Microbeam X-Ray Investigation of the Structural Transition from Circularly Banded to Ringless Dendritic Assemblies in Poly(Butylene Adipate) Through Dilution with Poly(Ethylene Oxide)

• Published in: Polymers Vol. 17; no. 15; p. 2040
• Main Authors: Nagarajan, Selvaraj, Chang, Chia-I, Lin, I-Chuan, Chen, Yu-Syuan, Su, Chean-Cheng, Lee, Li-Ting, Woo, Eamor M.
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 26.07.2025; MDPI
• Subjects: Assemblies; Crystal growth; Crystallization; Dendritic crystals; Dendritic structure; Dilution; Ethylene oxide; Investigations; Iridescence; Microbeams; Morphology; Plates; Polyethylene oxide; Polymers; Radiation; Scanning electron microscopy; Self-assembly; Single crystals; Solvents; Spherulites; Structural analysis; X-rays; United States > US; Japan; scanning electron microscopy; structural coloration; microbeam X-ray analysis; poly(butylene adipate); lamellar self-assembly; synchrotron radiation

In this study, growth mechanisms are proposed to understand how banded dendritic crystal aggregates in poly(1,4-butylene adipate) (PBA) transform into straight dendrites upon dilution with a large quantity of poly(ethylene oxide) (PEO) (25–90 wt.%). In growth packing, crystal plates are deformed in...