Specific Features of the Mass Transfer of the Liquid Component in Poly(ethylene terephthalate) Crazing in Poly(ethylene oxide) Solutions

摘要

Crazing of polymers in liquid adsdrptive media is plastic deformation of a special type, which is accompanied by the development of nanoporosity in the polymer [1]. This property of crazing was repeatedly used for creating polymer-matrix nanocomposites of new types, including polymer—polymer nanocomposites |2|. In particular, it turned out that the crazing of a polymer (polymer 1) in solutions containing macro-molecules of another chemical nature (polymer 2) involves their efficient penetration in the nanoporous structure of developing crazes. Furthermore, the actually introduced amount of polymer 1 can significantly exceed its amount calculated under the assumption that the pores are filled with a solution of the concentration that is equal to the concentration of the surrounding solution, in which polymer 1 is being deformed |3]. This phenomenon was demonstrated by 100% stretching of polymer 1 (poly(ethylene terephthalate), or PET) in a solution of polymer 2 (poly(ethylene oxide), or PEO).