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Title: Radiation-initiated emulsion copolymerization of styrene and carboxylic acid monomers. [Gamma radiation]

Abstract

The emulsion copolymerization of styrene and carboxylic acid monomers such as acrylic, methacrylic, and itaconic acids (AAc, MAAc, IAc) was studied by using /sup 60/Co ..gamma..-rays as initiator and sodium dodecylsulfate as emulsifier. The polymerization behavior of these acid monomers was followed by simultaneous conductometric and potentiometric titrations for a latex sample taken in polymerization. The polymerization rate of these acid monomers increases in the following order of hydrophobicity: IAc < AAc < MAAc; this suggests that their polymerization sites are mainly the surface and/or subsurface regions of latex particles. The copolymerization rate of styrene and acid monomer increases with an increase in the acid monomer content for AAc and MAAc, whereas for IAc the rate decreases. The particle sizes determined by the stopped-flow method reveal that this variation of copolymerization rate cannot be explained by the number of growing particles and should be attributed to another factor; for instance, the transfer rate of styrene molecules from oil droplets to growing particles.

Authors:
;
Publication Date:
Research Org.:
Japan Atomic Energy Research Inst., Gunma
OSTI Identifier:
5619121
Resource Type:
Journal Article
Journal Name:
J. Polym. Sci., Polym. Chem. Ed.; (United States)
Additional Journal Information:
Journal Volume: 20:3
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; ACRYLIC ACID; CHEMICAL RADIATION EFFECTS; ITACONIC ACID; METHACRYLIC ACID; STYRENE; COMPARATIVE EVALUATIONS; COPOLYMERIZATION; EMULSIFIERS; EXPERIMENTAL DATA; LATEX; ORGANOMETALLIC COMPOUNDS; PARTICLE SIZE; POTENTIOMETRY; RADIATION DOSES; SODIUM SULFATES; ADDITIVES; ALKALI METAL COMPOUNDS; AROMATICS; CARBOXYLIC ACIDS; CHEMICAL REACTIONS; CHEMISTRY; DATA; DICARBOXYLIC ACIDS; DOSES; ELASTOMERS; HYDROCARBONS; INFORMATION; MONOCARBOXYLIC ACIDS; NUMERICAL DATA; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; OXYGEN COMPOUNDS; POLYMERIZATION; POLYMERS; RADIATION CHEMISTRY; RADIATION EFFECTS; RUBBERS; SIZE; SODIUM COMPOUNDS; SULFATES; SULFUR COMPOUNDS; TITRATION; 400600* - Radiation Chemistry

Citation Formats

Egusa, S, and Makuuchi, K. Radiation-initiated emulsion copolymerization of styrene and carboxylic acid monomers. [Gamma radiation]. United States: N. p., 1982. Web. doi:10.1002/pol.1982.170200322.
Egusa, S, & Makuuchi, K. Radiation-initiated emulsion copolymerization of styrene and carboxylic acid monomers. [Gamma radiation]. United States. https://doi.org/10.1002/pol.1982.170200322
Egusa, S, and Makuuchi, K. Mon . "Radiation-initiated emulsion copolymerization of styrene and carboxylic acid monomers. [Gamma radiation]". United States. https://doi.org/10.1002/pol.1982.170200322.
@article{osti_5619121,
title = {Radiation-initiated emulsion copolymerization of styrene and carboxylic acid monomers. [Gamma radiation]},
author = {Egusa, S and Makuuchi, K},
abstractNote = {The emulsion copolymerization of styrene and carboxylic acid monomers such as acrylic, methacrylic, and itaconic acids (AAc, MAAc, IAc) was studied by using /sup 60/Co ..gamma..-rays as initiator and sodium dodecylsulfate as emulsifier. The polymerization behavior of these acid monomers was followed by simultaneous conductometric and potentiometric titrations for a latex sample taken in polymerization. The polymerization rate of these acid monomers increases in the following order of hydrophobicity: IAc < AAc < MAAc; this suggests that their polymerization sites are mainly the surface and/or subsurface regions of latex particles. The copolymerization rate of styrene and acid monomer increases with an increase in the acid monomer content for AAc and MAAc, whereas for IAc the rate decreases. The particle sizes determined by the stopped-flow method reveal that this variation of copolymerization rate cannot be explained by the number of growing particles and should be attributed to another factor; for instance, the transfer rate of styrene molecules from oil droplets to growing particles.},
doi = {10.1002/pol.1982.170200322},
url = {https://www.osti.gov/biblio/5619121}, journal = {J. Polym. Sci., Polym. Chem. Ed.; (United States)},
number = ,
volume = 20:3,
place = {United States},
year = {1982},
month = {3}
}