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Mechanistic study on radiation‐induced grafting into fluorinated polymer solid films using a swelling‐induced detachment of grafted polymers
https://repo.qst.go.jp/records/82008
https://repo.qst.go.jp/records/82008a840761f-ee73-44de-959d-6158dc09e00a
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-02-26 | |||||
| タイトル | ||||||
| タイトル | Mechanistic study on radiation‐induced grafting into fluorinated polymer solid films using a swelling‐induced detachment of grafted polymers | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Beom‐Seok, Ko
× Beom‐Seok, Ko× Kimio, Yoshimura× Hiroki, Akihiro× Yasunari, Maekawa× Kimio, Yoshimura× Akihiro, Hiroki× Yasunari, Maekawa |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The radiation‐induced graft polymerization (RGP) of styrene into poly(ethylene‐co‐tetrafluoroethylene) films was performed at various monomer concentrations and solvents at 60 °C. The grafted polystyrene (g‐PS) was isolated using the swelling‐induced detachment phenomenon, and the number‐averaged molecular weight (Mn) and the number of g‐PS (Np) were determined using gel permeation chromatography. The Mn increased consistently with an increase in the grafting time up to 2–3 hours, indicating very low termination rates, which was a result of the “gel effect”. This is the first direct evidence of the gradual Mn increase over time using RGP in thermally and chemically stable polymer films such as fluorinated polymers. When the Mn and Np were plotted as a function of the degree of grafting (DOG), sudden Np drops along with rapid Mn increases were observed in the DOG region of 80–90%, indicating negligible initiation and propagation; however, a recombination termination between two propagating g‐PS radicals dominated the later part of the grafting process. Further increases in both Mn and Np were observed subsequently, implying that reinitiation and propagation events were triggered by morphological changes, as observed by small‐ and ultrasmall‐angle X‐ray scattering experiments, which liberated the dormant radicals from the lamellar crystals. | |||||
| 書誌情報 |
Journal of Polymer Science 巻 59, 号 1, p. 108-116, 発行日 2021-01 |
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| 出版者 | ||||||
| 出版者 | Wiley | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2642-4169 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1002/pol.20200727 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://onlinelibrary.wiley.com/doi/abs/10.1002/pol.20200727 | |||||
