Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1887182 | Radiation Physics and Chemistry | 2008 | 6 Pages |
Abstract
Precipitated amorphous silica has been γ radiolyzed at 333, 666 and 1000 kGy in air. The structural changes undergone during irradiation have been studied by 29Si CP-MAS NMR spectroscopy. The spectra suggest that silica looses the hydrogen atoms attached to the silanol groups and the resulting silanol radicals undergo a crosslinking reaction by forming peroxysiloxane groups or by reacting with EⲠcentres yielding siloxane groups.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Franco Cataldo, Donatella Capitani, Noemi Proietti, Pietro Ragni,