Solvent effects on free-radical polymerization, 4. Modelling of hompolymerization
β Scribed by Czerwinski, Wojciech Krzysztof
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1993
- Weight
- 455 KB
- Volume
- 2
- Category
- Article
- ISSN
- 1018-5054
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β¦ Synopsis
Abstract
A new soβcalled reactantβsolvent complex model is proposed to describe the effect of solvent on chain propagation in homopolymerization. It takes into account complex formation of both monomer and radical with solvent by equilibria. Evaluation methods presented permit to estimate the complex equilibrium constant K which is assumed to be nearly the same for both monomer and radical complexation and the relative reactivity ratio r~11~, for complexed monomer. Measured reaction rates as function of monomer concentration are needed for calculations.
π SIMILAR VOLUMES
## Abstract For Abstract see ChemInform Abstract in Full Text.
Free-radical polymerization of vinyl esters including vinyl propionate (VPr), vinyl isobutylate (ViBu), vinyl 2,2-dimethylbutylate (VDMB), vinyl 2,2-dimethylvalerate (VDMV), vinyl 2,2-bis(trifluoromethyl)propionate (VF6Pi), and vinyl benzoate (VBz) was carried out using fluoroalcohols as solvents, a
Rates and thermodynamic data have been obtained for the reversible self-termination reaction: 2k1 R' + R' G=-D Involving aromatic 2-(4'dimethylaminophenyl)indandione-1,3-y1 (I), 244'diphenylaminophenyl)indandione-1,3-y1 (II), and 2,6 di-tert-butyl-4-(p-phthalylvinyl)-phenoxyl (III) radicals in diffe