丙烯酸酯压敏胶中残留单体的HPLC法测定

建立了HPLC法同时测定丙烯酸酯压敏胶中三种残留单体--乙酸乙烯酯、丙烯酸乙酯和丙烯酸正丁酯的含量.采用C_(18)色谱柱,流动相为乙腈-水(40:60),检测波长210 nm.乙酸乙烯酯、丙烯酸乙酯、丙烯酸正丁酯分别在0.04～20、0.04～20、0.2～100μg/ml浓度范围内线性关系良好,平均回收率为99.6%、100.8%和99.4%,RSD小于2%:日内、日间RSD小于3%和5%.

Determination of Residual Monomers in Acrylic Pressure Sensitive Adhesive by HPLC

An HPLC method was established for the determination of vinyl acetate.ethyl acrylate and n-butyl acrylate,the residual monomers in acrylic pressure sensitive adhesive(PSA).A C_(18) column was used with the mobile phase of acetonitrile-water(40:60)at the detection wavelength of 210 mn.The calibration curves of vinyl acetate,ethyl acrylate and n-butyl acrylate were linear in the concentration ranges of 0.04-20,0.04-20,0.2-1 00 μg/ml.The average recoveries were 99.6%,100.8%and 99.4%,respectively,with RSDs less than 2%.The RSDS of intra-and inter-day were less than 3%and 5%.