Periodic Assembly of Polyethylene Spherulites Re-Investigated by Breakthrough Interior Dissection

Selvaraj Nagarajan, Eamor M. Woo

研究成果: Article同行評審

13 引文 斯高帕斯(Scopus)


A completely novel 3D dissection approach is taken to re-investigate high-density polyethylene (HDPE) crystallized into periodic architectures in a wide range of Tc. This work first discovers that ring bands present in HDPE are crystallized in a quite wide Tc range (90–120 °C) all within regime-III growth. With further detailed analyses of the top-surface-relief patterns and 3D architectures of HDPE spherulites, this work has fully clarified the periodic morphology packed with alternate ways of single-crystal aggregates in correlation with the optical banding patterns. The proposed assembly mechanism sheds light that the periodic bands are actually composed of a cross-hatch grating structure in that the alternately perpendicular orientations from the ridge to valley bands being related to the interior radial to tangential lamellae. Such grating architectures in the interiors of HDPE can be viewed as a mimicry resembling shish-kebab lamellae self-aligned by Archimedean spiral-spins from the nucleus center.

期刊Macromolecular Rapid Communications
出版狀態Published - 2021 5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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