistry Materials Chemistry Polysulfone Ethylene glycol
Zdroj:	Polymer Science Series A. 55:75-81
ISSN:	1555-6107 0965-545X
DOI:	10.1134/s0965545x1302003x
Popis:	Via the method of turbidity points, a fragment of the phase diagram of the polysulfone-poly(ethylene glycol) 400-dimethylacetamide three-component system was constructed. This system is a unique object with both an upper critical solution temperature and a second-order lower critical solution temperature. Viscosity characteristics and activation parameters of the viscous flow of concentrated and dilute polysulfone solutions in dimethylacetamide containing poly(ethylene glycol) were studied. An abnormal increase in the solution viscosity with temperature that precedes the phase transition was found. With the use of IR spectroscopy and the viscometry of dilute solutions, it was shown that it is possible to form additive compounds between the components in a solution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a92c5ecca1bdb7af67c6888d18ce846f https://doi.org/10.1134/s0965545x1302003x Zobrazit plný text záznamu Full text from SpringerLink