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Question
why and how an amorphous solid gets converted into crystalline solid with a high temperature?
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Solution
Why
Amorphous solids contain short range crystal particle arrangement which get more mobility at higher temperature to rearrange itself in such a way that long range crystal particle arrangement is observed. In such condition amorphous solid become crystalline.
Or we can say that if we heat amorphous solids then on heating the constituent particles which were before unarranged gets arranged on heating....so at particular temp. they pattern becomes perfectly regualr and becomes crystaline.
How
To convert an amorphous solid material into a crystalline material, melt or dissolve it in an appropriate solvent. Then, solidify the material from the melt through very slowly cooling down so that the molecules (or macromolecules in the case of polymers) of the material find sufficient time and opportunity to arrange an ordered crystalline microstructure.
Amorphous solids contain short range crystal particle arrangement which get more mobility at higher temperature to rearrange itself in such a way that long range crystal particle arrangement is observed. In such condition amorphous solid become crystalline.
Or we can say that if we heat amorphous solids then on heating the constituent particles which were before unarranged gets arranged on heating....so at particular temp. they pattern becomes perfectly regualr and becomes crystaline.
How
To convert an amorphous solid material into a crystalline material, melt or dissolve it in an appropriate solvent. Then, solidify the material from the melt through very slowly cooling down so that the molecules (or macromolecules in the case of polymers) of the material find sufficient time and opportunity to arrange an ordered crystalline microstructure.
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