Question

How are polymer spherulites similar and different from metal grains?​

Answer 1

Polymer spherulites which are formed inside the polymer surface can be either crystalline in nature or can be semicrystalline in form. At any given time we may get many spherulites formation inside the polymer each with different sizes and structural features. The presence of spherulites in the polymer matrix enhances its polymeric properties to a great extent. These are formed by crystallization of polymer from the melt.

Metal grains are always crystalline in nature and are formed inside the metal surface. these are also formed by a slow process of crystallization from melt metal. These may change the properties in both directions, may enhance or may reduce some properties. Like spherulites, these metal grains also have different structures for each grain formed inside the solid metal surface with crystalline lattice.