Preparation of a variety of fluoroalkyl end-capped N-(1,1-dimethyl-3-oxobutyl)acrylamide oligomer/silica nanocomposites possessing no weight loss characteristic at 800 degrees C

作者：Sawada Hideo^*; Tashima Tsukasa; Kodama Shun

来源：Polymers for Advanced Technologies, 2008, 19(7): 739-747.

DOI：10.1002/pat.1050

• silica nanocomposite
• fluorinated oligomer
• oligomer/silica nanocomposite
• no weight loss
• calcination
• FT-IR
• TGA
• DLS
• DTA

A variety of fluoroalkyl end-capped N-(1,1-dimethyl-3-oxobutyl)acrylamide oligomer [R-F-(DOBAA)(n)-RFI/silica nanocomposites, in which the oligomer contents are 18-96%, were prepared by reactions of the corresponding fluorinated oligomer with tetraethoxysilane and silica nanoparticles under alkaline conditions. Each fluorinated oligomer/silica composite thus obtained is nanometer size-controlled very fine particles (22-68 nm) possessing a good dispersibility and stability in a variety of solvents including water. Interestingly, the weight loss of R-F-(DOBAA)(n)-R-F/Silica nanocomposites, in which the oligomer contents are 18-72%, were not observed at all even at 800 degrees C, as well as the original silica nanoparticles, although the corresponding sub-micrometer size-controlled R-F-(DOBAA)(n)-R-F/silica composites (particle size: 359nm) decomposed completely at 800 degrees C to afford the weight loss in proportion to the content of R-F-(DOBAA)(n)-R-F oligomer in composites. On the other hand, a slight weight loss of R-F-(DOBAA)(n)-R-F/silica nanocomposites, in which the oligomer contents are 75-94%, was observed at 800 degrees C compared to that of the original silica nanoparticles.

• 出版日期2008-7