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Titolo:
STRUCTURAL INVESTIGATION OF IRON(III) AND COPPER(II) COMPLEXES WITH POLY(VINYL ALCOHOL) BY NMR TECHNIQUES
Autore:
MORI Y; YOKOI H; FUJISE Y;
Indirizzi:
SHIZUOKA UNIV,FAC ENGN,DEPT APPL CHEM,3-5-1 JOHOKU HAMAMATSU SHIZUOKA432 JAPAN SHIZUOKA UNIV,FAC ENGN,DEPT APPL CHEM HAMAMATSU SHIZUOKA 432 JAPAN HAMAMATSU UNIV,SCH MED,DEPT CHEM HAMAMATSU SHIZUOKA 43131 JAPAN
Titolo Testata:
Polymer Journal
fascicolo: 3, volume: 27, anno: 1995,
pagine: 271 - 279
SICI:
0032-3896(1995)27:3<271:SIOIAC>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
DISPERSIONS;
Keywords:
POLY(VINYL ALCOHOL); DEGREE OF POLYMERIZATION; IRON(III) COMPLEX; COPPER(II) COMPLEX; METAL HYDROXIDE-LIKE CLUSTER; H-1 NMR SIGNAL INTENSITY; NMR RELAXATION RATE; HYDROPHOBIC INTERACTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
37
Recensione:
Indirizzi per estratti:
Citazione:
Y. Mori et al., "STRUCTURAL INVESTIGATION OF IRON(III) AND COPPER(II) COMPLEXES WITH POLY(VINYL ALCOHOL) BY NMR TECHNIQUES", Polymer Journal, 27(3), 1995, pp. 271-279

Abstract

Structures of the iron(III) and copper(II) complexes with poly(vinyl alcohol) (PVA) have been investigated in full detail by NMR techniques, especially through analysis of nuclear magnetic relaxation processesdue to paramagnetic metal ions. As a result, it appears well established that the complexes are of a kind in which iron(III) or copper(II) hydroxide-like clusters are included by PVA chains with hydrophobic backbones toward the inside clusters and with hydrophilic OH groups toward the outside bulk water, meaning that the interaction between the clusters and PVA is of a hydrophobic type. By such an interaction, the complexes have certain definite structures, because there is always a linear relationship between the H-1 NMR signal intensity of PVA and theconcentration of metal ion in every system of complex formation. In the case of the PVA of not less than 250 in the degree of polymerization, however, there has also appeared another linear relationship with amore gentle slope over a relatively high concentration range of iron(III), suggesting that such PVA molecules can form both complexes containing only one and two or more clusters.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 16:39:13