Novel Biocomposite of Starch and Flax Fiber Modified with Tannic Acid with Biocidal Properties
Magdalena Stepczyńska, Piotr Rytlewski, Krzysztof Moraczewski, Alona Pawłowska, Tomasz Karasiewicz
TL;DR
This paper introduces a new biocomposite made from starch and flax fiber modified with tannic acid, showing improved mechanical strength, hydrophobicity, and biocidal properties.
Contribution
The novelty lies in using tannic acid as both a cross-linker and a biocidal agent in biocomposite development.
Findings
TA modification reduced the hydrophilicity of the biocomposite.
The biocomposite showed enhanced mechanical and thermal properties.
Biocidal activity and faster biodegradation rates were observed.
Abstract
The purpose of this paper was to develop novel biocomposites with biocidal properties in microorganisms, with enhanced mechanical strength and hydrophobicity as well as with increased biodegradation rates. The main idea and the novelty of this work was to use cross-linking compounds and, at the same time, biocidal compounds—natural compounds of plant origin with biocidal properties. The authors assumed that the modification of flax fiber by natural plant compound will reduce the hydrophilicity of novel biocompositie. Biopolymer based on thermoplastic starch reinforced with flax fibres modified with tannic acid (TA) was prepared by extrusion and injection molding processes. The effects of TA modification on the mechanical and structural properties of biocomposites were analyzed through DMA, tensile tests, DSC, and TG. The biocidal and wettability properties of the biocomposites were…
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Taxonomy
TopicsBuilding materials and conservation · Masonry and Concrete Structural Analysis · 3D Surveying and Cultural Heritage