聚天冬氨酸-丝氨酸接枝聚合物的合成及阻垢性能

Poly(aspartic acid)-Serine Grafted Copolymer and Its Scale-Inhibition Performance

目的研究聚天冬氨酸-丝氨酸接枝聚合物的阻垢性能。方法以聚琥珀酰亚胺为母体,以丝氨酸为接枝单体,合成出聚天冬氨酸-丝氨酸接枝聚合物(PASPSE),采用静态阻垢法分别考察了聚合时间、聚合温度、原料配比对产物阻垢性能的影响。结果聚天冬氨酸-丝氨酸接枝聚合物合成的最佳条件为聚合时间18 h、聚合温度55℃、聚琥珀酰亚胺与丝氨酸原料配比(摩尔比)为1:1。该接枝聚合物对Ca CO3垢具有良好的螯合分散作用,其Ca CO3阻垢率随温度的升高、工作时间的延长、HCO3-与Ca2+含量之比的增大而降低。在90℃高温环境下,10 mg/L PASPSE的阻垢率可达95.5%。结论在高温水系统中,PASPSE对Ca CO3垢具有较好的阻垢性能。

Objective To study the scale inhibition of poly （aspartic acid）-serine graft polymer. Methods Poly（asparticacid）-serine grafted copolymer （PASPSE） was synthesized with polysuccinimide and serine as matrix and monomer respectively.Effects of polymerization time, reaction temperature and molar ratio on the scale inhibition perfomance of t kcopolymer were analyzed with the static scale inhibition method. Results The best synthesize addition was gotten as： 18 hof reaction, 55 °C, and 1：1 polysuccinimide/serine. PASPSE had good chelating and dispersing effect on CaCO3 scale. Thescale inhibition efficiency of PASPSE on CaC03 scale decreased with the increase of temperature, time and Rario（mHcO3/Wca2＋）. In the high temperature environment of 90 ℃, the cmstation inhibitor efficiency of 10 mg/L PASPSEwas 95.5%. Conclusion PASPSE has good scale inhibition performance on CaC03 in high temperature systems.