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...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/4/805 |
| _version_ | 1797476990082613248 |
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| author | Kuan-Ying Huang Eamor M. Woo Selvaraj Nagarajan |
| author_facet | Kuan-Ying Huang Eamor M. Woo Selvaraj Nagarajan |
| author_sort | Kuan-Ying Huang |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-09T21:11:37Z |
| format | Article |
| id | doaj.art-fa74b5ca09524c5d9a6c4a6a921366b2 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T21:11:37Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-fa74b5ca09524c5d9a6c4a6a921366b22023-11-23T21:46:11ZengMDPI AGPolymers2073-43602022-02-0114480510.3390/polym14040805Unique Periodic Rings Composed of Fractal-Growth Dendritic Branching in Poly(p-dioxanone)Kuan-Ying Huang0Eamor M. Woo1Selvaraj Nagarajan2Department of Chemical Engineering, National Cheng Kung University No. 1, University Road, Tainan 701-01, TaiwanDepartment of Chemical Engineering, National Cheng Kung University No. 1, University Road, Tainan 701-01, TaiwanDepartment of Chemical Engineering, National Cheng Kung University No. 1, University Road, Tainan 701-01, TaiwanAmorphous 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.https://www.mdpi.com/2073-4360/14/4/805poly(p-dioxanone)poly(p-vinyl phenol)fractalbanded dendritesself-assembly |
| spellingShingle | Kuan-Ying Huang Eamor M. Woo Selvaraj Nagarajan Unique Periodic Rings Composed of Fractal-Growth Dendritic Branching in Poly(p-dioxanone) Polymers poly(p-dioxanone) poly(p-vinyl phenol) fractal banded dendrites self-assembly |
| 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 | poly(p-dioxanone) poly(p-vinyl phenol) fractal banded dendrites self-assembly |
| url | https://www.mdpi.com/2073-4360/14/4/805 |
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