聚天冬氨酸及其衍生物的缓蚀性能和生物降解性能  

Performance of Polyaspartic Acid and its Derivatives

作　　者：王大勇[1] 陈武[1] 梅平[1] 赖璐[1] 

机构地区：[1]长江大学化学与环境工程学院,荆州430023

出　　处：《腐蚀与防护》2012年第6期470-473,共4页Corrosion & Protection

基　　金：湖北省高等学校优秀中青年科技创新团队项目(T201003);长江大学研究项目(JY2010021)

摘　　要：在聚琥珀酰亚胺的基础上分别合成了含单羟基、双羟基、羧基、磺酸基四种基团的聚天冬氨酸(PASP)衍生物,采用静态失重法和电化学腐蚀法对其缓蚀性能进行了研究。试验结果表明,这几种聚天冬氨酸衍生物都是以抑制阳极为主的缓蚀剂,其中接枝双羟基的衍生物(DHPAP)的缓蚀效果最好,当加药量为100mg.L-1时缓蚀率达到92.8%,比聚天冬氨酸提高了50%以上。PASP、PASP-ASP(含羧基)在20天内的生物降解率在60%以上,具有优良的生物降解性,而PASP-SEA(含磺酸基)、HPAP(含单羟基)、DHPAP(含双羟基)属于可生物降解物质。On the basis of polysuccinimide,four kinds of polyaspartic acid（PASP） derivatives respectively containing functional groups of single and double hydroxyl,carboxyl,sulfonic were synthesized.The methods of static weight-loss and electrochemical corrosion were employed to study the corrosion performance.The results show that those polyaspartic acid derivatives are anodic inhibitors,and grafted di-hydroxyl derivative has the best effect of corrosion inhibition,and the ratio of corrosion inhibition reached 92.8 % when the dosage was 100 mg·L-1,increased 50% more than polyaspartic acid.The order of inhibition efficiency to A3 steel of these five kinds of polyaspartic acid and its derivatives is PASP〈PASP-SEA〈PASP-ASP〈HPAP〈DHPAP.The biodegradation rates can reach up to 60% in 20 days.PASP-SEA,HPAP and DHPAP belong to biodegradable substance.

关 键 词：缓蚀剂 聚天冬氨酸 衍生物 缓蚀性能 生物降解 

分 类 号：TG174.4[金属学及工艺—金属表面处理] TQ085[金属学及工艺—金属学]