Surface-relief and interior lamellar assembly in Janus-face spherulites of Poly(butylene succinate) crystallized with Poly(ethylene oxide)

Yahya Happy Mandala, Eamor M. Woo, Hikmatun Ni'mah, Siti Nurkhamidah

研究成果: Article同行評審

5 引文 斯高帕斯(Scopus)

摘要

Polarized-light optical, atomic-force, electron scanning microscopies and X-ray techniques were applied to reveal and analyze a highly anisotropic crystal aggregation into Janus-face spherulites in poly(butylene succinate) (PBSu) induced by crystallization in presence of molten poly(ethylene oxide) (PEO) at Tc = 70 °C. The dual-face (i.e., Janus-face) PBSu spherulites are distinguished with various fractions of two different lamellar assemblies filling the spherulites’ two portions. The Janus-face PBSu crystals (straight dendritic and circularly ring-banded lamellae) become significant only when the PEO content is kept at 20–30 wt% in the blended PBSu/PEO mixtures at Tc = 70 °C, with no top-cover confinement. That is, existence of Janus-faced spherulite is highly kinetics-selective for favorable nucleation to highly anisotropic growth into co-existence of two faces. Mechanisms of unique nucleation and interior lamellae assembly into the peculiar Janus-face PBSu spherulites are analyzed and discussed.

原文English
頁(從 - 到)168-178
頁數11
期刊polymer
176
DOIs
出版狀態Published - 2019 8月 2

All Science Journal Classification (ASJC) codes

  • 有機化學
  • 聚合物和塑料
  • 材料化學

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