ホリ ヒサオ   Hori Hisao
  堀 久男
   所属   神奈川大学  理学部 化学科
   職種   教授
発表年月日 2015/07/08
発表テーマ Efficient-Oxygen Induced Decomposition of Melt-Processable Fluoropolymers in Subcritical and Supercritical Water
発表学会名 7th International Conference on Green and Sustaineble Chemistry (GSC-7)
主催者 Organizing Committee, 7th International Conference on Green and Sustainable Chemistry (GSC-7)
学会区分 国際学会
発表形式 口頭(一般)
単独共同区分 共同
開催地名 Tokyo, Gakushi-Kaikan
発表者・共同発表者 Hisao Hori1, Takehiko Sakamoto1, Kenta Ohmura1, Haruka Yoshikawa1, Tomohisa Seita1, Tomoyuki Fujita2, Yoshitomi Morizawa2
1: Kanagawa University; 2: Asahi Glass Co. Ltd.
概要 Decomposition of poly(vinylidene fluoride)(PVDF) and ethylene-tetrafluoroethylene copolymer(ETFE)in subcritical and supercritical water was investigated.Heating PVDF in supercritical water at 380 degrees for 6 h with an approximately 5.8-fold molar excess of O2 relative to the fluorine or carbon content in the polymer afforded F- and CO2 in 96.9% and 99.3% yields, respectively.ETFE was also efficiently decomposed to F-(97.6%) and CO2 (98.2%) with an 11-fold molar excess of O2 relative to the fluorine or carbon content of the polymer under the same reaction conditions. The PVDF and ETFE reactivities differed markedly under argon, suggesting that PVDF decomposed via dehydrofluorination in the absence of O2, whereas ETFE did not.