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Preparation of nanometer-sized poly(methacrylic acid) particles in water-in-oil microemulsions
journal contributionposted on 2016-06-20, 11:52 authored by Qiuyu Zhang, Xujin BaoXujin Bao, Mian Lin, Douglas Hourston
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.
- Aeronautical, Automotive, Chemical and Materials Engineering
Published inJOURNAL OF APPLIED POLYMER SCIENCE
Pages2497 - 2503 (7)
CitationZHANG, Q. ... et al, 2006. Preparation of nanometer-sized poly(methacrylic acid) particles in water-in-oil microemulsions. Journal of Applied Polymer Science, 100 (3), pp.2497-2503
Publisher© John Wiley & Sons Inc.
- NA (Not Applicable or Unknown)
Publisher statementThis work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/
NotesThis paper is closed access.