Efficient preparation of novel fluoroalkyl end‐capped oligomers/titanium dioxide nanocomposites

Abstract

AbstractNovel fluoroalky end‐capped oligomers/titanium dioxide nanocomposites were prepared by the hydrolysis of titanium isopropoxide in the presence of fluoroalkyl end‐capped N‐(1,1‐dimethyl‐3‐oxobutyl)acrylamide oligomer [RF‐(DOBAA)n‐RF], fluoroalkyl end‐capped N,N‐dimethylacrylamide oligomer [RF‐(DMAA)n‐RF], and fluoroalkyl end‐capped acrylic acid oligomer [RF‐(ACA)n‐RF] in tetrahydrofuran under mild conditions. In these fluorinated oligomers, RF‐(ACA)n‐RF oligomer is more effective for the preparation of the corresponding oligomers/titanium dioxide nanocomposites, and this oligomer can afford the expected fluorinated titanium dioxide nanocomposites in higher isolated yields. In addition, RF‐(ACA)n‐RF/titanium dioxide composites are nanometer size‐controlled very fine nanoparticles (14–48 nm), and exhibited a good dispersibility not only in water but also in traditional organic solvents. Fluoroalkyl end‐capped oligomers/titanium dioxide nanocomposites were also applied to the surface modification of the common organic polymers such as poly(methyl methacrylate) to exhibit a good oleophobic and hydrophilic characteristics on the surface. POLYM. COMPOS., 2009. © 2008 Society of Plastics Engineers.