@article{oai:kanagawa-u.repo.nii.ac.jp:00014052,
 author = {高橋, 広奈 and 平野, 弘樹 and 河合, 明雄},
 journal = {Science Journal of Kanagawa University},
 month = {Jun},
 note = {Radical reactions with maleic anhydride and methylhexahydrophthalic acid were investigated by observing short-lifetime reaction intermediate radicals to learn the graft polymerization process. Time-resolved (TR-) ESR spectroscopy was utilized to obtain hyperfine coupling constants (hfcc's) of the intermediate radicals. From analysis of the hfcc's with the aid of quantum chemical calculations, the structure of these intermediate radicals was determined. As for maleic anhydride, the reaction with the hydroxycyclohexyl radical was examined. The TR-ESR spectrum shows dual peaks, which were attributed to the isomers with different configurations probably at the moiety of the cyclohexane ring. Methylhexahydrophthalic acid was studied as a model compound for one of the important non-radical intermediates in the graft polymerization starting with maleic anhydride. Hydrogen abstraction by phenyl radicals was used to measure radical reaction products of methylhexahydrophthalic acid. Although the hyperfine lines of this intermediate radical were broad, the splitting of 33 G derived by two hydrogen atoms with a nearly equivalent hfcc was recognized, which enables us to determine the structure. From this information about intermediate radicals, we propose the initial process of graft polymerization of polypropylene with maleic anhydride., Departmental Bulletin Paper, 原著, 2020年度 神奈川大学総合理学研究所共同研究助成論文},
 pages = {35--40},
 title = {時間分解ESR法による無水マレイン酸と無水フタル酸誘導体に対するラジカル反応中間体の同定},
 volume = {32},
 year = {2021}
}