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Title

Free-radical polymerization of styrene in worm-like micelles

AuthorsBecerra, F.; Soltero, J. F. A.; Puig, J. E.; Schulz, P. C.; Esquena, Jordi; Solans, Conxita
KeywordsFree-radical polymerization
Cationic surfactant
Cetyltrimethylammonium tosilate (CTAT)
Wormlike micelles
UV spectroscopy
Issue Date8-Dec-2003
PublisherSpringer
CitationColloid and Polymer Science 282(2): 103-109 (2003)
AbstractThe solubilization of styrene in wormlike micelles of the cationic surfactant, cetyltrimethylammonium tosilate (CTAT), and its polymerization is examined here by UV spectroscopy, oscillatory rheometry, small angle X-ray scattering, polarizing light microscopy, and transmission electron microscopy. At low CTAT concentrations, the polymerization of styrene yields small and rigid rods in coexistence with wormlike micelles that form from the excess surfactant after the polymerization process. At high CTAT concentrations, polymeric rods (of large aspect ratio), spheroid polymer particles, and wormlike micelles coexist. The polymerization rate is second order, indicating that polymerization reactions end mainly by bimolecular termination.
Description7 pages, 9 figures.-- Printed version published Dec 2003.
Publisher version (URL)http://dx.doi.org/10.1007/s00396-003-0917-y
URIhttp://hdl.handle.net/10261/21321
DOI10.1007/s00396-003-0917-y
ISSN0303-402X
E-ISSN1435-1536
Appears in Collections:(IQAC) Artículos
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