Abstract: MA/VAc/AA/AMPS tetrapolymer is synthesized through radical polymerization process with maleic anhydride (MA),vinyl acetate (VAc),acrylic acid (AA) and 2-acrylamido-2-methylpropanesulfonic acid (AMPS) as monomers,isopropyl alcohol as chain transfer agent.The structure of the tetrapolymer sample is characterized by FTIR.Taking the scale inhibition rate against calcium sulfate as study object,the effects of the mass concentration of MA/VAc/AA/AMPS scale inhibitor and pH of the system on the scale inhibiting ability of the scale inhibitor are investigated in detail.The changes of CaSO4 scale crystals after adding the scale inhibitor are detected by SEM and XRD.The results show that the scale inhibition rate against CaSO4 can reach 94.42% when the mass fraction of the scale inhibitor is 20 mg·L-1.XRD and SEM analysis indicates that MA/VAc/AA/AMPS can inhibit and destroy the growth and regularity of calcium sulfate scale crystal,causing it to break out in different degrees and therefore reducing the crystallinity of calcium scale.
龚伟, 李美兰, 刘颖, 雷小飞, 张雯静, 刘白玲. MA/VAc/AA/AMPS四元共聚物的结构特点及其阻垢性能[J]. 现代化工, 2019, 39(4): 144-148.
GONG Wei, LI Mei-lan, LIU Ying, LEI Xiao-fei, ZHANG Wen-jing, LIU Bai-ling. Structure characteristics of MA/VAc/AA/AMPS tetrapolymer and scale inhibition performance. Modern Chemical Industry, 2019, 39(4): 144-148.
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