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Citation: OU Bao-Li. Preparation of Silica Macromonomer[J]. Chinese Journal of Applied Chemistry, ;2006, 23(7): 803-807. shu

Preparation of Silica Macromonomer

OU Bao-Li ^,

1.
College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201

Corresponding author: OU Bao-Li,
Received Date: 21 July 2005
Available Online: 30 October 2005

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.
- silica,
- toluene-diisocynate,
- surface modification,
- silica macromonomer
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