Spherulites

Some articles on spherulites, spherulite:

Tachylite
... fluxion banding accentuated by the presence of rows of spherulites that are visible as dark brown rounded spots ... The spherulites have a distinct radiate structure and sometimes exhibit zones of varying color ... The spherulites may form the greater part of the mass, they may be a quarter of an inch in diameter and are occasionally much larger than this ...
Spherulite (polymer Physics) - Formation
... radially, in all directions resulting in spherical aggregates, that is spherulites ... Therefore, spherulites have semicrystalline structure where highly ordered lamellae plates are interrupted by amorphous regions ... The size of spherulites varies in a wide range, from micrometers up to 1 centimeter and is controlled by the nucleation ...
Geology Of Jersey - Brioverian Volcanics
... The Les Platons Rhyolite contains spherulites ... Spherulites are also found at Les Hurets on Bouley Bay ... These contain flow banding and spherulites up to 10 cm and eutaxitic and fiamme textures ...
Spherulite (polymer Physics) - Properties - Mechanical
... Formation of spherulites affects many properties of the polymer material in particular, crystallinity, density, tensile strength and Young's modulus ... This increase is due to the lamellae fraction within the spherulites, where the molecules are more densely packed than in the amorphous phase ... the amorphous regions between the lamellae within the spherulites give the material certain elasticity and impact resistance ...
Spherulite (polymer Physics) - Properties - Optical
... producing a variety of colored patterns when spherulites are viewed between crossed polarizers in an optical microscope ... molecular orientation is uniform when going along a line from the spherulite center to its edge along its radius ... The pattern may be different (bright or dark) for the center of the spherulites indicating misorientation of the molecules in the nucleation seeds of individual ...