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The manganic hydroxide–hydrazine system as an initiator of vinyl polymerization. IV. The emulsion polymerization of methyl methacrylate
Author(s) -
Rahman A.,
Brown C. W.
Publication year - 1979
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1979.070231021
Subject(s) - hydrazine (antidepressant) , chemistry , emulsion polymerization , hydrate , polymerization , methyl methacrylate , polymer chemistry , sodium hydroxide , potassium hydroxide , hydroxide , inorganic chemistry , organic chemistry , polymer , chromatography
The behavior of the emulsifier sodium dodecyl sulfate and electrolyte sodium hydroxide was studied at the oxidation stage and beyond in the emulsion polymerization of methyl methacrylate initiated by the manganic hydroxide–hydrazine hydrate system. From the rate of polymerization and from the adsorption of hydrazine it was shown that addition of emulsifier is more effective at the oxidation stage than after. But the reverse is obtained with the electrolyte. The effect of hydrazine concentration was also studied. The results are explained on the basis of a surface reaction between hydrazine hydrate and the insoluble manganic hydroxide.