TY - JOUR
T1 - Probing the interior lamellar periodicity and nano-assembly of polymer spherulites via combinatory etching methodology
AU - Lugito, Graecia
AU - Woo, Eamor M.
AU - Zunita, Megawati
AU - Wenten, I. Gede
N1 - Funding Information:
This work has been financially supported by a research subsidy for strengthening cooperation and exchange of academic fields with ASEAN and South Asian Countries in the field of engineering (H107-A039) from Taiwan's Ministry of Education (MOE) and a basic research grant (MOST-105-2221-E-006-246-MY3) for three consecutive years from Taiwan's Ministry of Science and Technology (MOST).
Funding Information:
This work has been financially supported by a research subsidy for strengthening cooperation and exchange of academic fields with ASEAN and South Asian Countries in the field of engineering ( H107-A039 ) from Taiwan’s Ministry of Education (MOE) and a basic research grant ( MOST - 105-2221-E-006-246-MY3 ) for three consecutive years from Taiwan’s Ministry of Science and Technology (MOST) .
Publisher Copyright:
© 2019
PY - 2019/8/2
Y1 - 2019/8/2
N2 - Physical and chemical degradative effects of etching agents on polymer spherulites have been explored thoroughly to understand the etching mechanism as well as to perceive the polymer crystal structure and assembly. Interior lamellae of an aromatic polyester, poly(trimethylene terephthalate) (PTT), crystallized into a well-defined periodic-birefringent spherulitic structure, are subjected to sequence-assorted etching agents of basic methylamine (MA) vapor, acidic permanganate (KMnO4) reagent, inorganic acids mixture (H2SO4:H3PO4), and organic dichloroacetic acid (DCA). The chemistry involved in reactions between the selected etchants with the polymer spherulites was probed and their synergistic effects on exposing the interior 3D assembly were assessed. The exposed circumferential alignment of rod-like polycrystals interconnected by nanofibrils signifies the hidden interfaces between the lamellae that are assembled in a periodic grating structure to form banded PTT spherulites.
AB - Physical and chemical degradative effects of etching agents on polymer spherulites have been explored thoroughly to understand the etching mechanism as well as to perceive the polymer crystal structure and assembly. Interior lamellae of an aromatic polyester, poly(trimethylene terephthalate) (PTT), crystallized into a well-defined periodic-birefringent spherulitic structure, are subjected to sequence-assorted etching agents of basic methylamine (MA) vapor, acidic permanganate (KMnO4) reagent, inorganic acids mixture (H2SO4:H3PO4), and organic dichloroacetic acid (DCA). The chemistry involved in reactions between the selected etchants with the polymer spherulites was probed and their synergistic effects on exposing the interior 3D assembly were assessed. The exposed circumferential alignment of rod-like polycrystals interconnected by nanofibrils signifies the hidden interfaces between the lamellae that are assembled in a periodic grating structure to form banded PTT spherulites.
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U2 - 10.1016/j.polymer.2019.05.047
DO - 10.1016/j.polymer.2019.05.047
M3 - Article
AN - SCOPUS:85066433800
SN - 0032-3861
VL - 176
SP - 179
EP - 187
JO - polymer
JF - polymer
ER -