Взаємодія вінілових мономерів з поверхнею анатазу і високодисперсного титанвмісного кремнезему
The interaction of some vinyl monomers (styrene, n-butyl vinyl ether, N-vinylpyrrolidinone, methacrylate and vinyl acetate) with surfaces of thermoactivated anatase and titanium-containing silica has been studied by means of IR-spectroscopy and derivatography. The Lewis acid sites of titanium dioxid...
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| Дата: | 2004 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | Українська |
| Опубліковано: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2004
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| Онлайн доступ: | https://surfacezbir.com.ua/index.php/surface/article/view/134 |
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| Назва журналу: | Surface |
| Завантажити файл: |  |
Репозитарії
Surface| Резюме: | The interaction of some vinyl monomers (styrene, n-butyl vinyl ether, N-vinylpyrrolidinone, methacrylate and vinyl acetate) with surfaces of thermoactivated anatase and titanium-containing silica has been studied by means of IR-spectroscopy and derivatography. The Lewis acid sites of titanium dioxide surface have been found to be capable to initiate an oligomerisation of adsorbed molecules of styrene, n-butyl vinyl ether, and N-vinylpyrrolidinone. Basing on the results of quantum chemical calculations, a coordination mechanism has been proposed of the oligomerisation of vinyl monomers with participation of coordinatedly unsaturated titanium ions at the surfaces of oxides examined. A possibility has been shown to produce composite materials with a content of organic matter of 25-55 wt. % by the method of adsorption oligomerisation at the temperature of 30 to 120°C. |
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