In polymer physics, spherulites (from Greek sphaira = ball and lithos = stone) are spherical semicrystalline regions inside non-branched linear polymers. Their formation is associated with crystallization of polymers from the melt and is controlled by several parameters such as the number of … See more If a molten linear polymer (such as polyethylene) is cooled down rapidly, then the orientation of its molecules, which are randomly aligned, curved and entangled remain frozen and the solid has disordered structure. However, … See more Mechanical Formation of spherulites affects many properties of the polymer material; in particular, crystallinity, density, tensile strength and Young's modulus of polymers increase during spherulization. This increase is due to … See more • Crystallization of polymers See more • G. W. Ehrenstein; Richard P. Theriault (2001). Polymeric materials: structure, properties, applications. Hanser Verlag. ISBN 1-56990-310-7. See more WebDec 1, 2015 · Polymer spherulites are spherically symmetric semicrystalline structures typically observed when a molten polymer is slowly cooled down [1]. The slow cooling allows polymer chains to form in ...
Deformation Mechanism of Polyethylene Spherulites as ... - Polymer Journal
WebOct 22, 2015 · I think the crystallinity of the polymers is an effective parameters on the mechanical properties of polymers. So, the effect of crystallinity should pursue in terms of its degree and the size and ... WebSep 7, 2024 · The percent crystallinity has an important influence on the properties of the polymer. Spherulites When a molten crystallizable polymer cools, the crystals grow from … godsmack virginia beach
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WebApr 29, 2015 · Polymer Journal - The melt memory of isotactic polystyrene spherulites from the melt is investigated using optical microscopy. When the melting–recrystallization processes are repeated by ... WebNov 4, 2024 · Spherulites are the most common crystalline morphology and thus the visual expression of crystal structures for polymers. The diversified patterns have provided intuitive morphology probes for various crystallization behaviors, while the correlations between them are still needed to be enriched. WebMar 21, 2024 · Unexpectedly, in the case of fiber pull induced cylindrites, a row of spherulites is nucleated at polymer-substrate interface, aligned along the fiber axis. All these intriguing morphologies are attributed to negative pressure buildup peaking at the growth front and at the nearby polymer surface caused by crystallization-induced volume … godsmack what about me lyrics