シバタ　ミツヒロ   SHIBATA MITSUHIRO   柴田　充弘    所属   千葉工業大学  工学部 応用化学科    千葉工業大学  工学研究科 工学専攻    千葉工業大学  工学研究科 応用化学専攻    職種   教授
言語種別	英語
発行・発表の年月	2013/06
形態種別	学術雑誌
査読	査読あり
標題	Organogelation behavior, thermal and mechanical properties of polymer network formed by the Diels-Alder reaction of furan- and maleimide-terminated four-arm star-shaped epsilon-caprolactone oligomers
執筆形態	共著
掲載誌名	Polymer
掲載区分	国外
出版社・発行元	Elsevier
巻・号・頁	54(13),pp.3206-3216
著者・共著者	Toshiaki Ikeda, Daisuke Oikawa, Toshiaki Shimasaki, Naozumi Teramoto, Mitsuhiro Shibata
概要	Furan- and maleimide-terminated 4-arm star-shaped e-caprolactone oligomers (F4CLO and M4CLO) were synthesized by the reactions of hydroxy-terminated 4-arm star-shaped caprolactone oligomers (H4CLO) having the degree of polymerization per one oligocaprolactone chain, n = 5 or 10 with furfuryl isocyanate and 4-(maleimidophenyl)isocyanate, respectively. Solutions of F4CLO/M4CLO or F4CLO/4,4-bismaleimidodiphenylmethane (BMI) in some organic solvents changed to gels by the Diels-Alder (DA) reaction at 50 degree C or room temperature, which came back to solutions by the retro-DA (rDA) reaction at 80 degree C. The thermo-reversible sol-gel process due to the DA and rDA reactions was monitored by 1H-NMR and GPC analyses. DSC and XRD analyses of polymer network formed by the DA reaction revealed that the network composed of the oligocaprolactone chain of n = 10 is semicrystalline, while that of n = 5 are amorphous.
DOI	10.1016/j.polymer.2013.04.052
ISSN	0032-3861