Solid-State NMR Analysis of Irradiated Fluoropolymers
作者单位：Department of Biochemistry National Institute of Agrobiological Science （NIAS） 2-1-2 Kannondai Tsukuba Ibaraki 305-8602Japan Advanced Research Institute for Science and Engineering Waseda University 3-4-1 Okubo Shinjuku-ku Tokyo 169-8555Japan Department of Organic and polymeric Materials Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo152-8552 Japan Department of Organic and polymeric Materials Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo152-8552 Japan Department of Biochemistry National Institute of Agrobiological Science （NIAS） 2-1-2 Kannondai Tsukuba Ibaraki 305-8602 Japan Bruker BioSpin Company Ltd. Ninomiya 3-21-5 Tsukuba Ibaraki 305-0051 Japan Advanced Research Institute for Science and Engineering Waseda University 3-4-1 Okubo Shinjuku-ku Tokyo 169-8555Japan Department of Biochemistry National Institute of Agrobiological Science （NIAS） 2-1-2 Kannondai Tsukuba Ibaraki 305-8602Japan
会议名称：《RadTech Asia 2005》
会议日期：2005年
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学]
摘 要：正 We have investigated changes in chemical structures and molecular dynamics for electron beam（EB）-irradiated MPE/PTFE polymer-blend using solid-state NMR spectroscopy. Although 13the 13C MAS NMR spectra did not yield useful information regarding changes in the chemical structure of MPE/PTFE by the EB- irradiation, it was possible to obtain detailed structural information from the 19F MAS NMR spectra. The results indicate that 19F signals at -215 （-CFH- and/or -CFH2） and -140 ppm （-CF2H） for EB-irradiated MPE/PTFE are characteristic signals, which are not observed in independently irradiated PTFE. Furthermore, relaxation times for these samples were measured, and the results indicate that the molecular motion of the crystalline components of PTFE and MPE is altered by EB-irradiation. These NMR experimental results indicate that a chemical reaction occurred between MPE and PTFE, and that their molecular motion was significantly changed by irradiation.