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Copolymerization of styrene and butadiene in emulsion. I. Composition of the latex particles

✍ Scribed by Burnett, G. M. ;Cameron, G. G. ;Thorat, P. L.

Publisher
Wiley (John Wiley & Sons)
Year
1970
Tongue
English
Weight
402 KB
Volume
8
Category
Article
ISSN
0449-296X

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✦ Synopsis

Abstract

The composition of the latex particles during intervals I and II of the emulsion polymerization of styrene and butadiene (initial weight ratio 71 parts butadiene:29 parts styrene) has been determined at 5, 15, and 25°C. The monomer content of the latex particles diminishes linearly with conversion. The composition ratio (weight styrene: weight butadiene inside the particles divided by weight styrene:weight butadiene in the binary phase) also decreases with conversion, the decrease being particularly marked as the end of interval II is approached. It is shown that the assumptions embodied in the theory of Medvedev et al. are incorrect. The results are compared with the recent theories of Gardon.

📜 SIMILAR VOLUMES

Copolymerization of styrene and butadien
Copolymerization of styrene and butadiene in emulsion. II. Relative rates of crosslinking and propagation
✍ Burnett, G. M. ;Cameron, G. G. ;Thorat, P. L. 📂 Article 📅 1970 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 463 KB

## Abstract For the styrene–butadiene emulsion copolymerization (71 parts butadiene:29 parts styrene) the ratio of the rate coefficients for crosslinking, __k__~__x__~, and propagation, __k__~__p__~, have been determined at 5, 15, and 25°C by using an adaption of the method of Morton and co‐workers