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Dispersion polymerization of n ‐butyl acrylate
Author(s) -
Wang Danni,
Dimonie Victoria L.,
Sudol E. David,
ElAasser Mohamed S.
Publication year - 2002
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.10592
Subject(s) - dispersion polymerization , dispersity , dispersion (optics) , polymer chemistry , butyl acrylate , particle size , polymerization , materials science , acrylate , polyvinylpyrrolidone , methyl methacrylate , styrene , chemical engineering , methanol , bulk polymerization , particle size distribution , chemistry , radical polymerization , copolymer , organic chemistry , polymer , composite material , physics , optics , engineering
Abstract The dispersion polymerization of n ‐butyl acrylate (BA) was investigated using alcohol/water mixtures as the dispersion medium, 4,4′ ‐azobis‐(4‐cyanopentanoic acid) as the initiator, and polyvinylpyrrolidone (PVP) as the stabilizer. The effects of polymerization parameters, such as the alcohol/water ratio in the medium and the type and concentration of the polymeric stabilizer, on the resulting particle size and size distribution were studied. The final particle size and the stability of the dispersion system were found to be greatly influenced by the type of alcohol used in the mixture; that is, methanol or ethanol, even though the apparent solubility parameters are almost the same for the two types of mixtures. Poly(butyl acrylate) particles with controlled size and size distribution (monodisperse), and gel content were successfully prepared in a 90/10 methanol/water medium. It was found that the particle size decreased with increasing initiator concentration. This is the opposite of what was previously reported in the dispersion polymerizations of styrene and methyl methacrylate. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 84: 2692–2709, 2002