Fluoroalkyl end‐capped oligomer possessing a nonflammable characteristic in silica gel matrices even at 800°C under atmospheric conditions

Abstract

Abstract We succeeded in observing the similar solid‐state NMR spectra ( 1 H‐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°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°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°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°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. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009