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	2010/03
形態種別	学術雑誌
査読	査読あり
標題	Biodegradable polyuthethane elastomers prepared from isocyanate-terminated poly(ethylene adipate), castor oil, and glycerol
執筆形態	共著
掲載誌名	Journal of Applied Polymer Science
掲載区分	国外
出版社・発行元	John Wiley & Sons
巻・号・頁	115(6),pp.3199-3204
著者・共著者	Naozumi Teramoto, Yuichi Saitoh, Atsuo Takahashi, Mitsuhiro Shibata
概要	The curing reaction of tolylene-2,4-diisocyanate-terminated poly(ethylene adipate) (PEA-TDI) with a mixture of castor oil (CO) and glycerol (GO) at 150 degree C gave crosslinked polyurethane(CO/GO-PU). All the polyurethanes were elastomeric materials at r.t. The Tg of the CO/GO-PU increased with decreasing CO/GO ratio. All the cured polyurethanes had a higher 5% weight loss temperature than PEA-TDI. The tensile strength and modulus of the polyurethanes increased with decreasing CO/GO ratio, and tensile residual strain after 300% elongation for all the CO/GO-PUs was almost 0. All the polyurethanes had biodegradability, when measured by a biochemical oxygen demand method in an aqueous medium using activated sludge. The rate of the biodegradation of the polyurethanes increased with an increase of CO/GO ratio. The crosslinked CO-PU showed much higher biodegradability than the linear PEA-TDI.
DOI	10.1002/app.30019
ISSN	0021-8995