{"id":1664,"date":"2024-02-06T16:50:16","date_gmt":"2024-02-06T07:50:16","guid":{"rendered":"https:\/\/c-mng.cwh.hokudai.ac.jp\/aml.eng\/Root\/?p=1664"},"modified":"2024-02-06T16:50:16","modified_gmt":"2024-02-06T07:50:16","slug":"the-paper-by-prof-kitagaki-and-assoc-prof-elakneswaran-has-accepted-by-progress-in-organic-coatings","status":"publish","type":"post","link":"https:\/\/c-mng.cwh.hokudai.ac.jp\/aml.eng\/Root\/researches\/the-paper-by-prof-kitagaki-and-assoc-prof-elakneswaran-has-accepted-by-progress-in-organic-coatings.html","title":{"rendered":"The paper by Prof. Kitagaki and Assoc.prof. Elakneswaran has accepted by PROGRESS IN ORGANIC COATINGS."},"content":{"rendered":"
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The paper discusses the multi-stage analysis of thermal aging in acrylic urethane networks (AUN) and aims to establish a kinetic model for predicting the oxidation of AUN. It considers the pure thermal effects of oxidation at 160\u00b0C, 180\u00b0C, and 200\u00b0C, monitoring chemical changes using infrared spectroscopy. The study reveals that oxidation primarily induces cross-linking, leading to a decrease in rigidity (i.e., embrittlement). A new kinetic model, based on mechanisms previously established for polyamide 11, incorporates the formation of alkyl radicals through thermal decomposition, the scission of oxidized N-H bonds, and the addition of aminyl radicals.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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