Published June 1991
| Version v1
Journal article
Study of Ag+/PAA (polyacrylic acid) and Ag0/PAA aqueous system at equilibrium
Description
When submitted to gamma radiation the system Ag+-PAA-water leads to clusters Ag0n/PAA (3 < n < 8) the UV spectrum of which at λ < 380 nm is accompanied by a visible band depending on the PAA ligand (λ > 420 nm) interacting with the clusters. Potentiometric measurements carried out on Ag+ solutions in the presence of PAA at various pH show that the deprotonated form (polyacrylate anion) is strongly bonded to Ag+, on the opposite of the protonated form of PAA. One of the oligomer clusters can be stabilized for more than one year. Studying it by infra-red spectrometry reveals important modifications in the vibration bands of the COO- group circa 1400 and 1600 cm-1 according to the bonding of PAA with Ag+ or Ag0
Abstract (French)
Le systeme Ag+-APA en milieu aqueux donne naissance sous irradiation gamma a des clusters Ag0n/APA (3 < n < 8) dont le spectre d'absorption UV (λ < 380 nm) est accompagne d'une bande visible caracteristique du ligand APA (λ > 420 nm) en interaction avec les clusters. Une etude potentiometrique menee sur des solutions de Ag+ en presence d'APA a differents pH montre que la forme deprotonee (polyacrylate) est fortement liee a Ag+, ce qui n'est pas le cas de la forme protonee de APA. L'un des clusters oligomeres peut etre stabilise au moins un an. Son etude par spectrometrie infra-rouge revele des variations importantes dans les bandes de vibration du groupe COO- vers 1400 et 1600 cm-1 selon que le polyacrylate est lie a Ag+ ou a Ag0Additional details
Additional titles
- Original title (French)
- Etude des systemes aqueux Ag
Publishing Information
- Journal Title
- Journal de Chimie Physique et de Physico-Chimie Biologique
- Journal Volume
- 88
- Journal Issue
- 6
- Series
- J. Chim. Phys. Phys.-Chim. Biol.
- Journal Page Range
- 855-863
- ISSN
- 0021-7689
- CODEN
- JCPBA
Conference
- Title
- 5. Meeting on Radiation Chemistry.
- Original Conference Title
- 5. Journees d'Etudes sur la Chimie sous Rayonnement
- Dates
- 1-6 Jul 1990.
- Place
- Sherbrooke, PQ (Canada).
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 23033957
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- AQUEOUS SOLUTIONS; CHEMICAL RADIATION EFFECTS; GAMMA RADIATION; INFRARED SPECTRA; LIGANDS; PH VALUE; POLYVINYLS; POTENTIOMETRY; REDUCTION; SILVER COMPLEXES; SILVER COMPOUNDS; SOLID CLUSTERS; ULTRAVIOLET SPECTRA; VISIBLE SPECTRA
- Descriptors DEC
- CHEMICAL REACTIONS; COMPLEXES; DISPERSIONS; ELECTROMAGNETIC RADIATION; HOMOGENEOUS MIXTURES; IONIZING RADIATIONS; MIXTURES; ORGANIC COMPOUNDS; ORGANIC POLYMERS; POLYMERS; RADIATION EFFECTS; RADIATIONS; SOLUTIONS; SPECTRA; TITRATION; TRANSITION ELEMENT COMPLEXES; TRANSITION ELEMENT COMPOUNDS