聚天冬氨酸的结构及其阻垢性能研究
收稿日期: 2005-02-23
网络出版日期: 2010-10-01
Studies on the structure of polyaspartic acid and its scale inhibition behavior
Received date: 2005-02-23
Online published: 2010-10-01
杨红健, 王芳, 侯凯湖 . 聚天冬氨酸的结构及其阻垢性能研究[J]. 工业水处理, 2005 , 25(7) : 26 -28 . DOI: 10.11894/1005-829x.2005.25(7).26
The polyaspartic acid(PASP) obtained through two methods: aminization and polymerization of maleic acid(methodⅠ) and thermal polycondensation of L-aspartic acid(methodⅡ) have been determined and compared by using a gel permeation chromatography and infra-red spectrum. The results show that the variety reaction route and conditions alter the average molecular weight(Mw) and its distribution of the products. The results of static state tests of scale inhibition show that the products obtained through methodⅠwith about Mw3 000, can give the same scale inhibition behavior as the products obtained through method Ⅱ with about Mw5 200. The results of SEM examination to scale type of CaCO3 indicate that the addition of polyaspartic acid can lead to aberrant crystal lattice.
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