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Probing the interior lamellar periodicity and nano-assembly of polymer spherulites via combinatory etching methodology
Lugito G.a,b, Woo E.M.a, Zunita M.b, Wenten I.G.b
a Department of Chemical Engineering, National Cheng Kung University, Tainan, 701-01, Taiwan
b Department of Chemical Engineering, Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung, 40132, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2019Physical 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.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Banded spherulite,Etching agents,Lamellar assemblies,Poly (trimethylene terephthalate),Polymer crystallization[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Banded spherulites,Etching agent,Lamellar assembly,Poly(trimethylene terephthalate),Polymer crystallization[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][{‘$’: ‘This work has been financially supported by a research subsidy for strengthening cooperation and exchange of academic fields with ASEAN and South Asian Countries in the field of engineering ( H107-A039 ) from Taiwan’s Ministry of Education (MOE) and a basic research grant ( MOST – 105-2221-E-006-246-MY3 ) for three consecutive years from Taiwan’s Ministry of Science and Technology (MOST) .’}, {‘$’: “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).”}][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/j.polymer.2019.05.047[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]