科研之友
微信
新浪微博
Facebook
分享链接
摘要
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.
- 出版日期2013-2
