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Unique Periodic Rings Composed of Fractal-Growth Dendritic Branching in Poly(p-dioxanone)
Amorphous poly(p-vinyl phenol) (PVPh) was added into semicrystalline poly(p-dioxanone) (PPDO) to induce a uniquely novel dendritic/ringed morphology. Polarized-light optical, atomic-force and scanning electron microscopy (POM, AFM, and SEM) techniques were used to observe the crystal arrangement of...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8963038/ https://www.ncbi.nlm.nih.gov/pubmed/35215718 http://dx.doi.org/10.3390/polym14040805 |
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author | Huang, Kuan-Ying Woo, Eamor M. Nagarajan, Selvaraj |
author_facet | Huang, Kuan-Ying Woo, Eamor M. Nagarajan, Selvaraj |
author_sort | Huang, Kuan-Ying |
collection | PubMed |
description | Amorphous poly(p-vinyl phenol) (PVPh) was added into semicrystalline poly(p-dioxanone) (PPDO) to induce a uniquely novel dendritic/ringed morphology. Polarized-light optical, atomic-force and scanning electron microscopy (POM, AFM, and SEM) techniques were used to observe the crystal arrangement of a uniquely peculiar cactus-like dendritic PPDO spherulite, with periodic ring bands not continuingly circular such as those conventional types reported in the literature, but discrete and detached to self-assemble on each of the branches of the lobs. Correlations and responsible mechanisms for the formation of this peculiar banded-dendritic structure were analyzed. The periodic bands on the top surface and interior of each of the cactus-like lobs were discussed. The banded pattern was composed of feather-like lamellae in random fractals alternately varying their orientations from the radial direction to the tangential one. The tail ends of lamellae at the growth front spawned nucleation cites for new branches; in cycles, the feather-like lamellae self-divided into multiple branches following the Fibonacci sequence to fill the ever-expanding space with the increase of the radius. The branching fractals in the sequence and the periodic ring-banded assembly on each of the segregated lobs of cactus-like dendrites were the key characteristics leading to the formation of this unique dendritic/ringed PPDO spherulite. |
format | Online Article Text |
id | pubmed-8963038 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-89630382022-03-30 Unique Periodic Rings Composed of Fractal-Growth Dendritic Branching in Poly(p-dioxanone) Huang, Kuan-Ying Woo, Eamor M. Nagarajan, Selvaraj Polymers (Basel) Article Amorphous poly(p-vinyl phenol) (PVPh) was added into semicrystalline poly(p-dioxanone) (PPDO) to induce a uniquely novel dendritic/ringed morphology. Polarized-light optical, atomic-force and scanning electron microscopy (POM, AFM, and SEM) techniques were used to observe the crystal arrangement of a uniquely peculiar cactus-like dendritic PPDO spherulite, with periodic ring bands not continuingly circular such as those conventional types reported in the literature, but discrete and detached to self-assemble on each of the branches of the lobs. Correlations and responsible mechanisms for the formation of this peculiar banded-dendritic structure were analyzed. The periodic bands on the top surface and interior of each of the cactus-like lobs were discussed. The banded pattern was composed of feather-like lamellae in random fractals alternately varying their orientations from the radial direction to the tangential one. The tail ends of lamellae at the growth front spawned nucleation cites for new branches; in cycles, the feather-like lamellae self-divided into multiple branches following the Fibonacci sequence to fill the ever-expanding space with the increase of the radius. The branching fractals in the sequence and the periodic ring-banded assembly on each of the segregated lobs of cactus-like dendrites were the key characteristics leading to the formation of this unique dendritic/ringed PPDO spherulite. MDPI 2022-02-19 /pmc/articles/PMC8963038/ /pubmed/35215718 http://dx.doi.org/10.3390/polym14040805 Text en © 2022 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 Huang, Kuan-Ying Woo, Eamor M. Nagarajan, Selvaraj Unique Periodic Rings Composed of Fractal-Growth Dendritic Branching in Poly(p-dioxanone) |
title | Unique Periodic Rings Composed of Fractal-Growth Dendritic Branching in Poly(p-dioxanone) |
title_full | Unique Periodic Rings Composed of Fractal-Growth Dendritic Branching in Poly(p-dioxanone) |
title_fullStr | Unique Periodic Rings Composed of Fractal-Growth Dendritic Branching in Poly(p-dioxanone) |
title_full_unstemmed | Unique Periodic Rings Composed of Fractal-Growth Dendritic Branching in Poly(p-dioxanone) |
title_short | Unique Periodic Rings Composed of Fractal-Growth Dendritic Branching in Poly(p-dioxanone) |
title_sort | unique periodic rings composed of fractal-growth dendritic branching in poly(p-dioxanone) |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8963038/ https://www.ncbi.nlm.nih.gov/pubmed/35215718 http://dx.doi.org/10.3390/polym14040805 |
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