two-phase model

https://doi.org/10.1351/goldbook.14205
Model based on the assumption that the polymer sample consists only of domains of a crystalline phase and of an amorphous phase.
Source:
PAC, 2011, 83, 1831. (Definitions of terms relating to crystalline polymers (IUPAC Recommendations 2011)) on page 1835 [Terms] [Paper]