两种封端聚醚大单体及其共聚物制备与阻磷酸钙垢应用  

Synthesis of capped polyether macromonomers and their copolymers as antiscalants for calcium phosphate

作　　者：符嫦娥[1,2,3] 胡大华[1] 韩承辉[1] 刘海霞[1] 仓理[2] 周钰明[3] 

机构地区：[1]江苏开放大学,江苏南京210036 [2]南京化工职业技术学院,江苏南京210048 [3]东南大学化学化工学院,江苏南京211189

出　　处：《化工学报》2013年第7期2687-2695,共9页CIESC Journal

基　　金：国家自然科学基金项目(51278253);江苏省自然科学基金项目(BK2011691)~~

摘　　要：采用烯丙基聚乙二醇单醚APEO10为原料制备了大分子单体磺酸盐封端聚醚APES10和羧酸盐封端聚醚APEC10并分别与小分子单体丙烯酸AA聚合生成两种聚羧酸类阻垢剂AA/APES10和AA/APEC10,用红外光谱、核磁共振对其结构进行了表征。实验确定了聚合反应单体最佳质量比为m(APES10):m(AA)=1:1,m(APEC10):m(AA)=2:3。通过静态阻垢实验对比了两种聚合物的阻磷酸钙垢性能。结果表明,合成的两种阻垢剂AA/APES10和AA/APEC10在临界值6mg·L-1时阻磷酸钙垢率分别为92%、100%,但羧酸盐封端聚醚大单体合成的阻垢剂AA/APEC10阻磷酸钙垢能力优于磺酸盐封端聚醚大单体合成的阻垢剂,且聚合物AA/APEC10只含碳、氢、氧、钠4种元素,无氮、磷污染,可以充当循环水用环保型阻磷酸钙垢阻垢剂。Capped polyether macromonomers APES10 and APEC10 were synthesized from allyl polyethylene glycol sole ether APEO10,and their polycarboxylic acid type copolymers AA/APES10,AA/APEC10 as antiscalants were prepared from small molecule monomers acrylic acid AA.The products were characterized by FT-IR and 1H NMR and the performance of their copolymers of calcium phosphate inhibition was evaluated by the static scale-inhibiting method.The studies indicated that when mass ratio of APES10 to AA was 1∶1,APEC10 to AA was 2∶3,both AA/APEC10 and AA/APES10 had much better ability to inhibit the precipitation of calcium phosphate than other mass ratios.It was also shown that both AA/APEC10 and AA/APES10 had superior ability to inhibit the precipitation of calcium phosphate when the dosage was 6 mg·L-1,approximately showing 100%,92% inhibition,respectively.While compared to that of AA/APES10,AA/APEC10 had superior ability to control calciumphosphate deposition.Furthermore,the synthesized AA/APEC10 is an environmentally friendly antiscalant,only containing four elements of carbon（C）,hydrogen（H）,oxygen（O）,sodium（Na）,without phosphorous（P）and nitrogen（N）.AA/APEC10 is an excellent performance non-phosphorus inhibitor for calcium phosphate scaling in industrial recycling water systems.

关 键 词：聚羧酸阻垢剂 封端聚醚大单体 磷酸钙 循环水 

分 类 号：TG174[金属学及工艺—金属表面处理]