Composition and Structure of Spatial Polychromoorganylsiloxanes

The interaction of polyvinylsilsesquioxane (PVS) and polyvinyl,-polydimethylsiloxane with tris (3-chlorosulfenyl-2,4-pentanedionate) chromium was investigated. During the reaction, gels were obtained, after drying of which dark purple substances were isolated. The composition and structure of these...

Full description

Saved in:
Bibliographic Details
Published in:SILICON 2024-04, Vol.16 (6), p.2509-2520
Main Authors: Pervakov, K. A., Shapkin, N. P., Razov, V. I., Fedorets, A. N.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Chloride
Chromium
Coherent scattering
Composition
Environmental Chemistry
Fourier transforms
Gels
Inorganic Chemistry
Lasers
Materials Science
Optical Devices
Optics
Photonics
Polydimethylsiloxane
Polymer Sciences
Polymers
Positron annihilation
Positronium
Thermogravimetry
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 interaction of polyvinylsilsesquioxane (PVS) and polyvinyl,-polydimethylsiloxane with tris (3-chlorosulfenyl-2,4-pentanedionate) chromium was investigated. During the reaction, gels were obtained, after drying of which dark purple substances were isolated. The composition and structure of these substances were studied for the first time using thermogravimetry, diffractometry and positron annihilation spectroscopy (PAS). The densities of metallochelate polymers were found pycnometrically, and according to diffractometry data, it was revealed that the connection products are spatial reticular mesomorphic polymers with a fractal structure. Using the PAS data, it was concluded that there is a direct correlation between the volume of the positronium trap and the coherent scattering region (CSR) determined using X-ray diffraction. Based on the regular decrease in the interplane distance when introducing a chromium atom into the silsesquioxane chain, it was found that the synthesized polymetallorganosiloxanes have a different structure in comparison with typical representatives of this class of compounds. For a product with polyvinylsiloxane, enlarged SEM images were obtained and the morphology of the initially formed gel and dried solid powder was described.
ISSN:1876-990X
1876-9918
DOI:10.1007/s12633-024-02861-9