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中国塑料 ›› 2021, Vol. 35 ›› Issue (11): 55-63.DOI: 10.19491/j.issn.1001-9278.2021.11.009
李美兰1,2(), 何娇1, 龚伟1,2(
), 贺肖妮1, 来倩1, 刘白玲2
收稿日期:
2021-04-30
出版日期:
2021-11-26
发布日期:
2021-11-23
作者简介:
李美兰(1988-),女,讲师,主要从事水处理与功能材料的研究,基金资助:
LI Meilan1,2(), HE Jiao1, GONG Wei1,2(
), HE Xiaoni1, LAI Qian1, LIU Bailing2
Received:
2021-04-30
Online:
2021-11-26
Published:
2021-11-23
Contact:
GONG Wei
E-mail:liecho2009@163.com;gongwei?com@163.com
摘要:
采用酯化反应,以衣康酸、三乙醇胺及琥珀酸为反应单体,构建出了一种可用于工业循环用水阻垢分散的无磷型绿色端羧基超支化聚酯,通过静态阻垢实验探讨了无磷型绿色端羧基超支化聚酯在不同影响因素下的阻垢分散能力,同时测定了该阻垢剂的生物降解性能及对水体的生态效应。结果表明,无磷型绿色端羧基超支化聚酯对氧化铁具有优异的分散效果,并且在较高温度及较宽pH范围内对CaCO3和CaSO4均具有良好的阻垢分散性能,当阻垢剂用量为20 mg·L-1和12 mg·L-1时,其对CaCO3和CaSO4的阻垢率分别达到了93.8 %和96.2 %;无磷型绿色端羧基超支化聚酯用于钙垢阻垢时,不仅能破坏钙垢晶体的规整性,而且还能降低钙垢的结晶度,从而有效抑制钙垢的生长,实现阻垢分散的目的;该阻垢剂具有良好的生物降解性,在第28 d时,其生物降解率可达67.2 %,且基本不影响水体中微生物的生长。
中图分类号:
李美兰, 何娇, 龚伟, 贺肖妮, 来倩, 刘白玲. 无磷型绿色端羧基超支化聚酯的制备及其阻垢行为研究[J]. 中国塑料, 2021, 35(11): 55-63.
LI Meilan, HE Jiao, GONG Wei, HE Xiaoni, LAI Qian, LIU Bailing. Construction and Scale Inhibition Behavior of Phosphorus⁃free Green Carboxyl⁃terminated Hyperbranched Polyester[J]. China Plastics, 2021, 35(11): 55-63.
项目 | 透光率/% | Zeta电位/mV |
---|---|---|
H2O | 94.2 | -5.2 |
衣康酸 | 67.1 | -13.4 |
无磷型绿色端羧基超支化聚酯 | 29.6 | -24.7 |
项目 | 透光率/% | Zeta电位/mV |
---|---|---|
H2O | 94.2 | -5.2 |
衣康酸 | 67.1 | -13.4 |
无磷型绿色端羧基超支化聚酯 | 29.6 | -24.7 |
项目 | 细菌/个·g-1 | 放线菌/个·g-1 | 真菌/个·g-1 |
---|---|---|---|
对照组 | 9.13×107 | 4.71×103 | 5.03×105 |
端羧基超支化阻垢剂 | 9.81×107 | 3.96×103 | 5.27×105 |
项目 | 细菌/个·g-1 | 放线菌/个·g-1 | 真菌/个·g-1 |
---|---|---|---|
对照组 | 9.13×107 | 4.71×103 | 5.03×105 |
端羧基超支化阻垢剂 | 9.81×107 | 3.96×103 | 5.27×105 |
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