Assertion: plastic | /r/HasProperty | amorphous
Facets:
value: partially
type: DEGREE
value: in molecular structure
type: OTHER
value: completely
type: DEGREE
Source sentences:
text: Many plastics are completely amorphous, such as: all thermosets; polystyrene and its copolymers; and polymethyl methacrylate.
text: They may be amorphous solids, crystalline solids, or semicrystalline solids (crystallites).
text: However, some plastics are partially crystalline and partially amorphous in molecular structure, giving them both a melting point, the temperature at which the attractive intermolecular forces are overcome, and also one or more glass transitions, the temperatures above which the extent of localized molecular flexibility is substantially increased.
text: Many plastics are completely amorphous, such as: all thermosets; polystyrene and its copolymers; and polymethyl methacrylate.
text: However, some plastics are partially crystalline and partially amorphous in molecular structure, giving them both a melting point, the temperature at which the attractive intermolecular forces are overcome, and also one or more glass transitions, the temperatures above which the extent of localized molecular flexibility is substantially increased.