Crystalline state fringe micelle model

Flgure 2.1 Conformational differences of polymer chains in the amorphous and crystalline states. Fringed micelle model. Parallel and coiled lines represent, respectively, portions of chains in the crystalline and the amorphous regions. 

At low degrees of crystallinity in the bulk state, a fringed micelle type of model (admitting the possibility of chain folding) may be appropriate, whereas at higher degrees of crystallinity, a paracrystalline type of model such as is depicted in Figure 1.7 may better reflect reality. 

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