聚天冬氨酸/L-肌肽接枝共聚物的制备及其阻垢性能  

Synthesis and scale inhibition efficiency of polyaspartic acid/L-carnosine graft copolymer

作　　者：王谦[1] 田玉平[1] 石澍晨 许英[1,2] Wang Qian Tian Yuping Shi Shuchen Xu Ying(College of Chemistry and Chemical Engineering, Henan University, Kaifeng Henan 475004, China Henan Engineering Research Center of Industrial Criculating Water Treatment, Kaifeng Henan 475004, China)

机构地区：[1]河南大学化学化工学院,河南开封475004 [2]河南大学河南省工业冷却水循环利用工程技术研究中心,河南开封475004

出　　处：《石油化工》2017年第1期103-109,共7页Petrochemical Technology

基　　金：河南省科技发展计划资助项目(142107000015)

摘　　要：以顺丁烯二酸酐和尿素为原料合成了聚琥珀酰亚胺(PSI),再以L-肌肽为开环介质在碱性条件下对PSI进行开环反应合成了新型绿色阻垢剂聚天冬氨酸(PASP)/L-肌肽。利用~1H NMR,^(13)C NMR,SEM,XRD等方法分析了PASP/L-肌肽和垢晶体的结构,采用静态阻垢法考察了PASP/L-肌肽的阻Ca CO_3垢和阻Ca_3(PO_4)_2垢性能。实验结果表明,当阻垢剂用量为1.25 mg/L时,PASP/L-肌肽的阻Ca CO_3垢效率可达100%;用量为8 mg/L时,PASP/L-肌肽的阻Ca_3(PO_4)_2垢效率可达90%以上,优于PASP。PASP/L-肌肽对高温和高磷酸根浓度拥有较强的耐受性。加入的PASP/L-肌肽吸附在垢晶体的活性生长位点上导致晶型转变或晶格畸变,从而破坏了垢晶体的正常生长。A novel green scale inhibitor,polyaspartic acid/L-carnosine graft copolymer（PASP/L-carnosine）,was synthesized from maleic anhydride,urea and L-carnosine. The copolymer and treated scale crystals were characterized by means of 1H NMR,13 C NMR,SEM and XRD. The scale inhibition efficiencies of PASP/L-carnosine to Ca CO3 and Ca3（PO4）2 were investigated through static scale inhibition tests. The results showe d that the inhibition efficiency of PASP/L-carnosine to Ca CO3 was close to 100% when its dosage was 1.25 mg/L,and to Ca3（PO4）2 could reach more than 90% when its dosage was 8 mg/L. It was indicated that PASP/L-carnosine could be adsorbed on the surface of the scale crystals and distort the scale crystal lattice.

关 键 词：聚天冬氨酸/L-肌肽接枝共聚物 阻垢剂 顺丁烯二酸酐 尿素 

分 类 号：TQ316.343[化学工程—高聚物工业]