Subject shish-kebab morphology

The morphologies discussed so far have all been formed from isotropie melts. In practice melts are often subjected to shear forces and this ean induce alignment in the chains, which aids crystalhzation in particular directions. Orientation of the melt causes an increase in the free energy and this itself constitutes an important factor in practical processing. Shish-kebabs ° are formed from solutions that are subjected to elongational flow, which induces orientation of the solute molecules (Figure 5.12). 

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