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Updated: Apr 26, 2026
Facile Protocol for the Synthesis of Self-assembling Polyamine-based Peptide Amphiphiles PPAs and Related Biomaterials
Published on: June 25, 2018
Synthesis and scale inhibitor performance of polyaspartic acid
Zhengyan Liu1, Yonghong Sun2, Xiaohui Zhou2
1Nanjing Guoneng Enviro-protection Project Co., Ltd., Nanjing 210029, China; College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China.
Abstract:
Polyaspartic acid (PASP) has been extensively studied in recent years as a green scale inhibitor. PASP was synthesized by thermal polycondensation of maleic anhydride and ammonium carbonate in this study. The optimal polycondensation reaction conditions were the raw material (maleic anhydride and ammonium carbonate) molar ratio of 1.0:1.2, the polymerization temperature of 180°C and reaction time of 2.0 hr. The results showed that PASP exhibits very good scale inhibiting performance. The inhibition rate was 95% for calcium carbonate and 90% for calcium sulfate by the application of 5 mg/L PASP.
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