Abstract
Photodegradation and electron-beam-induced degradation of poly[(pentamethyldisilyl)styrene sulfone]s were investigated by flash and pulse radiolysis techniques. The transient absorption spectra obtained by the flash photolysis for the solution of nonalternating poly [(pentamethyldisilyl)styrene sulfone]s in THF (tetrahydrofuran) showed the formation of benzyl radical as a transient intermediate. On the other hand, the transient absorption spectra for an alternating poly [(pentamethyldisilyl)styrene sulfone] did not show the absorption of benzyl radical but showed that of p-(pentamethyldisilyl)styrene monomer. The decay curve for an alternating poly [(pentamethyldisilyl) styrene sulfone] exhibited fast depropagation after the flash photolysis. The disilyl bond in the polymer dissociates easily by photolysis whereas the bond was stable under electron-beam irradiation. The transient absorption spectra of a radical anion of the sulfonyl group was observed by pulse radiolysis for the solution of poly[(pentamethyldisilyl)styrene sulfone]s in THF.
| Original language | English |
|---|---|
| Pages (from-to) | 692-697 |
| Number of pages | 6 |
| Journal | Macromolecules |
| Volume | 25 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1992 Mar 1 |
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
- Inorganic Chemistry
- Materials Chemistry