Anatomy into Interior Lamellar Assembly in Nuclei-Dependent Diversified Morphologies of Poly(L-lactic acid)

Yu Ting Yeh, Eamor M. Woo

研究成果: Article同行評審

12 引文 斯高帕斯(Scopus)

摘要

Sophisticated dissection into the interiors of the three different birefringent types of poly(l-lactic acid) (PLLA) spherulites via delicate fracturing across the thickness sections, coupled with proper etching techniques, was adopted to reveal the correlations between the diversified birefringence patterns and interior lamellae assembly. The three types of spherulites are circularly ringed spherulite (type 1), hexagon-shaped axialite (type 2), and circularly core-stripe dendrites (type 3). Such morphological diversification originates from different nuclei geometries. For all three different types (circularly ringed, hexagonal, and core-stripe) of PLLA aggregation into spherulites or dendrites/axialites, the dissected inner lamellar arrangement shares universal commonality of intersecting at a 60° angle in the intersection between different lamellar species, with distinct discontinuity in the grating structures being characteristic of all three types of aggregated PLLA spherulites. This kind of grating assembly of the interior lamellae appears to be universally justified among many ring-banded polymer spherulites.

原文English
頁(從 - 到)7722-7733
頁數12
期刊Macromolecules
51
發行號19
DOIs
出版狀態Published - 2018 十月 9

All Science Journal Classification (ASJC) codes

  • 有機化學
  • 聚合物和塑料
  • 無機化學
  • 材料化學

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