The Hg 6(3P1) photosensitized decomposition of methyl vinyl ether

1970 ◽  
Vol 48 (6) ◽  
pp. 924-926 ◽  
Author(s):  
R. V. Morris ◽  
S. V. Filseth
Keyword(s):  
Hydrogen Bond ◽  
Vinyl Ether ◽  
Vapor Phase ◽  
Bond Breaking ◽  
Primary Process ◽  
Static System ◽  
Direct Production ◽  
Methyl Vinyl ◽  
Methyl Vinyl Ether ◽  
Vinoxy Radicals

The mercury 6(3P1) photosensitized decomposition of methyl vinyl ether has been studied in the vapor phase in a static system at 55 °C between 0.2 and 10.0 Torr. The principal products are propanal and ethane. It is concluded that the primary process involves the direct production of methyl and vinoxy radicals with no more than 3% participation of a competing step producing ethylene. Neither carbon–hydrogen bond breaking nor the production of primary excited molecules is observed.

Mécanisme de la décomposition photosensibilisée au mercure du méthylvinyléther à 2537 Å

1971 ◽  
Vol 49 (12) ◽  
pp. 2125-2131 ◽  
Author(s):  
J. Castonguay ◽  
Y. Rousseau
Keyword(s):  
Free Radical ◽  
Quantum Yield ◽  
Vinyl Ether ◽  
Radical Reactions ◽  
Second Primary ◽  
Primary Process ◽  
Static System ◽  
Free Radical Reactions ◽  
Methyl Vinyl ◽  
Methyl Vinyl Ether

The study of the mercury Hg6(3P1) photosensitized decomposition of methyl vinyl ether has been studied in a static system at substrate pressures from 10 to 800 Torr. The excited precursor proposed has a calculated lifetime of 1.18 × 10−10 s and its decomposition proceeds almost exclusively through the rupture of the O—CH3 bond. A second primary process is the intramolecular formation of ethylene but it accounts only for 2% of the total ether decomposition. The major products are shown to be formed by free radical reactions and the overall reactivity appears to be very similar to that of the olefins. The results obtained with CH3SH added to the system indicate that the primary radicals are formed with a quantum yield close to unity.

Thermal gravimetric analysis of in-situ crosslinked nanocellulose whiskers • poly(methyl vinyl ether-co-maleic acid) • polyethylene glycol

TAPPI Journal ◽  
2011 ◽  
Vol 10 (4) ◽  
pp. 29-33
Author(s):  
LEE A. GOETZ ◽  
AJI P. MATHEW ◽  
KRISTIINA OKSMAN ◽  
ARTHUR J. RAGAUSKAS
Keyword(s):  
Thermal Stability ◽  
Polyethylene Glycol ◽  
Vinyl Ether ◽  
Thermal Gravimetric Analysis ◽  
Maleic Acid ◽  
Gravimetric Analysis ◽  
Thermal Gravimetric ◽  
Methyl Vinyl ◽  
Methyl Vinyl Ether

The thermal stability and decomposition of in-situ crosslinked nanocellulose whiskers – poly(methyl vinyl ether-co-maleic acid) – polyethylene glycol formulations (PMVEMA-PEG), (25%, 50%, and 75% whiskers) – were investigated using thermal gravimetric analysis (TGA) methods. The thermal degradation behavior of the films varied according to the percent cellulose whiskers in each formulation. The presence of cellulose whiskers increased the thermal stability of the PMVEMA-PEG matrix.

scholarly journals Conformational isomerism in methyl vinyl ether

1969 ◽  
Vol 22 (7) ◽  
pp. 1539 ◽  
Author(s):  
MJ Aroney ◽  
RJW Le Fevre ◽  
GLD Ritchie ◽  
JD Saxby
Keyword(s):  
Vinyl Ether ◽  
Conformational Isomerism ◽  
Methyl Vinyl ◽  
Methyl Vinyl Ether
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