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Title: Preparation of nanometer-sized poly(methacrylic acid) particles in water-in-oil microemulsions
Authors: Zhang, Qiuyu
Bao, Xujin
Lin, Mian
Hourston, Douglas J.
Keywords: Poly(methacrylic acid)
Microemulsion polymerisation
Nanoparticles
Issue Date: 2006
Publisher: © John Wiley & Sons Inc.
Citation: ZHANG, 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
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.
Description: This paper is closed access.
Version: Closed access
DOI: 10.1002/app.23619
URI: https://dspace.lboro.ac.uk/2134/21720
Publisher Link: http://dx.doi.org/10.1002/app.23619
ISSN: 0021-8995
Appears in Collections:Closed Access (Materials)

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