R6sum~-La copolym6risation de l'acrylate d'&hyle et du styrdne en 6mulsion en r6acteur ferm6, a 6t6 effectu6e fi diff6rentes compositions du m61ange monom6re et pour deux rapports monomdres/eau (M/E = 0,2 et 0,5). La polym6risation de l'acrylate d'6thyle en phase aqueuse en d6but de polym6risaton, a
Copolymérisation en émulsion styrène-acrylate de butyle en réacteur fermé
✍ Scribed by E., M. A. Cruz ;A., J. Palacios ;Rejón, A. García ;F., L. M. Ruiz ;G., L. Rios
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1985
- Weight
- 515 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0025-116X
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✦ Synopsis
The emulsion copolymerization kinetics of styrene-butyl acrylate was studied in a batch process. The effect of the initiator, emulsifier, chain transfer agent and monomer Concentration on copolymerization rate and molecular weight distribution is discussed. Thermal and viscoelastic properties of copolymers were measured. It was found that the n-dodecylthiol introduced into the reactor with the monomers did not affect the copolymerization rate (no redox reaction with the initiator) but the molecular weight was strongly dependent upon its concentration. These two kinetic parameters increase with increasing the butyl acrylate concentration.
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