Study of the synthesis and scale inhibition of polyaspartic acid

Expand
  • 1. Department of Chemistry, Tongji University, Shanghai 200092, China;
    2. School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China

Received date: 2003-05-28

  Online published: 2010-10-01

Abstract

Polyaspartic acid is synthesized by three methods,the thermal pol ycondensation of L-aspartic acid,acid-catalyzed polycondensation of L-aspar tic acid and polycondensation of maleic acid with ammonia.The molecular weight of PASP synthesized by these methods is 2 500, 5 000 and 1 800 respectively.The scale inhibition properties of the above PASP products are studied.The results show that all the three kinds of PASP have a good scale inhibition effect on CaCO3, CaSO4 and BaSO4.It also indicates that the product with lower molecular we ight of 1 800 has a comparably inferior scale inhibition on CaCO3 and BaSO4 than CaSO4

Cite this article

Zhu Zhiliang, Liang Xiaoming, Gao Junying, Zhang Ronghua Li Fengting . Study of the synthesis and scale inhibition of polyaspartic acid[J]. Industrial Water Treatment, 2004 , 24(4) : 30 -32 . DOI: 10.11894/1005-829x.2004.24(4).30

References

[1] Ross Robert J,Low K C.Biodegradable alternative to polyacrylate based scale inhibitor and dispersants [C].56th Annual Meeting International Water Conference,Pittsburgh,1995.140- 145
[2] Ross Robert J,Low K C,Shannon James E.Poly-aspartate scale inhibitors biodegradable alternatives to polyacrylate [J].Materials Performance,1997,36(2):52-57
[3] Koweton S,Huang J,Swift G.Polyaspartic acid:Synthesis,biodegradation and current application [J].Environ.Polym.Degrad.,1997,5(3):175-181
[4] Sikes C S,Weeler A P.Inhibition of inorganic or biological CaCO3deposition by polyamino acid derivatives[P].US 4534 881,1985
[5] Nakato T.Relationship between structure and properties of polyaspartic acids[J].Macromolecules,1998,31(7):2107-2113
[6] Wolk S K.One and two dimensional nuclear resonance characterization of polyaspartic acid prepared by thermal polymerization of Laspartic acid[J].Macromolecules,1994,27(26):7 613-7 620
[7] 靳晓霞.绿色环保型水处理剂聚天冬氨酸的国内外发展现状[J].工业水处理,2000,20(增):14-16
[8] 霍宇凝,刘珊,陆柱.聚天冬氨酸对碳酸钙阻垢性能的研究[J].水处理技术,2001,27(1):26-28
[9] 高利军,王宗廷,卓润生.绿色水处理剂聚天冬氨酸的研究进展[J].工业水处理,2002,22(12):9-12
[10] 熊蓉春,董雪玲,魏刚.绿色生物高分子聚天冬氨酸的合成及其阻垢性能研究[J].工业水处理,2001,21(1):17-20

Outlines

/