Synthesis of poly(methyl methacrylate)-g-poly(dimethyl siloxane) graft copolymers via a miniemulsion process

Abstract

In this article, we describe the synthesis of a PMMA-g-PDMS graft copolymer via a miniemulsion process. A highly hydrophobic PDMS macromonomer was copolymerized in the presence of MMA. Latex particles were obtained with a high yield and a complete incorporation of the macromonomer by using AIBN as initiator, SDS as a surfactant and a PMMA-b-PEO block copolymer as a cosurfactant, with a given amount of methanol in order to reduce the interfacial tension. The characterization of the resulting latex by 1 H NMR and QELS evidenced the interest of such a process in order to copolymerize monomers with very different solubilities and to obtain directly a graft copolymer in aqueous dispersion.

Polydimethylsiloxane latexes and copolymers by polymerization and polyaddition in miniemulsion

“…This is why the employment of miniemulsions is a promising alternative to broaden the range of accessible PDMS structures in dispersion. This was recently first evidenced by Stumbe et al [12] and will be analyzed in the present paper in a broader context.…”

Macromolecular surfactants for miniemulsion polymerization

“…Alternatively, other authors reported a beneficial effect of adding significant amounts of methanol (10-20% in volume) in the aqueous phase of MMA miniemulsion polymerization since this solute lowered the interfacial tension. The stabilizing species were a mixture of SDS and PMMA-b-EO copolymer [64]. Nevertheless, the question may arise of the occurrence of homogeneous nucleation since the addition of methanol in water increases significantly the solubility of MMA.…”

Waterborne Polyurethane−Acrylic Hybrid Nanoparticles by Miniemulsion Polymerization: Applications in Pressure-Sensitive Adhesives

“…Waterborne polymer-polymer hybrid latexes have attracted a great deal of interest both in academia and in industry owing to the opportunity that they bring to develop environmentally friendly materials that combine the positive properties of both polymers in a synergistic way. Although most of the studies reported in the past have focused on coatings applications, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] there have been recent reports of hybrid latex particles of acrylic and tackifier in adhesive applications. 16 Polyurethane-acrylic hybrid waterborne nanoparticles, which are the subject of the present work, have been used recently to produce pressuresensitive adhesives (PSAs).…”