聚(柠檬酸-天冬氨酸)的合成及其阻垢缓蚀性能
Synthesis of Aspartic Acid/citric Acid Copolymer and Its Anti-scaling and Inhibition Performance
摘 要
采用热缩聚法制备了聚（柠檬酸-天冬氨酸），并用红外光谱和凝胶色谱对其进行了表征。采用静态阻垢法研究了不同条件下制备的聚（柠檬酸-天冬氨酸）对硫酸钙的阻垢性能。采用电化学方法研究了在3.5%（质量分数）氯化钠溶液中聚（柠檬酸-天冬氨酸）对铜的缓蚀性能。结果表明：当天冬氨酸与柠檬酸物质的量之比为1：1时，制备的聚（柠檬酸-天冬氨酸）（产物C）对硫酸钙的阻垢性能最好，阻垢率达97%，其在3.5%氯化钠溶液中对铜的缓蚀效果也很好。当产物C质量浓度为200 mg/L时，对铜的缓蚀率可达81.6%。即制备的聚（柠檬酸-天冬氨酸）具有良好的阻垢缓蚀性能。
阻垢
缓蚀
硫酸钙
铜
poly (citric acid/aspartic acid)
scale inhibition
corrosion inhibition
calcium sulfate
copper
Abstract
Poly (citric acid/aspartic acid), P(CA/ASP) was prepared by thermal polycondensation method. The synthesized copolymer P(CA/ASP) was characterized by FT-IR spectra and size exclusion chromatography (SEC). The scale inhibition performance of P(CA/ASP) against CaSO4 was evaluated by static scale inhibition method, and the inhibition ratio of P(CA/ASP) was studied by electrochemical method. The results show that the molar ratio of reaction reagents (citric acid and aspartic acid) was 1:1 (product C), the scale inhibition rate against CaSO4 was up to 97%. The inhibition performunce of product C is good. When the concentration of product C in 3.5% sodium chloride solution was 200 mg/L, the corrosion inhibition rate for copper could reach 81.6%. P(CA/ASP) has excellent scale inhibition performance against CaSO4 and corrosion inhibition performance for copper.
中图分类号 TG174.4 DOI 10.11973/fsyfh-201709011
所属栏目 应用技术
基金项目 上海市科学技术委员会课题（14DZ2261000）
收稿日期 2016/1/28
修改稿日期
网络出版日期
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引用该论文: JIA Lingling,ZHAO Yuzeng,LIU Kuaiying,GE Honghua. Synthesis of Aspartic Acid/citric Acid Copolymer and Its Anti-scaling and Inhibition Performance[J]. Corrosion & Protection, 2017, 38(9): 710
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【4】GAUTHIER G,CHAO Y J,HORNER O,et al. Application of the fast controlled precipitation method to assess the scale-forming ability of raw river waters[J]. Desalination,2012,299:89-95.
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【6】张国超,林冠发,雷丹,等. 超级13Cr不锈钢的临界点蚀温度[J]. 腐蚀与防护,2012,33(9):777-779.
【7】LIU D,DONG W B,LI F T,et al. Comparative performance of polyepoxysuccinic acid and polyaspartic acid on scaling inhibition by static and rapid controlled precipitation methods[J]. Desalination,2012,304:1-10.
【8】LIU F,LU X H,YANG W,et al. Optimizations of inhibitors compounding and applied conditions in simulated circulating cooling water system[J]. Desalination,2013,313:18-27.
【9】KAVITHA A L,VASUDEVAN T,PRABU H G. Evaluation of synthesized antiscalants for cooling water system application[J]. Desalination,2011,268:38-45.
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