POSO-MA-SAS三元共聚物的制备及脱墨应用

Synthesis of terpolymer surfactant POSO-MA-SAS and its deinking performance

以山梨酸钾(POSO)、丙烯酸甲酯(MA)和烯丙基磺酸钠(SAS)为单体通过共聚反应制得POSO-MA-SAS三元共聚物阴离子表面活性剂.研究了最佳合成工艺,考察了共聚物在洗涤法废纸脱墨中的应用,复配后与市售脱墨剂进行了对比.结果表明,当n(POSO)∶n(MA)∶n(SAS)=1∶3∶1,聚合反应温度为90℃,聚合反应时间5h,引发剂用量为单体总质量6%时,共聚物具有较好洗涤脱墨效果;共聚物与AES复配使用时洗涤脱墨效果进一步提高,当m(POSO-MA-SAS)∶m(AES)=1∶1,用量为0.2%时,脱墨后成纸白度相比市售脱墨剂提高3.8%ISO,残余油墨量仅为49.53mm2·m-2.

The terpolymer anionic surfactant POSO-MA-SAS was synthesized by copolymerization reaction of potassium sorbate（POSO）,methyl acrylate（MA）and sodium allyl sulfonate（SAS）.The better synthesis process and the application to waste paper deinking used washing method was studied,and terpolymer compounded performance was compared with commercial deinking agent.It was found that the better synthesis condition was determined as follows：the molar ratio of potassium sorbate（POSO）to methyl acrylate（MA）to sodium allyl sulfonate（SAS）was 1∶3∶1at 90 ℃for 5h,dosage of initiator is 6% of monomer mass fraction.The terpolymer has good deinking effect;the deinking effect was further improve when terpolymer compound with AES as the ratio 1∶1.Compound dosage was 0.2%,the whiteness of the paper deinked can be increased by 3.8%ISO compared with commercially available deinking agent and the residual ink concentration was 49.53mm^2·m^-2.