Nitroxide mediated living radical polymerization of styrene in emulsion

Macromolecules

Volumn 31, Issue 12, 1998, Pages 4041-4044

  Marestin, Catherine ^a   Noël, Catherine ^a   Guyot, Alain ^a   Claverie, Jérôme ^a  

^a CPE LYON   (France)

Author keywords

[No Author keywords available]

Indexed keywords

ALCOHOLS; AMINES; HYDROLYSIS; INITIATORS (CHEMICAL); LATEXES; MOLECULAR WEIGHT; NITROGEN OXIDES; PARTICLE SIZE ANALYSIS; POLYSTYRENES; SODIUM COMPOUNDS; SOLUBILITY; SURFACE ACTIVE AGENTS;

FIELD FLOW FRACTIONATION (FFF); LIVING RADICAL POLYMERIZATION; NITROXIDES; PHOTON CORRELATION SPECTROSCOPY;

EMULSION POLYMERIZATION;

EID: 0032098489     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma9710951     Document Type: Article

References (25)

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19. In a typical experiment, 69 g of water, 126.1 mg of amino TEMPO, 100.4 mg of KPS and 344.8 mg of SDS are added to 7.12 g of styrene in a metallic Schlenk tube. After three freeze-pump-thaw cycles, the mixture is stirred at 135°C for 36 h, giving a latex. The resulting light scattering particle size is 430 nm. The average number molecular weight is 15000. PDI = 1.3. Conversion is followed by solid content analysis of samples withdrawn from the reactor during the course of the reaction. For this purpose, the temperature is slowly decreased to about 50°C. At this temperature, the polymerization cannot proceed any more as the NO-C bond becomes unlabile.
20. 21 h of reaction are necessary for dodecanol to be observed (GC analysis).
21. Sudol, E. D.; El-Aasser, M. S. Emulsion Polymerization and Emulsion Polymers; Lovell, P. A.; El-Aasser, M. S. Eds., Wiley: New York 1997.
22. n) are equivalent for molecular weight distribution.
23. We thank a reviewer for suggesting this experiment. The miniemulsion was obtained by mixing with an ultra-turrax homogenizer the usual emulsion recipe components, AIBN instead of KPS, hexadecanol in equimolar amount relative to SDS, and TEMPO as nitroxide.
24. +).
25. In a typical experiment, 50 g of water, 57.1 mg of A, and 203 mg of SDBS are added to 5.3 g of styrene in a metallic Schlenk tube. After three freeze-pump-thaw cycles, the mixture is stirred at 135°C for 15 h, and the emulsion is collected after cooling.