環状ジスルフィドの重合によるポリカテナンの合成と形状記憶特性
2007 年 80 巻 5 号 p. 191-196
詳細
2007 年 80 巻 5 号 p. 191-196
This review describes thermal polymerization of cyclic disulfides without any initiators. Cyclic disulfides such as 1, 2-dithiane (DT) and 1, 4-dihydro-2, 3-benzodithine (XDS) can polymerize easily at reaction temperature of the melting points of the respective monomers to give a high molecular weight polymer determined by GPC. From the analyses of NMR and ESI-MS spectroscopies, the polymers obtained from the polymerization of cyclic disulfides were found to be a cyclic structure. Moreover, thermal and mechanical properties of the polymers, and decomposition behaviors of the polymers demonstrate that the polymers obtained from thermal polymerization of cyclic disulfides include a polycatenane structure. From polymerization of cyclic disulfides in the presence of cyclic poly (ethylene oxide), a polycatenane consisting of two different cyclic polymer was obtained. The polymers revealed characteristics as a shape-memory material.
