It considers polymers to consist of small-sized, ordered crystalline regions
-crystallites- imbedded in an unordered, amorphous polymer matrix.
Polymer chains are considered to pass through several
different crystalline regions with crystallites being formed
when extended-chain segments from different polymer
chains are precisely aligned together & under go crystallization.
Each polymer chain can contribute ordered segments to
several crystallites.
Fringed-micelle model
The segments of the chain in between
the crystallites make up the unordered
amorphous matrix.