| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-07-08 |
| タイトル |
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|
タイトル |
Preparation of Polystyrene Nanoparticles with Environmental Relevance Using a Gradual Degradation Method |
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言語 |
en |
| 言語 |
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|
言語 |
eng |
| キーワード |
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|
言語 |
en |
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主題Scheme |
Other |
|
主題 |
microplastics |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
|
主題 |
mechanism |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
sea |
| キーワード |
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|
言語 |
en |
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主題Scheme |
Other |
|
主題 |
polystyrene |
| キーワード |
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|
言語 |
en |
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主題Scheme |
Other |
|
主題 |
degradation method |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
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主題 |
environmental relevance |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Nakatani, Hisayuki
Asano, Mika
Sakamoto, Masaki
Motokucho, Suguru
Dao, Anh Thi Ngoc
Kim, Hee-Jin
Yagi, Mitsuharu
Kyozuka, Yusaku
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
This study investigates the environmental degradation of polystyrene (PS) microparticles and flakes using a gradual degradation method. The concentration of SO4•− decreased exponentially, simulating the environmental conditions. The nanofragment size of PS particles evolved dynamically, fluctuating from below 250 nm at 3 days to 300–500 nm at 6 days, then forming two peaks below 200 nm at 9 days, before shifting to a single peak below 100 nm at 12 days. At 15 days, the distribution expanded to two peaks between 500 nm and 200 nm. The polydispersity index (PDI) varied unpredictably, and fragments below 100 nm fluctuated between 10 and 50 nm independent of time. SEM analysis revealed an initial peeling process, with the outermost layer peeling off. The core size of the PS particles decreased rapidly from 11,000 nm to 2500 nm within 6 days and stabilized at 1000 nm after 9 days. The PS flakes showed minimal shape change until 24 days, but surface roughness increased by 30 days, leading to fragmentation. By 42 days, the flakes partially broke into ca. 100 μm pieces. The initial morphology significantly influenced the breakdown pattern, suggesting multiple breakdown mechanisms other than peeling. |
|
言語 |
en |
| 書誌情報 |
en : Polymers
巻 17,
号 12,
p. art. no. 1715,
発行日 2025-06-19
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| 出版者 |
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出版者 |
MDPI |
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言語 |
en |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
2073-4360 |
| DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
10.3390/polym17121715 |
| 権利 |
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|
権利情報 |
© 2025 by the authors. 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/). |
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言語 |
en |
| 著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 引用 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Polymers, 17(12), art. no. 1715; 2025 |
|
言語 |
en |
P17_1715.pdf (4.4 MB)
