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A STUDY ON HIGH SOLID CONTENT AND STABLE EMULSIFIER-FREE EMULSION POLYMERIZATION——MMA/BA/MAA(AA) EMULSIFIER-FREE EMULSION POLYMERIZATION SYSTEM

Tang Guangliang, Hao Guangjie, Song Moudao, Zhang Banghua (Institute of Polymer Chemistry, The State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Nankai University, Tianjin, 300071)  
In this article, monomers allylglycerdyl ether sulfosalt (AGES) and methacrylic acid or acrylic acid were used in the MMA/BA emulsifier free emulsion polymerization system. Particle size and fluid behavior of the latexes, dynamic mechanical behavior, stress strain behavior, and water resistance of the copolymers were investigated. The experimental results showed that with the addition of copolymerizable monomers, stable latexes with solid content reached as high as 60% were obtained, latex particles were about 0.4μm in diameter, flow behavior of the latexes followed the Bingham fluid. In addition, tensile strength of the obtained actactic copolymers was higher than that of conventional emulsion copolymer, and the water resistance was also greatly improved.
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