Effect of Composition on the Physicochemical Properties of Cross-Linked Poly(sodium acrylate)/Sodium Silicate Hydrogels

The paper presents the results of research on the influence of the components of composition on the physicochemical properties of cross-linked poly(sodium acrylate)/sodium silicate hydrogels. The results of the rheological measurements showed that an increasing share of polyacrylate in the sample ca...

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Bibliographic Details
Published in:Materials 2023-11, Vol.16 (23), p.7422
Main Authors: Mastalska-Popławska, Joanna, Wójcik, Łukasz, Izak, Piotr, Konaszewski, Damian
Format: Article
Language:English
Subjects:
Acids
Acrylic resins
Aluminum
Composition effects
Crosslinking
Fireproofing agents
Flame retardants
Homogeneity
Hydrogels
Mechanical properties
Molecular weight
Optical properties
Phosphates
Polymerization
Polymers
Potassium
Rheological properties
Silica
Sodium
Sodium silicates
Temperature
Thermal decomposition
Thermal properties
Thermodynamic properties
Ultraviolet radiation
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Summary:The paper presents the results of research on the influence of the components of composition on the physicochemical properties of cross-linked poly(sodium acrylate)/sodium silicate hydrogels. The results of the rheological measurements showed that an increasing share of polyacrylate in the sample causes a shift of the cross-over point towards longer times and improves mechanical properties. In turn, increasing the share of sodium silicate has a positive effect on extending the fire insulation time (I). TG/DSC analysis indicated that if the sample contained more than 50 wt.% of polymer, the thermal decomposition was a three-stage process, while if the sample contained more water glass, the decomposition was two stage. UV-Vis measurements and SEM analysis confirmed, inter alia, that increasing the share of polyacrylate causes improvement of the optical parameters and homogeneity of the tested hydrogels. The presented results suggest that by controlling the share of the main components of the silicate-polymer hydrogels, it is possible to control their mechanical, optical and thermal properties. Multiplication of the layers or increasing their thickness improves their fire-retardant properties.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma16237422