TY - JOUR
T1 - Surface-relief and interior lamellar assembly in Janus-face spherulites of Poly(butylene succinate) crystallized with Poly(ethylene oxide)
AU - Mandala, Yahya Happy
AU - Woo, Eamor M.
AU - Ni'mah, Hikmatun
AU - Nurkhamidah, Siti
N1 - Funding Information:
This work has been financially supported by basic research grants ( MOST-105-2221-E006-246-MY3 ) in three consecutive years from Taiwan’s Ministry of Science and Technology (MOST) , to which the authors express their gratitude.
Funding Information:
This work has been financially supported by basic research grants (MOST-105-2221-E006-246-MY3) in three consecutive years from Taiwan's Ministry of Science and Technology (MOST), to which the authors express their gratitude.
PY - 2019/8/2
Y1 - 2019/8/2
N2 - 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.
AB - 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.
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U2 - 10.1016/j.polymer.2019.05.048
DO - 10.1016/j.polymer.2019.05.048
M3 - Article
AN - SCOPUS:85066446096
SN - 0032-3861
VL - 176
SP - 168
EP - 178
JO - polymer
JF - polymer
ER -