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New Polymers with Redox Properties

#K-604


Development of Thermostable, Chemical and Radiation Steady Polymers Containing Ionic and Redoxactive Groups

Tech Area / Field

  • CHE-POL/Polymer Chemistry/Chemistry
  • CHE-RAD/Photo and Radiation Chemistry/Chemistry

Status
8 Project completed

Registration date
05.10.2000

Completion date
12.02.2007

Senior Project Manager
Bunyatov K S

Leading Institute
Institute of Chemical Sciences, Kazakstan, Almaty

Supporting institutes

  • National Biotechnology Center of Kazakstan / Scientific Research Agricultural Institute, Kazakstan, Gvardeiski

Collaborators

  • Agency for Industrial Science and Technology / Materials and Chemical Process Department, Japan, Tsukuba

Project summary

The purpose of the given project – development of new ion-exchange, complex-forming and redox- active polymeric materials, the application of which can supply large efficiency of appropriate technological processes and will increase ecological safety of a series of industrial objects.

The approach, offered by us, is based on the use for synthesis of such sorbents reactive and available monomers, containing in the structure simultaneously some reaction centers (vinyl or nitrile groups, ionic groups of acidic, basic or amphoteric type, redoxgroups), mobile atoms of hydrogen of an aromatic nitriles, derivatives of vinyl ether of monoethylamine, allylamine etc. There will be studied the effect of the chain of the nature of functional groups upon the reactivity and the main characteristics of new compounds. Finally, this will yield a possibility to obtain monomers, which possess potentially the required properties. Advantage of such a direction in the search of new polymer materials, containing functional groups of different type, is demonstrated both in the works of foreign and domestic authors, and in the studies of the workers of the laboratory of ion – exchange resins.

The formed polymers are characterized by selectivity increased thermo-, chemo- and radiation stability. Alongside with ionic oxidation-reduction properties such high molecular compounds have paramagnetism, photoconductivity, high chemical activity. All this extends areas of practical use of these materials and thus it will allow one to pay back costs of their production.

Within the framework of the offered project it is supposed to conduct complex research of ion-exchange, complex-forming, oxidation- reduction and catalytic properties of polymers on the basis of nitrogen, oxygen and phosphorus containing monomers with ionic and redox-active groups. Reactivity of the synthesized sorbents will be studied in the processes of sorption and extraction of ions of precious and heavy metals, purification of the industrial solutions from undesirable admixtures or biological liquids from toxic or pathogenic compounds etc. There will be evaluated an oxidation (reduction) ability and catalytic activity of the obtained polymers in different reactions of fine organic synthesis. On this basis there will be issued recommendations for the practical use of the most promising ion – exchange resins with redox – active groups.

The expected result of the study is the determination of promising ion – exchange sorbents, which possess high efficiency of action in different spheres of science and technics.

The research program offered by us, consists of three stages, the fulfillment of each possessing its own scientific and practical value.

The first stage lies in the development of one-step methods of synthesis of new non-limitted monomers on the basis of nitrogen-, phosphorus-, and oxygen- containing compounds of different type, the study of physico-chemical, oxidation-reduction and ion-exchange characteristics, as well as sorption properties, including sorption of organic and inorganic substances from different media. As a result there will be determined and produced the most highly reactive monomers.

The second stage lies in the involvement of the most promising monomers into the processes of polymer formation. As a result there will be selected and produced polymers, which possess a complex of such valuable properties as selectivity and high oxidation- reduction activity alongside with high thermo-, chemo-, and radiation resistance.

The third stage lies in the evaluation of the possibility of usage of the selected substances as oxidizers (reducers), oxidation catalysts in the fine organic synthesis.

– experimental data describing sorption and oxidation-reduction ability and a peculiarities of the processes mechanisms, occurring at the boundary polymer / substratum and immediately in a polymeric system in reactions of sorption separation of mixtures of inorganic ions, radioactive isotopes, organic substances (including that of biological solutions);

– the scientific data concerning developments of effective ways of obtaining of the most perspective samples and for the evaluation of a capability of their commercial production and uses.

The employees of the ICHS have wide experience in development of methods of synthesis and research of synthetic polymeric materials having simultaneously ion exchange, complex-forming and oxidation-reduction properties, in contrast to the majority of ion exchange materials known in industrial practice. In STC for many years the scientists studied domestic and foreign compounds of organic and inorganic origin for the utilization of radioactive wastes, creation of wasteless technologies on the basis of the obtained developments.


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