compatible polymer blend

Immiscible polymer blend that exhibits macroscopically uniform physical properties.
The macroscopically uniform properties are usually caused by sufficiently strong interactions between the component polymers.
PAC, 2007, 79, 1801 (Definitions of terms relating to the structure and processing of sols, gels, networks, and inorganic-organic hybrid materials (IUPAC Recommendations 2007)) on page 1817