引用本文:
欧宝立. SiO2大分子单体的合成[J]. 应用化学,
2006, 23(7): 803-807.
Citation: OU Bao-Li. Preparation of Silica Macromonomer[J]. Chinese Journal of Applied Chemistry, 2006, 23(7): 803-807.
Citation: OU Bao-Li. Preparation of Silica Macromonomer[J]. Chinese Journal of Applied Chemistry, 2006, 23(7): 803-807.
SiO2大分子单体的合成
English
Preparation of Silica Macromonomer
Abstract:
A two-stage process was developed to synthesize the silica-based macromonomer through the surface-modification of silica with polymerizable vinyl groups. The silica surface was first treated with excess toluene-2,4-diisocynate(TDI),after which the residual isocyanate groups were converted into polymerizable vinyl groups by reaction of the above mixture with hydroxypropylacrylate(HPA).The main effecting factors on the reaction of silica with TDI were studied by determining the reaction extent of hydroxyl groups at the surface of silica particles.FTIR spectroscopy and TG were employed to characterize the macromonomer.TEM images showed that the silica particles remained unaggregated after surface modification.
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Key words:
- silica
- / toluene-diisocynate
- / surface modification
- / silica macromonomer
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