Complexation behavior of poly(acrylic acid) and lanthanide ions

doi:10.1016/j.polymer.2014.01.051

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	Complexation behavior of poly(acrylic acid) and lanthanide ions
	Qi, Xiaocun 1; Wang, Zhiliang 1; Ma, Songmei 1; Wu, Lianjia 1; Yang, Shuguang 1; Xu, Jian 2
刊名	POLYMER
	2014-03-10
卷号	55 期号:5 页码:1183-1189
关键词	Poly(Acrylic Acid) Lanthanides Polymer-metal Complex
ISSN号	0032-3861
DOI	10.1016/j.polymer.2014.01.051
英文摘要	The complexation behavior of PAA and lanthanide (Ln) ions was schematically investigated. As pH increased, the complexation between FAA and Ln ions will greatly strengthen because COO- groups exhibit much stronger interaction with Ln ions than COOH. When the pH values are higher than 2.5, where the ionization of PAA is about 2.0%, the PAA Ln complex would precipitate out from the solution. The precipitation is a direct indicator for the complexation between FAA and Ln ions. Besides pH values, the complex precipitation is related with the concentration, the molar ratio, and the operation procedure. At the extremely low concentration, there is no polymer metal complex precipitation but fluorescence spectroscopy reveals that the complexation between FAA and Ln ions still exists when pH value is higher than 2.5. When the molar ratio of FAA and Ln ions exceeds the certain level, it would produce soluble polymer metal complex, even at the high concentration of Ln ions. (C) 2014 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000332500600014
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/50301]
专题	中国科学院化学研究所
通讯作者	Yang, Shuguang
作者单位	1.Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China 2.Chinese Acad Sci, Inst Chem, Lab Polymer Phys & Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Qi, Xiaocun,Wang, Zhiliang,Ma, Songmei,et al. Complexation behavior of poly(acrylic acid) and lanthanide ions[J]. POLYMER,2014,55(5):1183-1189.
APA	Qi, Xiaocun,Wang, Zhiliang,Ma, Songmei,Wu, Lianjia,Yang, Shuguang,&Xu, Jian.(2014).Complexation behavior of poly(acrylic acid) and lanthanide ions.POLYMER,55(5),1183-1189.
MLA	Qi, Xiaocun,et al."Complexation behavior of poly(acrylic acid) and lanthanide ions".POLYMER 55.5(2014):1183-1189.