6533b838fe1ef96bd12a4687
RESEARCH PRODUCT
Polymerization of methyl methacrylate through ionizing radiation in CO2-based dense systems
E. CalderaroGiuseppe CaputoGiuseppe FilardoGiuseppe SpadaroAlessandro Galiasubject
Dispersion polymerizationchemistry.chemical_classificationPolymers and PlasticsOrganic ChemistryPolymerInorganic ChemistryGel permeation chromatographychemistry.chemical_compoundChain-growth polymerizationchemistryPolymerizationChemical engineeringPolymer chemistrySupercritical fluids polymersMaterials ChemistrySolubilityMethyl methacrylateIonic polymerizationdescription
Herein, we report the use of ionizing radiation to induce a dispersion polymerization reaction in dense CO2. As a model system, the polymerization of methyl methacrylate in the presence of poly(dimethylsiloxane) stabilizers was investigated. It was demonstrated that the dose plays the key role in the progress of the reaction and in the morphology of the resulting polymer. Dispersion polymerization carried out in the presence of mono- and bifunctionalized surfactants gave differently structured polymers. The polymers obtained have been characterized by scanning electron microscopy, solubility tests, and gel permeation chromatography, and the molecular structure has been related to dynamic mechanical behavior in the melt state.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-01-06 |