双羟化聚天冬氨酸的阻垢性能  

STUDY ON SCALE INHIBITION PERFORMANCE OF POLYASPARTIC ACID DERIVATIVES WITH DI-HYDROXYL GROUP ON Ca_3(PO_4)_2

作　　者：赵彦生[1] 袁广薇[1] 刘永梅[1] 马兴吉[1] 郭美娟[1] 陈凯[1] 

机构地区：[1]太原理工大学化学化工学院,太原030024

出　　处：《环境化学》2009年第4期506-509,共4页Environmental Chemistry

基　　金：山西省科技攻关项目(2006031104-03);山西省自然科学基金资助项目(20051021)

摘　　要：以二乙醇胺和聚琥珀酰亚胺为原料,在水体系下,合成了一种含双羟基的聚天冬氨酸衍生物(DHPAP),产物用红外光谱进行了结构表征.研究了在不同水质条件下DHPAP对Ca3(PO4)2的阻垢性能,并与以乙醇胺改性的单羟基聚天冬氨酸衍生物(HPAP)和聚天冬氨酸(PASP)进行比较.此外,研究了水体系中[Ca2+]、[PO43-]、温度和pH值对聚合物阻垢性能的影响.结果表明,DHPAP对Ca3(PO4)2的阻垢性能优异,在用量为16mg.l-1时,DHPAP对Ca3(PO4)2的阻垢率达到92.18%,而HPAP和PASP对Ca3(PO4)2的阻垢率则分别为67.09%和25.65%.DHPAP对Ca3(PO4)2的抑制作用明显优于PASP和HPAP,DHPAP.Polyaspartic acid derivatives with di-hydroxyl group （DHPAP）were synthesized with polysuccinimide （PSI） and diethanolamine（ DEA）in water medium and the structure of products was characterized by FT-IR The scale inhibition performance of DHPAP was studied and compared with polyaspartic acid derivatives with mono-hydroxyl （HPAP） and polyaspartic acid （PASP） at the different water quality conditions. The effects of [ Ca^2＋ ], [ PO4^3-] , temperature and pH of water system on the scale inhibition performance of polymers on Ca3 （ PO4 ） 2 were studied. The result showed that DHPAP had excellent scale inhibition performance on Ca3 （ PO4 ） 2, as its dosage was 16 mg.l^-1, the scale inhibition rate reached up to 92. 18% , while the seale inhibition rate of HPAP and PASP were 67.09 % and 25.65 % , respectively, which indicated that DHPAP had a better scale inhibition performance on Ca3 （PO4 ）2than HPAP and PASP.

关 键 词：双羟化聚天冬氨酸 合成 阻垢性能 

分 类 号：TQ085.4[化学工程] TQ175.1