POLYMERIZATION OF VINYL-ACETATE IN TERNARY MICROEMULSIONS STABILIZED WITH HEXADECYLTRIMETHYLAMMONIUM BROMIDE

Authors
LOPEZ RG TREVINO ME SALAZAR LV PERALTA RD BECERRA F PUIG JE MENDIZABAL E
Citation
Rg. Lopez et al., POLYMERIZATION OF VINYL-ACETATE IN TERNARY MICROEMULSIONS STABILIZED WITH HEXADECYLTRIMETHYLAMMONIUM BROMIDE, Polymer bulletin, 38(4), 1997, pp. 411-417
Citations number
26
Categorie Soggetti
Polymer Sciences
Journal title
Polymer bulletin → ACNP
ISSN journal
01700839
Volume
38
Issue
4
Year of publication
1997
Pages
411 - 417
Database
ISI
SICI code
0170-0839(1997)38:4<411:POVITM>2.0.ZU;2-Z
Abstract
The polymerization of vinyl acetate (VA) in three component o/w microe mulsions stabilized with the cationic surfactant, CTAB, is presented. Initiation is achieved thermally with a water soluble initiator (V-50) . Stable latex containing small particles (ca. 35 nm) with molecular w eights (M-w) of around 4 x 10(5) are obtained. Analysis of the molecul ar weight distribution suggests that chain transfer to monomer (and no t to polymer, which is the typical termination mechanism in emulsion p olymerization, specially at high conversions) is the dominant mechanis m of termination.