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Kinetics and mechanism of the emulsion polymerization of vinyl acetate by redox initiation

โœ Scribed by A. S. Badran; S. M. M. Shendy

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
674 KB
Volume
42
Category
Article
ISSN
0323-7648

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โœฆ Synopsis

Kinetics and mechanism of the emulsion polymerization of vinyl acetate by redox initiation

2. L.cperittwnlrt1

'l'lie experimental riiethods crnployt:tl wen: itlentical with ttiosc described previously [17, IS].

The image analyzer (Biltlanalyse IBAS 1 arid 3) was used to measure t h e average diameters and average area of different polymer particles. Also, i t was used t o plot absolute frequency (ABS frequency) agninst area and rnaxinititii diameter (,!Imax). The number of polymer particles p i x unit volirmn of water (iV,) was calcdatetl from the monoitier vonvcrsion Slk Tlie volume average iliarnctcr OF tlic polymer particles d, was cletermiiiecl by a transmissioii crlec~ti~c~ri microscope using the following cqriations:

hi,, is tltv initial inonomcr ronccittration iiii(l p,, is the (Lensity of the polynicr.

๐Ÿ“œ SIMILAR VOLUMES

Kinetics of vinyl chloride and vinyl ace
Kinetics of vinyl chloride and vinyl acetate emulsion polymerization
โœ N. Friis; A. E. Hamielec ๐Ÿ“‚ Article ๐Ÿ“… 1975 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 707 KB

## Abstract The kinetics of vinyl chloride and vinyl acetate emulsion polymerization are reexamined. The validity of Ugelstad's model for systems with high desorption rate is confirmed by simulating conversion histories for both systems at different initiator concentrations and particle numbers. On

Reaction kinetics of vinyl acetate emuls
Reaction kinetics of vinyl acetate emulsion polymerization
โœ Chorng-Shyan Chern; Gary W. Poehlein ๐Ÿ“‚ Article ๐Ÿ“… 1987 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 913 KB

Transport of free radicals out of latex particles into the aqueous phase plays an important role in the emulsion polymerization of vinyl acetate. This so-called "desorption" process involves chain transfer to monomer which generates a mobile an8 rather stable monomer-unit free radical followed by th

A kinetic study of the emulsion polymeri
A kinetic study of the emulsion polymerization of vinyl acetate
โœ N. Friis; L. Nyhagen ๐Ÿ“‚ Article ๐Ÿ“… 1973 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 697 KB

The emulsion polymerization of vinyl acetate was studied a t 50ยฐC. It was found that the rate of polymerization was proportional to the 0.5 power of the initiator concentration and the 0.25 power of the number of particles. The number of particles was proportional to the power 0.5 f 0.05 of the emul