Emulsion Polymerization of MMA employing a Chain Transfer Agent of Low Environmental Impact: Iso-Octyl-3- Mercaptopropionate
The unseeded batch-emulsion polymerisation of methyl methacrylate (MMA) was investigated using the chain transfer agent iso-octyl-3- mercaptopropionate (iOMP), which exhibits a low environmental impact. The commercial iOMP is a mixture of over 10 isomers that proved adequate to control the molecular...
| Autores: | , , , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2013 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositório: | CONICET Digital (CONICET) |
| Idioma: | inglês |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/8786 |
| Acesso em linha: | http://hdl.handle.net/11336/8786 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Poly(Methyl Methacrylate) Molecular Weight Distribution https://purl.org/becyt/ford/2.4 https://purl.org/becyt/ford/2 |
| Resumo: | The unseeded batch-emulsion polymerisation of methyl methacrylate (MMA) was investigated using the chain transfer agent iso-octyl-3- mercaptopropionate (iOMP), which exhibits a low environmental impact. The commercial iOMP is a mixture of over 10 isomers that proved adequate to control the molecular weights of poly(methyl methacrylate) with a decreasing evolution of both the number- and weight-average molecular weights along the reactions. The iOMP also affects the polymerisation kinetics as a consequence of the lower reactivity of the iOMP radicals with respect to the MMA-ended radicals. Experimental results were interpreted with the help of a first principles mathematical model. |
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