The cobalt and nickel-containing polyethylene prepared by using metal-vapor synthesising

Pribytkov, P.V.; Vasil'kov, A.Y.; Naumkin, A.V.

Авторы: Pribytkov P.V., Vasil'kov A.Yu, Naumkin A.V.
Журнал: IOP Conference Series: Materials Science and Engineering
Том: 848
Год издания: 2020
Издательство: -
Местоположение издательства: Krakow
Первая страница: 012074-1
Последняя страница: 012074-10
DOI: 10.1088/1757-899X/848/1/012074
Аннотация: Cobalt and nickel-containing low-pressure polyethylene samples (HDPE) wereprepared by metal-vapor synthesis (MVS) of unstable bisarene complexes of Ni and Co type(C6H5CH3)2M and their further decomposition at a temperature of 178 K in the volume ofHDPE. The Faraday method shows that Ni and Co nanometer particles are stabilized by thepolyethylene matrix up to T=370 K. When the Ni-HDPE material is heated above 420 K,irreversible processes of interaction of Ni clusters with the polyethylene matrix occur with theformation of a less magnetic phase. When the Co-HDPE material is heated above 420 K, Coclusters coalesce to form a more magnetic phase. At temperatures above 520 K, themagnetization of the Co/HDPE system begins to increase rapidly and approaches the valuecharacteristic of massive cobalt. Changing the conditions of cryosynthesis significantlyinfluences the properties of the resulting products. The sample of 2.5% Co-HDPE obtained at atemperature of 185 K is characterized by weak magnetic properties. Its magnetization at roomtemperature is lower than that of the samples with a similar metal content by 30-40 times. TheXPS shows that nickel atoms are in the form of Ni(OH)2.
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