Preparation of surfactant-free vinyl polymers by conventional emulsion polymerization using hydrolysable emulsifiers

Emulsion polymerizations of several vinyl monomers, styrene, methyl methacrylate, butyl methacrylate, butyl acrylate, and vinyl acetate, in water using alkali–hydrolysable cationic surfactants with a betaine ester group (1-alkoxycarbonylmethyl)trimethylammonium chlorides, as emulsifiers were carried...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2011-11, Vol.67 (8), p.1455-1462
Main Authors: Itoh, Yoshihiro, Sahara, Fumiya, Ozaki, Kaori, Akasaka, Ryo, Teramoto, Akira
Format: Article
Language:English
Subjects:
Applied sciences
Aqueous solutions
Bulk polymerization
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Emulsifiers
Emulsion polymerization
Exact sciences and technology
Hydrocarbons
Latex
Monomers
Organic Chemistry
Organic polymers
Original Paper
Particle size
Physical Chemistry
Physicochemistry of polymers
Polymer films
Polymer Sciences
Polymerization
Polymers
Polymethyl methacrylate
Preparation, kinetics, thermodynamics, mechanism and catalysts
Salting
Sodium hydroxide
Soft and Granular Matter
Spectrum analysis
Surfactants
Vinyl acetate
Vinyl polymers
Viscosity
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Summary:Emulsion polymerizations of several vinyl monomers, styrene, methyl methacrylate, butyl methacrylate, butyl acrylate, and vinyl acetate, in water using alkali–hydrolysable cationic surfactants with a betaine ester group (1-alkoxycarbonylmethyl)trimethylammonium chlorides, as emulsifiers were carried out and properties of the resulting latices and the polymers recovered by hydrolysis and salting out were investigated. There were little influences of the surfactants and monomers used here on the polymerizations, forming stable and monodisperse latices with a mean diameter of ca. 70 nm and giving a high molecular weight of polymers at high yields. All polymers were precipitated and recovered by adding a small amount of sodium hydroxide into the latex solutions contained little amount of ionic species. Solvent-cast films of the polymers were found to have surfaces as hydrophobic as those for the corresponding pure polymers prepared by bulk polymerization.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-011-0462-7