绿色阻垢剂聚天冬氨酸的优化制备

摘要

Polyaspartic acid(PASP) was prepared by the means of polymerizing maleic anhydride and ammonia solution. In order to find optimal condition of synthesizing PASP, we made a set of experiments on proportion of material, temperature and time of polymerization in the single condition, and compared PASP with other scale inhibitors about the performance of scale inhibition and biodegradation .The results show: the optimal proportion of material is 1∶ 1.1, the temperature of polymerization is 160℃, and the time of polymerization is 1h. Under above condition, we synthetized the PASP its inhibiting efficiency can reach over 95%, and biodegradation rate reaches 70%.%以马来酸酐为原料制备聚天冬氨酸,并对聚合反应的质量配比、聚合温度和聚合时间三个反应条件进行了优化实验,对最优条件下合成的PASP与其它阻垢剂进行了性能对比.结果表明:合成PASP的最佳条件是:原料质量配比为1∶ 1.1,聚合温度为160℃,聚合时间为1 h,阻垢率可以达到95%以上,生物降解性能达到70%.