Abstract
The polymerization of methyl methacrylate initiated with AIBN and inhibited with cupric bromide in DMF has been studied at from 40–70°C. Rate constants for the initiation reaction, obtained by the inhibition period method, were 6.2 × 10–7, 3.7 × 10–6, 1.42 × 10–5 and 8 × 10–5 s–1 at 40, 50, 60 and 70°C respectively, yielding an activation energy of 137.5 kJ mol–1. The acceleration period following complete inhibition was rapid and became distributed due to self-heating effects when ordinary dilatometers were used. Disc-bulb dilatometers helped to removed this distortion. Values of the ratio where kx/kp, where kx is the rate constant from the reaction between polymethyl-methacrylate radicals and the cupric salts, were greater than those obtained using cupric chloride as an inhibitor.
Keywords
ChemistryMethyl methacrylatePolymerizationBromidePolymer chemistryReaction rate constantActivation energyRadicalInduction periodNuclear chemistryInorganic chemistryKineticsOrganic chemistryPolymerCatalysis
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Publication Info
- Year
- 1971
- Type
- article
- Volume
- 67
- Issue
- 0
- Pages
- 414-419
- Citations
- 23
- Access
- Closed
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Cite This
W. I. Bengough,
W. H. Fairservice
(1971).
Effects of salts of metals on vinyl polymerization. Part 6.—Polymerization of methyl methacrylate in the presence of cupric bromide.
Transactions of the Faraday Society
, 67
(0)
, 414-419.
https://doi.org/10.1039/tf9716700414
Identifiers
- DOI
- 10.1039/tf9716700414