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Issue 8, 2007
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Synthesis of poly(2-hydroxypropyl methacrylate) latex particles via aqueous dispersion polymerization

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Abstract

Poly(2-hydroxypropyl methacrylate) latexes were prepared by aqueous dispersion polymerization at 60 °C using poly(N-vinylpyrrolidone) [PNVP] as a steric stabilizer. The mean latex diameter can be controlled over a wide range by varying the synthesis parameters (initiator type, stabilizer concentration, addition of co-surfactant or comonomer), and narrow size distributions were observed in most cases. These sterically-stabilized latex particles were characterized by electron microscopy, dynamic light scattering, Malvern Mastersizer and FT-IR spectroscopy. The presence of the PNVP stabilizer at the surface of the latex particles was confirmed by X-ray photoelectron spectroscopy and the stabilizer content was assessed by 1H NMR spectroscopy and nitrogen microanalyses. Colloidally stable surfactant-stabilized poly(2-hydroxypropyl methacrylate) latexes could also be prepared in the absence of any PNVP stabilizer. Since 2-hydroxypropyl methacrylate contains a small amount of dimethacrylate impurity, these latexes are actually lightly cross-linked; their degree of swelling in D2O, d4-methanol and d5-pyridine was investigated using dynamic light scattering and 1H NMR spectroscopy. Finally, three ionic water-soluble comonomers were successfully copolymerized with 2-hydroxypropyl methacrylate under aqueous dispersion conditions, as judged by aqueous electrophoresis studies.

Graphical abstract: Synthesis of poly(2-hydroxypropyl methacrylate) latex particles via aqueous dispersion polymerization

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Publication details

The article was received on 23 Mar 2007, accepted on 16 May 2007 and first published on 31 May 2007


Article type: Paper
DOI: 10.1039/B704425A
Citation: Soft Matter, 2007,3, 1003-1013
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    Synthesis of poly(2-hydroxypropyl methacrylate) latex particles via aqueous dispersion polymerization

    A. M. I. Ali, P. Pareek, L. Sewell, A. Schmid, S. Fujii, S. P. Armes and I. M. Shirley, Soft Matter, 2007, 3, 1003
    DOI: 10.1039/B704425A

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