ISSN:
0022-3832
Schlagwort(e):
Chemistry
;
Polymer and Materials Science
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
,
Physik
Notizen:
The kinetics of the emulsion polymerization of styrene are developed on the basis of the Harkins' theory of reaction loci. Only that portion of the reaction is considered in which essentially no polymer nuclei are formed. Agreement is obtained between experiment and theory when the reaction in the monomer-polymer particle is considered three-halves order with respect to monomer. This treatment is further substantiated by the fact that the concentration of monomer in the polymer, when a separate monomer phase exists, is correctly predicted by the kinetic theory. The activation energy for the polymerization of styrene in the monomer-polymer particle is calculated as 22,600 calories per mole. A dilatometer for the precise determination of monomer conversion rates in emulsion polymerization is described.
Zusätzliches Material:
4 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/pol.1947.120020301