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Preparation of nanometer-sized poly(methacrylic acid) particles in water-in-oil microemulsions
- Source :
- Journal of Applied Polymer Science. 100:2497-2503
- Publication Year :
- 2006
- Publisher :
- Wiley, 2006.
-
Abstract
- A water-in-oil microemulsion, water-in-cyclohexane stabilized by poly(ethylene glycol) tert-octylphenyl, was developed to prepare poly(methacrylic acid) (PMAA) particles. Up to 100% conversion of the amphiphilic monomer, methacrylic acid (MAA), which could not be converted to the polymer efficiently in a dioctylsulfosuccinate sodium salt/toluene microemulsion, was achieved. The viscosity-average molecular weight of the PMAA prepared was 1.45 105 g/mol. The effects of some polymerization parameters, including the reaction temperature and the concentrations of the initiator and the monomer, on the polymerization of MAA were investigated. The results showed that the polymerization rate of MAA was slower than that of acrylamide in the microemulsions reported in the literature. The degree of conversion increased with the initiator concentration, reaction temperature, and monomer concentration. However, the stable microemulsions became turbid during the polymerization when the reaction temperature was at 70°C or at a high monomer concentration (40 wt %) The synthesized PMAA particles were spherical and had diameters in the range of 50 nm.
- Subjects :
- chemistry.chemical_classification
Poly(methacrylic acid)
Materials science
Polymers and Plastics
Bulk polymerization
Emulsion polymerization
General Chemistry
Polymer
Surfaces, Coatings and Films
chemistry.chemical_compound
Monomer
chemistry
Methacrylic acid
Polymerization
Polymer chemistry
Materials Chemistry
Microemulsion
Nuclear chemistry
Subjects
Details
- ISSN :
- 10974628 and 00218995
- Volume :
- 100
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Polymer Science
- Accession number :
- edsair.doi...........524d4d7485a9503e4a2b1648dcfe320b
- Full Text :
- https://doi.org/10.1002/app.23619