Polymer Classifications ·Crystalline:结晶的 - Periodic 3-D,repeating array of molecules 。Amorphous:无定型的 -Literally“without structure” No repeating array 。·Semi-crystalline:半结晶的 Structure containing regions of both crystalline and amorphous molecular arrangementsPolymer Classifications Thermoplastics 结晶的 无定型的 Thermosets 半结晶的