Selection of optimal conditions for obtaining of Co nanoparticles in the matrix of polymeric hydrogels | Zendy

Meiram Burkeyev | Zendy; Yerkebulan Tazhbayev | Zendy; Davrenbekov | Zendy; A.A. Bakibayev | Zendy; Kazhmuratova | Zendy; Т. О. Хамитова | Zendy; Ibrayeva | Zendy; Kozhabekova | Zendy; Tolendi | Zendy; Imanbekova | Zendy

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Selection of optimal conditions for obtaining of Co nanoparticles in the matrix of polymeric hydrogels

Author(s) -

Meiram Burkeyev,

Yerkebulan Tazhbayev,

Davrenbekov,

A.A. Bakibayev,

Kazhmuratova,

Т. О. Хамитова,

Ibrayeva,

Kozhabekova,

Tolendi,

Imanbekova

Publication year - 2017

Publication title -

bulletin of the karaganda university chemistry series

Language(s) - English

Resource type - Journals

eISSN - 2663-4872

pISSN - 2518-718X

DOI - 10.31489/2017ch2/23-29

Subject(s) - sodium hypophosphite , cobalt , nanoparticle , potassium , chemical engineering , matrix (chemical analysis) , chemistry , metal , dispersion (optics) , inorganic chemistry , polymer , flocculation , copolymer , sodium , materials science , organic chemistry , nanotechnology , chromatography , engineering , electroplating , physics , optics , layer (electronics)

Results of the influence of external factors on process of immobilization of metal nanoparticles on copolymers based on unsaturated polyester resins with unsaturated carboxylic acids were considered in the article. The effects of concentration of cobalt chloride solutions and distribution of metal particles by sizes in the matrix were studied. Results showed that increasing of cobalt concentration in solution shifts the equilibrium towards the formation of larger particles, i.e. there is a tendency to flocculation and formation of biand polymodal dispersions. The dependence of the dispersion formed at reduction of metal containing particles on the reducing agent and its concentration were researched. Potassium hypophosphite and sodium tetrahydroborate were used as reducing agents. It was found that upon reduction by sodium tetrahydroborate of cobalt nanoparticles have larger sizes than by using potassium hypophosphite.

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