Fluoroalkyl End-Capped Oligomer Possessing a Nonflammable Characteristic in Silica Gel Matrices Even at 800 C Under Atmospheric Conditions

摘要

We succeeded in observing the similar solid-state NMR spectra (1H-magic-angle spinning NMR spectra) of fluoroalkyl end-capped N-(1,1-dimethyl-3-oxobutyl) acrylamide oligomer [RF-(DOBAA)n-RF]/silica gel nanocomposite before and even after calcinations at 800 C. This finding suggests that RF-(DOBAA)n-RF oligomer in RF- (DOBAA)n-RF/silica gel nanocomposite can afford a nonflammable characteristic to exhibit no weight loss behavior even at 800 C under atmospheric conditions. In addition, we had good oleo- and hydrophobic characteristics on the modified glass surface treated with RF-(DOBAA)n-RF/silica gel nanocomposite even after calcination at 800 C as well as those before calcinations. Especially, RF-(DOBAA)n-RF/ silica gel nanocomposite-encapsulated cetylpyridinium chloride (CPC) possessing no weight loss characteristic even at 800 C exhibited a clear UV–vis absorption band around 260 nm related to the presence of CPC before and even after calcinations at 800 C.