Interphase Mobility and Migration of Hydrophobic Organic Metal Extractant Molecules in Solvent Impregnated Resins.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F02%3A27020262" target="_blank" >RIV/67985858:_____/02:27020262 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Interphase Mobility and Migration of Hydrophobic Organic Metal Extractant Molecules in Solvent Impregnated Resins.

Original language description

Solvent-impregnated resins (SIRs) were made from polyvinyl pyridine and polyvinyl benzyl ammonium types of ionic polymers by impregnation of thiophosphoric acid type extractants. Morphological and nuclear magnetic resonance (NMR) studies were performed to observe the physical migration of the extractants under variation of two chemical factors: acidity and metal concentration. Morphological (surface area) measurements of the SIR-type polymer reveal surface area and pore-volume reduction upon metal-ion complexation and/or decreasing pH value. NMR measurements clearly show state variations of the extractant from a 'solid' type state in the gel phase into a 'liquid' state in the macropore phase. This phenomenon of migration of water-immiscible organic acids in response to pH changes of the external aqueous phase in SIRs, resembles a 'smart' polymer in which large and sharp physical changes occur in response to a chemical stimulous. The discovery of the migration phenomena leads to a new u

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CI - Industrial chemistry and chemical engineering

OECD FORD branch

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Project

<a href="/en/project/GA104%2F96%2F0582" target="_blank" >GA104/96/0582: Heterogenized selective ligands for separation of heavy metals</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2002

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Separation Science and Technology

ISSN

0149-6395

e-ISSN

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Volume of the periodical

37

Issue of the periodical within the volume

11

Country of publishing house

US - UNITED STATES

Number of pages

16

Pages from-to

2607-2622

UT code for WoS article

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EID of the result in the Scopus database

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