2017 年 64 巻 3 号 p. 130-133
Titanium tetraisopropoxide and phenylphosphonic acid were mixed in tetrahydrofuran and subjected to hydrolysis to provide a white crystal of titanium phosphonate with a formula of [Ti4(μ3-O)(OiPr)5(μ-OiPr)3(PhPO3)3]·thf. The titanium phosphonate was mixed with poly(methyl methacrylate) (PMMA) to form a hybrid film. The content of the titanium phosphonate in the resulting mixture was less than 30 wt% and yellow. The degradation temperature increased about 30°C by the hybridization of a titanium phosphonate cluster with PMMA. On the other hand, titanium phosphonate was mixed with poly(vinyl alcohol) (PVA) to form a hybrid film. The content of titanium phosphonate in the mixture was less than 50 wt% and colorless. Isopropyl alcohol was formed in this reaction, which suggests the formation of hybrid by the reaction of PVA with an isopropoxy group in titanium phosphonate.
