利用γ射线脱除聚丙烯酸酯共聚物乳液中的残余单体
REMOVAL OF RESIDUAL MONOMERS FROM EMULSIONS OF COPOLYMERS OF ACRYLATES BY r-IRRADIATION
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摘要: 丙烯酸2-乙基己酯(2-EHA)、丙烯酸丁酯(BA)、苯乙烯(St)与少量丙烯酸共聚制得的乳液,可用低剂量率的60Coγ射线(20—40rad/s)进行深度聚合,在2h内可将残余单体降至1000ppm以下,延长照射时间可以全部除净。Abstract: The residual monomers in emulsions of copolymers of 2-ethyl hexyl acrylate, butyl acrylate, styrene and a small amount of acrylic acid can be reduced through deep-polymerization by 60Co irradiation with a low dose rate (20-40 rad/s) to a concentration of less than 0.1% in two hoars. By extending the time of irradiation, the residual monomers can be removed thoroughly.
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