Potentiometric and thermodynamic studies of vinylacetic acid and its metal complexes in monomeric and polymeric forms

被引:0
|
作者
Al-Sarawy, AA [1 ]
机构
[1] Mansoura Univ, Fac Engn, Dept Math & Phys Sci, Mansoura, Egypt
关键词
thermodynamics; dissociation; stabilization; metal-polymer complexes; hydrophilicity;
D O I
10.1002/app.21337
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Proton-monomeric ligand dissociation and metal-monomeric ligand stability constants of vinylacetic acid (VA) with some metal ions were calculated potentiometrically in 0.1KCI. Also, in the presence of 2,2'-azobisisobutyronitrile as initiator, the proton-polymeric ligand dissociation and metal-polymeric ligand stability constants were calculated. The effect of temperature on the dissociation of VA and the stability of its formed complexes were studied in monomeric and polymeric forms. The corre-sponding thermodynamic functions were derived and discussed. The dissociation process was nonspontaneous, endothermic, and entropically unfavorable. The formation of the metal complexes was found to be spontaneous, endothermic, and entropically favorable. (c) 2005 Wiley Periodicals, Inc.
引用
收藏
页码:952 / 956
页数:5
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