Polymerization of Vinyl Monomers on the High Disperse Aluminum-Containing Silica

• Autorzy: Levytska S. , Grebenyuk A. , Brei V.
• Języki publikacji: EN

Abstrakty

EN

The interaction of vinyl monomers (styrene, butyl vinyl ether, N-vinylpyrrolidinone, vinyltrimethylsilane, methyl acrylate, vinyl acetate, and vinylacetonitrile) vapours with aluminoaerosil surface has been studied by IR spectroscopy, thermal gravimetry, field ionization mass-spectrometry, and by quantum chemical simulations. The Bronsted acidic sites of the oxide (Í0 _ -3.0) were found to be capable to initiate an oligomerization of butyl-vinyl ether, styrene and N-vinylpyrrolidinone, whereas the monomers containing electron acceptor substituents (methyl acrylate, vinyl acetate, and vinylacetonitrile) are sorbed only in a physical way. The method of vapour phase oligomerization at temperatures 30-120_C has been shown to be a suitable way to produce disperse composite materials with a great content of organic matter (40-60 wt. %). Experimental and calculated absorption spectra support the idea on the formation of both monomeric and oligomeric protonated species due to adsorption of vinyl monomers on the surface of aluminum-containing silica unlike on that of pure silica.

Słowa kluczowe

EN

polymerization; vinyl monomer; silica; composite materials; quantum chemistry

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2003
• Tom: Vol. 77 / nr 5
• Strony: 547--556
• Opis fizyczny: Bibliogr. 18 poz., rys.

Twórcy

autor

Levytska S.

• Institute of Surface Chemistry of the National Academy of Sciences, Generala Naumova str., 17, 03164 Kyiv, Ukraine

autor

Grebenyuk A.

• Institute of Surface Chemistry of the National Academy of Sciences, Generala Naumova str., 17, 03164 Kyiv, Ukraine

autor

Brei V.

• Institute of Surface Chemistry of the National Academy of Sciences, Generala Naumova str., 17, 03164 Kyiv, Ukraine

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