By A cura di Giulio D'Onofrio

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Most of the early work (4) used aliphatic hydrocarbons as the dispersion medium. Recently, considerable interest (5-81 has been generated in using more polar solvents as the contmuous phase which 35 F. Candau and R. H. ), An Introduction to Polymer Colloids, 35-72. © 1990 Kluwer Academic Publishers. 36 markedly increases the range of monomers that can be polymerized using this method. It has also been found possible to prepare particles up to 15 IJm diameter (9) in a single reaction. This is not possible using emulsion polymerization.

Furthermore, the kinetics of particle formation change dramatically (21) as the amount of carbon tetrachloride in the reaction medium is increased. The reaction kinetics will be discussed in more detail in Section 4. Here we draw the important conclusion that the solvency of the dispersion medium plays a crucial role in determining the particle size of the latex that is formed. The effect of the solvency of the dispersion medium on the final particle size in polar media has been published by Lok and Ober (6) and by Paine (18).

21. 22. 23. in Industry", Consultants Bureau, New York, 1981. , New York, 1982. Marten, Land Hamielec, A. Series, 1979, 104, 43. W. H. W. 67, M. Nijhoff, The Hague, 1983, 140. C. , 1982, 20, 1299;1315;1330;1345. H. Reichert, and W. Geisler, Huthig and Wepf, Heidelberg, 1986, 275. J. , Macromolecules, 1981, 14, 1501; 1982, 459. , 1947, ~ 217. , 1948, l§. (6),592. , 1968, ~ 20. , 1963, g, 741. , in Vinyl Polymerization II, Ed. E. Ham, Dekker, New York, 1969, 210. E. , 1965, ~ 156. , 1968, g, 623;643;665; 687;2853;2859; and 1971, ~ 2763.

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