Aqueous Phase Diluents in Emulsion Polymerization of Synthetic Rubber

1953 ◽  
Vol 45 (12) ◽  
pp. 2738-2742
Author(s):  
L. H. Howland ◽  
J. A. Reynolds ◽  
R. W. Brown
Keyword(s):  
Emulsion Polymerization ◽  
Aqueous Phase ◽  
Synthetic Rubber

A Study of Synthetic Rubber Latexes by the Electron Microscope

1962 ◽  
Vol 35 (4) ◽  
pp. 1028-1040 ◽  
Author(s):  
W. Rupar ◽  
J. M. Mitchell
Keyword(s):  
Electron Microscope ◽  
Size Distribution ◽  
Emulsion Polymerization ◽  
Polymer Particles ◽  
Latex Particles ◽  
Synthetic Rubber ◽  
Unreacted Monomer ◽  
Colloidal Behavior

Abstract In emulsion polymerization the number and size of the latex particles govern not only the colloidal behavior of the reacting system but also the rate at which conversion of the monomer progresses. Because of the importance of these factors a wide variety of synthetic latexes have been studied with the electron microscope. The changes in the latex particles—from swollen monomer-polymer particles at low conversion to the final latex particles after removal of the unreacted monomer—have been observed for a typical SBR system. The effects of various post polymerization treatments on the size and size distribution of the latex particles have also been observed.

Emulsion Polymerization of Synthetic Rubber in 10-Gram Systems. An Experimental Technique

1944 ◽  
Vol 17 (2) ◽  
pp. 485-493
Author(s):  
Charles F. Fryling
Keyword(s):  
Emulsion Polymerization ◽  
Experimental Technique ◽  
Commercial Production ◽  
Synthetic Rubber ◽  
Large Numbers ◽  
Short Time

Abstract Many manufacturers of monomers, emulsifying agents, initiators, modifiers, and other ingredients going into polymerization reactions find it necessary to have a reliable polymerization procedure for testing the quality of their products. The procedure presented, despite some shortcomings, has many advantages. Minimum amounts of material are required, and large numbers of experiments can be conducted in a relatively short time. A serious effort is made to point out some of the pitfalls which beset investigators of polymerization, regardless of the type of technique employed. The best recommendation for the procedure described is that it has been used to develop certain types of synthetic rubber which are now in commercial production.

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