Synthesis and scale inhibition of polyasparagusic acid derivatives

doi:10.11894/1005-829x.2011.31.(3).39

Abstract

Abstract:

Polyasparagusic acid derivatives containing different hydroxy ratios have been synthesized. Their scale inhibiting capacities of CaCO₃、CaSO₄ and Ca₃(PO₄)₂ are evaluated, and the structures of those derivatives are characterized.The results show that when the mole ratio of isopropanolamine and polysuccinimide is 2.4, and the agent dosage is 8 mg/L, the scaling inhibition rate on Ca₃(PO₄)₂ is 96.0%. After modification, its scaling inhibition rate on CaCO₃ is improved to a certain extent, but does not have much effect on scaling inhibition capacity of CaSO₄. The presence of hydroxy in polyasparagusic acid molecules is confirmed by NMR.

Key words: polyasparagusic acid, derivatives, scale inhibition

摘要：

合成了含不同羟基比例的聚天冬氨酸衍生物, 通过试验对其阻CaCO₃、CaSO₄和Ca₃(PO₄)₂垢性能进行了评价, 并对该衍生物的结构进行了表征。结果表明:当合成原料n(异丙醇胺)∶n(PSI)为2.4, 合成药剂投加质量浓度为8mg/L时, 其对Ca₃(PO₄)₂的阻垢率可达96.0%。改性后药剂对CaCO₃的阻垢率有一定提高, 但对CaSO₄的阻垢性能影响不大。反应产物的核磁共振谱图验证了聚天冬氨酸分子中羟基的引入。

关键词: 聚天冬氨酸, 衍生物, 阻垢

CLC Number:

TQ085+.4

Qian Tingting, Gao Canzhu. Synthesis and scale inhibition of polyasparagusic acid derivatives[J]. INDUSTRIAL WATER TREATMENT, 2011, 31(3): 39-42.

钱婷婷, 高灿柱. 聚天冬氨酸衍生物的合成及其性能研究[J]. 工业水处理, 2011, 31(3): 39-42.

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