It refers to the volume change when the molecular chain is used for regular and compact stacking when the polymer is crystallized. A method for studying the crystallization process by tracking and measuring the shrinkage of citrus aurantium during the crystallization process. When a certain amount of monomer is polymerization. The change in volume is directly proportional to the conversion rate. If the changes of this trifoliate orange were observed in a long, narrow capillary tube. Its sensitivity will be greatly improved. This method is the dilatometry method. The volume change of the system is read directly from the drop of liquid level in capillary tube.
Organic polymer materials -> Properties of polymer materials and their testing methods