𝔖 Bobbio Scriptorium
✦   LIBER   ✦

High-temperature redox-initiated emulsion polymerization of butadiene

✍ Scribed by Allen R. Padwa; Mark D. Paster

Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
451 KB
Volume
27
Category
Article
ISSN
0021-8995

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The kinetics of the ferric ethylenediaminetetraacetate (EDTA)–diisopropylbenzene hydroperoxide (DIBHP)‐sodium formaldehyde sulfoxylate (SFS) redox system were determined. The rate constant is a function of the ionic strength ΞΌ. A plot of log~10~ (rate constant), for the rate‐limiting second‐order ironβ€”SFS reaction, vs.ΞΌ^1/2^ has a slope of 1.3 with a limiting rate constant of 295 Β± 15 L. mol^βˆ’1^. min^βˆ’1^ at ΞΌ = 0. The slope of this plot decreases to essentially zero for ΞΌ > 0.06__M__. Incorporation of these results into the Smith‐Ewart model for emulsion polymerization correctly predicts the dependence of latex particle size on Fe and DIBHP concentration, but a much lower dependence on SFS concentration is observed.

πŸ“œ SIMILAR VOLUMES

Stereoregular emulsion polymerization of
Stereoregular emulsion polymerization of butadiene
✍ Hisao Ono; Tadaya Kato πŸ“‚ Article πŸ“… 2000 πŸ› John Wiley and Sons 🌐 English βš– 184 KB πŸ‘ 2 views

water is usually recognized as a strong inhibitor of transition-metal polymerization. By analyzing the addition order effect of the ingredients, we show that the reduction of cobalt in the presence of butadiene is necessary for the polymerization. Radical-polymerization inhibitors such as phenols di