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Soap-free emulsion copolymerization of polyvinyl acetate/maleic acid/butyl acrylate
YU Ma-hong
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Abstract
The copolymer of polyvinyl acetate/maleic acid/butyl acrylate was prepared by emulsifier-free emulsion process.Analysis method of TEM was used to characterize the particle size and the morphology and studied the particle growth mechanicm.The influence of the proportion of monomers and the pH value on conversion rate,water absorption,tensile strength and stability of the emulsion was studied.The results indicated that when the contents of maleic acid and butyl acrylate were 3% and 8% of amount of mixed monomers,respectively,and the pH value was of 6 the copolymer emulsion showed the best performance.