ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Batch emulsion copolymerizations of n-butyl acrylate (B) and styrene (S) have been carried out, using either potassium persulfate or “azocarboxy” as initiators and sodium dodecyl sulfate as emulsifier. Particle size vs conversion studies, within a broad range of initiator (0,37 to 3,3.10-3 mol. 1-1) and emulsifier (0,6 to 18.10-3 mol. 1-1) concentrations, 1/1 comonomer ratio and for two solid contents (20 and 50 %), have been investigated through dynamic light scattering and transmission electron microscopy methods. Molecular weight and surface characteristics of the emulsion copolymers were also estimated. From the results, it is suggested that, due to the water solubility of the n-butyl acrylate, the particle formation in this system follows a homogeneous nucleation mechanism where the limited flocculation step is strongly dependent upon the stabilizing properties of the latex.
Additional Material:
9 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1985.020101985108
