Composite "Crosslinked Polyvinyl Alcohol-Magnetite" as a Stimuli-Responsive Matrix for Optical Methods

The preparation and application of the composite material "crosslinked polyvinyl alcohol-magnetite" as a sensitive matrix for use in digital colorimetry and optical micrometry methods are discussed. The material was synthesized in the form of spherical granules (for micrometry) and thin fi...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2024-06, Vol.29 (12), p.2794
Main Authors: Shchemelev, Ivan S, Ivanov, Alexander V, Ferapontov, Nikolay B
Format: Article
Language:English
Subjects:
Ammonia
Analysis
Carbohydrates
Chromatography
Composite materials
composite stimuli-responsive (sensitive) materials
Dextrose
digital color measurement
Fructose
Glucose
Liquor
Magnetite
Metal oxides
Methods
Nanostructured materials
optical micrometry
Polymers
Polyvinyl alcohol
Sensors
Sorbents
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Summary:The preparation and application of the composite material "crosslinked polyvinyl alcohol-magnetite" as a sensitive matrix for use in digital colorimetry and optical micrometry methods are discussed. The material was synthesized in the form of spherical granules (for micrometry) and thin films (for digital colorimetry). The obtained composites were characterized by the registration of magnetization curves. It was shown that the amount of grown Fe O particles in the polymer gel is in linear dependence with the iron salt concentrations in the impregnating solutions. The composite granules were applied to determining monosaccharides using optical micrometry. The optimal pH value for the total amount of monosaccharides' determination was 8.6. The study of the analytical response of composite granules and films performed with a low limit of detection (7.9 mmol/dm ) of both glucose and fructose and a possibility of the control of high alcohol contention in water media. The granules were used to determine the total carbohydrate content in samples of natural honey and syrups with high fructose contents, while the films were used to control the alcohol content in hand antiseptics. The results obtained are in good agreement with the data provided by the manufacturers.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules29122794