Factorial experimental design for grafting of vinyl monomers onto natural rubber latex

2004 ◽  
Vol 93 (1) ◽  
pp. 455-463 ◽  
Author(s):  
W. Arayapranee ◽  
G. L. Rempel
Keyword(s):  
Experimental Design ◽  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Vinyl Monomers ◽  
Factorial Experimental Design ◽  
Rubber Latex

The polymerization of vinyl monomers in natural rubber latex

2007 ◽  
Vol 5 (11) ◽  
pp. 609-615 ◽  
Author(s):  
George F. Bloomfield ◽  
P. Mcl. Swift
Keyword(s):  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Vinyl Monomers ◽  
Rubber Latex

Aeration of Natural Rubber Latex. II. Graft Polymerization of Vinyl Monomers with Aerated Latex Rubber

1958 ◽  
Vol 31 (3) ◽  
pp. 430-435 ◽  
Author(s):  
B. C. Sekhar
Keyword(s):  
Natural Rubber ◽  
Methyl Methacrylate ◽  
Graft Polymerization ◽  
Natural Rubber Latex ◽  
Gel Strength ◽  
Vinyl Monomers ◽  
Polymer Content ◽  
Rubber Latex ◽  
Film Forming ◽  
Vinyl Polymer

Abstract The peroxidic groups produced on the rubber hydrocarbon when oxygen is absorbed by ammonia-preserved latex are capable of initiating the graft polymerization of methyl methacrylate and other vinyl monomers, in the presence of suitable reducing agents. The products so formed contain only small proportions of unbound homopolymer. In the latex state, the products have a much higher wet gel strength and better film forming properties than materials of the same total vinyl polymer content prepared by other methods.

The Polymerization of Vinyl Monomers in Natural-Rubber Latex

1956 ◽  
Vol 29 (4) ◽  
pp. 1119-1126 ◽  
Author(s):  
George F. Bloomfield ◽  
P. McL. Swift
Keyword(s):  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Vinyl Monomers ◽  
Rubber Latex ◽  
Dispersing Agent ◽  
Rubber Particles ◽  
Surface Active ◽  
Active Substances

Abstract Practical methods are described for polymerizing methacrylic esters, styrene, and other vinyl monomers in natural-rubber latex. The larger rubber particles require an appreciable time to attain equilibrium with the monomer diffusing into them from a liquid monomer phase dispersed in the serum. Provided that substantial proportions of added surface-active substances are avoided, rubber-soluble monomers can be polymerized almost entirely within the rubber particles, and the modified latex then contains no separately emulsified free polymer. Such conditions favor combination of polymer with rubber. The addition of a sufficiently large amount of dispersing agent favors polymerization of emulsified monomer, with less involvement of the rubber. In this way there can be obtained mixtures of rubber and polymer from monomers whose polymerization is otherwise inhibited by the presence of polyisoprene hydrocarbons.

Polymerization of Vinyl Monomers in Rubber Latexes

1960 ◽  
Vol 33 (3) ◽  
pp. 825-833 ◽  
Author(s):  
P. W. Allen ◽  
C. L. M. Bell ◽  
E. G. Cockbain
Keyword(s):  
Natural Rubber ◽  
Methyl Methacrylate ◽  
Kinetic Study ◽  
Graft Copolymers ◽  
Natural Rubber Latex ◽  
Kinetic Studies ◽  
Vinyl Monomers ◽  
Rubber Latex

Abstract In recent years numerous workers have reported on the polymerization of vinyl monomers, in the presence of polymers, in which graft copolymers and/or homopolymers are formed. Kinetic studies of such reactions have been relatively few, however, particularly for systems involving polymer latexes rather than solutions. In the present paper a kinetic study of the polymerization of styrene, methyl methacrylate, and homologous methacrylic esters in natural rubber latex is reported, and certain abnormal features of the polymerizations are discussed.

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