Mesostructure of Composite Materials Based on Segmented Poly(Urethane Imide) Containing Ferrite Nanoparticles

The mesostructure of segmented poly(urethane imide) containing 4–10 wt % CoFe 2 O 4 or Al 3 Fe 5 O 12 nanoparticles was experimentally studied by small-angle polarized neutron scattering, which can analyze the nuclear and magnetic subsystems of the obtained composites. The transformation of the doma...

Full description

Saved in:
Bibliographic Details
Published in:Russian journal of inorganic chemistry 2021-02, Vol.66 (2), p.225-236
Main Authors: Runov, V. V., Bugrov, A. N., Smyslov, R. Yu, Kopitsa, G. P., Runova, M. K., Vasil’ev, B. V., Popova, E. N., Kirillova, S. A., Feoktistov, A., Pipich, V.
Format: Article
Language:English
Subjects:
Chemical composition
Chemistry
Chemistry and Materials Science
Cobalt ferrites
Composite materials
Copolymers
Elastomers
Inorganic Chemistry
Molecular chains
Nanoparticles
Neutron scattering
Nuclear scattering
Physical Methods of Investigation
Polymer matrix composites
Subsystems
Temperature dependence
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The mesostructure of segmented poly(urethane imide) containing 4–10 wt % CoFe 2 O 4 or Al 3 Fe 5 O 12 nanoparticles was experimentally studied by small-angle polarized neutron scattering, which can analyze the nuclear and magnetic subsystems of the obtained composites. The transformation of the domain structure of the magnetic elastomers based on poly(urethane imide) was investigated at various concentrations, chemical compositions, and localizations of ferrite nanoparticles in polymer chains. The dynamics of the change in the segmental mobility of soft blocks during heating of samples was characterized by magnetic–nuclear interference scattering. The experiments detected changes in the supramolecular structure of the multiblock copolymer, which depended on the percentage and type of nanoparticles. The correlation radii were determined in the magnetic subsystem of ferrite nanoparticles embedded in hard aromatic blocks of poly(urethane imide) as nodes of intermolecular crosslinkers and chain extenders. The temperature dependence was analyzed for the intensity of small-angle nuclear scattering by poly(urethane imide) and magnetic elastomers based on it, under the conditions of the transition of soft aliphatic segments from the glassy to the highly elastic state.
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023621020170