Hollow-particle latexes: Preparation and properties (pages 1435–1449)
V. N. Pavlyuchenko, O. V. Sorochinskaya, S. S. Ivanchev, V. V. Klubin, G. S. Kreichman, V. P. Budtov, M. Skrifvars, E. Halme and J. Koskinen
Article first published online: 19 MAR 2001 | DOI: 10.1002/pola.1120
The preparation of hollow-particle latexes was considered according to the following pathways: (1) core monomers (methyl methacrylate + methacrylic acid + ethylene glycol dimethacrylate) copolymerization, (2) shell monomer (styrene or styrene + acrylonitrile + divinyl benzene) copolymerization, and (3) the neutralization of carboxylated units with ammonia or sodium hydroxide and swelling of the particles followed by the formation of hollows filled with water. The following parameters were shown to be mostly responsible for the hollow-particle geometry (overall diameter and shell thickness): (1) the core polymer/shell polymer ratio, (2) the type and concentration of base used for neutralization, and (3) the neutralization temperature. The opacity of the coatings prepared on the basis of hollow particles was considered.