Dilute solutions (2 x 10 -3 M) of poly(para-propionylstyrene) were exposed to long-wave u.v. radiation (2 ~> 300 rim) under high vacuum at 25ยฐC. Methane and ethane were formed, their quantum yields [<10-4mol(einstein) -I] being lower than those observed for the solid state photolysis. Both s-cleavag
Photoreactions of poly(vinylacetophenone) in solution
โ Scribed by Neil A. Weir; Kenneth Whiting
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 413 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0014-3057
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๐ SIMILAR VOLUMES
Films made from poly(styrene) hydroperoxide (PSOOH) and poly(vinylacetophenone) (PVAP) were exposed to long-wave (2/> 300 nm) u.v. radiation under high vacuum at 25 + I ยฐ. The presence of PVAP considerably enhanced the rate of decomposition of PSOOH, the quantum yield increasing by a factor of 2.5.
Films made from blends of poly(st)rene) (PSI and pob(vinylacetophcnone) (PVAP) {up to 12% mol PVAP) were exposed undcr high vacuum to long wave u.v. radiation 12 > 300nm). Spectral changes {phosphorescence, NMR and i.r. indicated that PVAP was photolysed: the nature of gaseous products (in order of
The photochemistry of isotopically labelled poly(vinylacetophenone) (PVAP) has been investigated, with a view to determining the point of H-atom abstraction from the polymer. Poly(ct-Dvinylacetophenone) (DPVAP) and poly [3.[3 dideuterovinyl(acetophenone) (D2PVAP) were irradiated under high vacuum wi