IAEO-AA-SMAS三元共聚物表面活性剂的制备及在浮选法脱墨中的应用

Preparation of Terpolymer Surfactant IAEO-AA-SMAS and Its Application on Wastepaper Deinking

以月桂醇聚氧乙烯醚衣康酸单酯(IAEO)、丙烯酸(AA)、甲基丙烯磺酸钠(SMAS)为原料通过共聚反应制得IAEO-AA-SMAS三元共聚物表面活性剂,考察其最佳合成工艺,研究该产物在浮选法废纸脱墨中的应用。用IR对所制备的表面活性剂的分子结构进行表征,以GPC测定其分子量及分布,并通过SEM对比其与市售脱墨剂的脱墨效果。结果表明:当n(IAEO):n(AA):n(SMAS)为1:2:1,聚合温度85℃,聚合时间5.5 h,w(引发剂)用量1.5%时,制成的表面活性剂有最佳的脱墨效果。当其用量为0.2%时,废旧杂志纸脱墨后白度提高10.4%ISO,残余油墨量下降193.1 mm2·m-2,效果优于同类市售脱墨剂。

Terpolymer surfactant IAEO-AA-SMAS was synthesized by luaryl polyoxyethylene ether itaconate ester （IAEO）, acrylic acid （AA） and sodium methallyl sulfonate （SMAS）. Its synthesis process and application on deinking were studied. The structure of polymer was characterized by FT-IR, the relative molecular mass and its distribution of the product was measured by GPC and the deinking effect between the own and the commercial was compared by SEM. The results showed that the molar ratio of IAEO to AA to SMAS is 1：2：1 at 85℃ for 5.5 hr with 1.5% initiator concentration of total monomer mass has the best deinking effect. When the dosage of product is 0.2%, the whiteness of the deinked pulp can be increased by 10.4% ISO and the effective residual ink concentration can be decreased by 193.1 mm2·m-2 which is superior to the commercial deinking agents.