We succeeded in observing the similar solid-state NMR spectra (H-1-magic-angle spinning NMR spectra) of fluoroalkyl end-capped N-(1,1-dimethyl-3-oxobutyl)acrylamide oligomer [R-F-(DOBAA)(n)-R-F]/silica gel nanocomposite before and even after calcinations at 800 degrees C. This finding suggests that R-F-(DOBAA)(n)-R-F oligomer in R-F-(DOBAA)(n)-R-F/Silica gel nanocomposite can afford a nonflammable characteristic to exhibit no weight loss behavior even at 800 degrees C under atmospheric conditions. In addition, we had good oleo- and hydrophobic characteristics on the modified glass surface treated with R-F-(DOBAA)(n)-R-F/silica gel nanocomposite even after calcination at 800 degrees C as well as those before calcinations. Especially, R-F-(DOBAA)(n)-R-F/silica gel nanocomposite-encapsulated cetylpyridinium chloride (CPC) possessing no weight loss characteristic even at 800 degrees C exhibited a clear UV-vis absorption band around 260 nm related to the presence of CPC before and even after calcinations at 800 degrees C. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 112: 3482-3487, 2009