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Article Dans Une Revue Polymer Année : 2005

Poly(dimethyl amino ethyl methacrylate) grafted natural rubber by seeded emulsion polymerization

Résumé

The grafting efficiency of dimethylaminoethylmethacrylate (DMAEMA) on to natural rubber (NR) has been studied. Grafting was by ‘topology-controlled’ emulsion polymerization, whereby polymerization is initiated by a redox couple where one component (tetraethylene pentamine) is hydrophilic and the other (cumene hydroperoxide) is hydrophobic. This should promote grafting at the interface between hydrophobic natural rubber particles and the hydrophilic DMAEMA. The effects of different amounts of monomer were examined, with NMR to obtain the percent branching, transmission electron microscopy to obtain information on morphology, gel fraction measurement and dynamic mechanical analysis to obtain information on mechanical properties. Although there will be significant amounts of ungrafted polyDMAEMA present, there is good evidence for the formation of graft copolymers of NR with core-shell morphology, and significant amounts of grafting, at high concentrations of monomer

Domaines

Matériaux
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Dates et versions

hal-00436802 , version 1 (27-11-2009)

Identifiants

  • HAL Id : hal-00436802 , version 1

Citer

Pedro C. Oliveira, Alessandro Guimaraes, Robert G. Gilbert, Jean-Yves Cavaille, Laurent Chazeau, et al.. Poly(dimethyl amino ethyl methacrylate) grafted natural rubber by seeded emulsion polymerization. Polymer, 2005, pp.1105-1111. ⟨hal-00436802⟩
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