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Thermal aging of acrylic-urethane network: Kinetic modeling and end-of-life criteria combined with mechanical properties
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| Title: | Thermal aging of acrylic-urethane network: Kinetic modeling and end-of-life criteria combined with mechanical properties |
| Authors: | Ishida, Takato Browse this author | | Richaud, Emmanuel Browse this author | | Gervais, Matthieu Browse this author | | Gaudy, Alain Browse this author | | Kitagaki, Ryoma Browse this author →KAKEN DB | | Hagihara, Hideaki Browse this author | | Elakneswaran, Yogarajah Browse this author |
| Keywords: | Kinetics | | Oxidation | | Macromolecular architecture | | Acrylic-urethane network |
| Issue Date: | Feb-2022 |
| Publisher: | Elsevier |
| Journal Title: | Progress in Organic Coatings |
| Volume: | 163 |
| Start Page: | 106654 |
| Publisher DOI: | 10.1016/j.porgcoat.2021.106654 |
| Abstract: | This study addresses the multiscale analysis of acrylic urethane networks (AUN). To establish the kinetic model for predicting AUN oxidation, this study considered the pure thermal oxidation of AUN at 160, 180, and 200 degrees C. Chemical changes were monitored using infrared spectroscopy. These indicated the presence of an imide, presumably generated from the oxidation of CH2 at the alpha-position of nitrogen. On the macromolecular and macroscopic scales, oxidation was shown to induce predominant crosslinking, leading to a drop in toughness (i. e., embrittlement). The novel kinetic model of AUN thermal aging was developed from a mechanistic scheme previously established for polyamide 11, by adding some extra paths of thermolytic alkyl radical formation, oxidative N-H bonds decomposition and coupling of aminyl radicals. |
| Rights: | © <2022>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ | | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/90927 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 石田 崇人
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