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Probing the Nano-Assembly Leading to Periodic Gratings in Poly(p-dioxanone)

This study used scanning electron microscopy via 3D dissection coupled with synchrotron radiation with microfocal beams of both small-angle X-ray scattering and wide-angle X-ray diffraction to analyze the periodic crystal aggregates of unusual poly(p-dioxanone) (PPDO) dendritic cactus-arm-like ring...

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Detalles Bibliográficos
Autores principales: Hao, Min-Han, Nagarajan, Selvaraj, Woo, Eamor M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10574605/
https://www.ncbi.nlm.nih.gov/pubmed/37836306
http://dx.doi.org/10.3390/nano13192665
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author Hao, Min-Han
Nagarajan, Selvaraj
Woo, Eamor M.
author_facet Hao, Min-Han
Nagarajan, Selvaraj
Woo, Eamor M.
author_sort Hao, Min-Han
collection PubMed
description This study used scanning electron microscopy via 3D dissection coupled with synchrotron radiation with microfocal beams of both small-angle X-ray scattering and wide-angle X-ray diffraction to analyze the periodic crystal aggregates of unusual poly(p-dioxanone) (PPDO) dendritic cactus-arm-like ring bands upon crystallization with a diluent poly(vinyl alcohol) (PVA) that is capable of hydrogen bonding interactions with PPDO. Three-dimensional microscopy interior dissection clearly expounds that the banded periodic architectures are packed by alternately normal-oriented flat-on crystals underneath the valley, periodically interfaced/branched with horizontal-oriented edge-on fibrils underneath the ridge. The oblique angles between the valley’s flat-on crystals with the branches are ca. 25–45° (depending on gradient inclines and bending), which is also proved by the azimuthal angle in microbeam X-ray diffraction. The grating-like strut-rib assembly in the PPDO cactus-arm-like ring bands is further proved by novel iridescence tests.
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spelling pubmed-105746052023-10-14 Probing the Nano-Assembly Leading to Periodic Gratings in Poly(p-dioxanone) Hao, Min-Han Nagarajan, Selvaraj Woo, Eamor M. Nanomaterials (Basel) Article This study used scanning electron microscopy via 3D dissection coupled with synchrotron radiation with microfocal beams of both small-angle X-ray scattering and wide-angle X-ray diffraction to analyze the periodic crystal aggregates of unusual poly(p-dioxanone) (PPDO) dendritic cactus-arm-like ring bands upon crystallization with a diluent poly(vinyl alcohol) (PVA) that is capable of hydrogen bonding interactions with PPDO. Three-dimensional microscopy interior dissection clearly expounds that the banded periodic architectures are packed by alternately normal-oriented flat-on crystals underneath the valley, periodically interfaced/branched with horizontal-oriented edge-on fibrils underneath the ridge. The oblique angles between the valley’s flat-on crystals with the branches are ca. 25–45° (depending on gradient inclines and bending), which is also proved by the azimuthal angle in microbeam X-ray diffraction. The grating-like strut-rib assembly in the PPDO cactus-arm-like ring bands is further proved by novel iridescence tests. MDPI 2023-09-28 /pmc/articles/PMC10574605/ /pubmed/37836306 http://dx.doi.org/10.3390/nano13192665 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Hao, Min-Han
Nagarajan, Selvaraj
Woo, Eamor M.
Probing the Nano-Assembly Leading to Periodic Gratings in Poly(p-dioxanone)
title Probing the Nano-Assembly Leading to Periodic Gratings in Poly(p-dioxanone)
title_full Probing the Nano-Assembly Leading to Periodic Gratings in Poly(p-dioxanone)
title_fullStr Probing the Nano-Assembly Leading to Periodic Gratings in Poly(p-dioxanone)
title_full_unstemmed Probing the Nano-Assembly Leading to Periodic Gratings in Poly(p-dioxanone)
title_short Probing the Nano-Assembly Leading to Periodic Gratings in Poly(p-dioxanone)
title_sort probing the nano-assembly leading to periodic gratings in poly(p-dioxanone)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10574605/
https://www.ncbi.nlm.nih.gov/pubmed/37836306
http://dx.doi.org/10.3390/nano13192665
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