Synchrotron X-Ray Analysis and Morphology Evidence for Stereo-Assemblies of Periodic Aggregates in Poly(3-hydroxybutyrate) with Unusual Photonic Iridescence

Yu Hsuan Liao, Selvaraj Nagarajan, Eamor M. Woo, Wei Tsung Chuang, Yi Wei Tsai

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

3D morphology of poly(3-hydroxybutyrate) (PHB), crystallized in the presence of diluents of poly(1,3-trimethylene adipate) and poly(ethylene oxide), is probed using a novel approach coupled with selective etching. For interpreting the mechanisms of crystal periodic aggregation, various microscopic techniques and synchrotron microbeam X-ray analysis are used to observe the top surface in connection with the 3D crystal assemblies. Periodic grating architectures, with the cross-bar pitch exactly matching with the optical band spacing, are proved in banded PHB. The crystals under the ridge branch out to spawn finer crystals orienting/bending horizontally underneath the valley band, repeating till species drainage or impingement. The grating structure in the banded PHB resembles many nature's iridescence crystals and is further proved by photonic reflection results as a critical breakthrough novel finding.

原文English
文章編號2100281
期刊Macromolecular Rapid Communications
42
發行號14
DOIs
出版狀態Published - 2021 七月

All Science Journal Classification (ASJC) codes

  • 聚合物和塑料
  • 有機化學
  • 材料化學

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