环境友好型聚天冬氨酸衍生物的合成及其阻垢性能  

Synthesis of Friendly-to-environment Polyaspartic Acid Derivative and Its Characteristics in Scale Inhibition

作　　者：佟欣佳[1] 柳鑫华[1] 丁云飞[1] 张雪明[1] 

机构地区：[1]河北联合大学轻工学院,唐山063000

出　　处：《表面技术》2013年第5期62-65,80,共5页Surface Technology

基　　金：河北省科技局科技攻关项目(06213027)

摘　　要：利用马来酸酐热缩聚产物聚琥珀酰亚胺(PSI)和硫脲,合成了一种聚天冬氨酸衍生物。优化了PSI与硫脲的反应条件,通过红外光谱对聚天冬氨酸衍生物的结构进行了表征,考察了聚天冬氨酸衍生物的阻垢性能,分析了其阻垢机制。结果表明:以硫脲对PSI进行开环,当硫脲用量为1 g,改性缩聚温度为100℃,反应时间为2.5 h时,获得改性PASP产品的阻垢效果最佳;红外光谱证明了硫脲的一个氨基与原支链上的羧基发生缩合,生成酰胺键,在聚天冬氨酸侧链上增加了新的官能团;聚天冬氨酸衍生物用量为10 mg/L时,阻垢率可达到90%以上。Polyaspartic acid derivative was synthesised with sulfourea （CSN） and polysuccinimide （PSI）that was the thermal condensation polymer of MA. The reaction condition of PSI and CSN was optimized. The product structure was characterized by FT-IR. And the scale inhibition properties and mechanism of CSN-PASP were studied. The result indicates that the scale inhibition efficiency of CSN-PASP is optimum in CSN with 1.0 g under the condition of 100 ℃and 2.5 h with CSN to ring opening of PSI. FT-IR proves that amide bond was generated through aminos of sulfourea and carboxyls and the new functional groups are increased on the side chain. CSN-PASP with 10 mg/L, the scale inhibition efficiency is up to 90%.

关 键 词：聚天冬氨酸 开环改性 阻垢剂 阻垢性能 

分 类 号：TG174.42[金属学及工艺—金属表面处理]