Relationship of thermoplastic starch crystallinity to plasticizer structure

Abstract The crystallinity of hydroxyalkylformamides‐platicized thermoplastic starch (HAFTPS) was characterized by X‐ray diffraction (XRD). The HAFTPS crystallinity related to the structure of plasticizer hydroxyalkylformamides (HAF). If there was one H atom attaching to N atom of HAF, the corresponding HAFTPS only had VA crystallinity; if there was no H atom attaching to N atom of HAF, the corresponding HAFTPS had EH crystallinity due to the bulky plasticizer.