The geometry of spherulite boundaries
Spherulitic growth and the microstructure of crystalline polymers is proved to correspond to space filling by the expansion of spheres. Therefore spherulitic microstructures are analogous to space filled in by randomly nucleating (in space), expanding and touching spheres. This is contrasted with microstructures in metals, where surface tension leads to reshaping of the grain boundaries. Geometrical solutions are given for the general cases of grain-boundary surface shapes depending on the...[Show more]
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