Synthesis and Scale Inhibition of a Polyether-typed Non-phosphorus Copolymer
LI Na1, FU Change2, ZHOU Yuming3, LU Yipin1, YANG Weiben1*
(1.College of Chemistry and Materials Science,Nanjing Normal University,Nanjing 210097,China;
2.Jiangsu TV Radio University,Nanjing 210036,China;
3.School of Chemistry and Chemical Engineering,Southeast University,Nanjing 211189，China)
Abstract：A new type of polyether copolymer—allyloxy polyether carboxylic acid sodium/acrylic acid(APEX/AA) was synthesized using water as solvent and APEX and AA as monomers. Polymer APEX/AA was characterized by infrared spectroscopy, thermogravimetric analysis and gel permeation chromatography. The dosage of APEX/AA, calcium ion concentration in solution, pH and temperature were evaluated on phosphate calcium scale inhibition efficiency through static method. The results show that the polymer APEX/AA has good thermal stability at temperature above 350 ℃, and its relative molecular mass distribution is controllable(PDI=1.41～1.88). The phosphate calcium scale inhibition efficiency of APEX/AA reached 100% when a concentration of 6 mg/L aqueous system was used. The results show that APEX/AA is suitable for water with a high calcium ion concentration（200~2000 mg/L）, high pH（7.5~11.0） and high temperature(75~95 ℃). The scale inhibition effect of APEX/AA is superior to that of commercial calcium phosphate scale inhibitors such as 1-hydroxyethylidine-1,1-diphosphonic acid(HEDP), hydroxypropyl acrylate/acrylic acid(T-225) and 2-phosphonobutane-1,2,4-tricarboxylic acid(PBTCA), indicating that APEX/AA is an excellent non-phosphorus phosphate calcium scale inhibitor in the industrial circulating water systems.
李娜1,符嫦娥2,周钰明3,陆祎品1,杨维本1*. 聚醚型无磷共聚物的合成及其阻垢性能[J]. 应用化学, 10.3724/SP.J.1095.2013.20347.
LI Na1, FU Change2, ZHOU Yuming3, LU Yipin1, YANG Weiben1*. Synthesis and Scale Inhibition of a Polyether-typed Non-phosphorus Copolymer. Chinese Journal of Applied Chemistry, 2013, 30(05): 528-533.