Chain-Level Structure of Semi-crystalline Polymer in Thermodynamically Stable Crystal and Quenched Glass

Crystallization of long polymer chains changes random coil state to folded structure in thin crystal lamellae. In this work, we will study chain-level structure of ¹³C CH₃ labeled Poly (Lactic Acid) with diverse molecular weights in thermodynamically stable a crystal and quenched glass by using Solid-state NMR spectroscopy. Molecular weight effect on folding event and crystallization will be discussed.