Abstract
The study evaluates five types of commercial textiles with different cotton and polyester contents widely used in the garment industry. These textile samples have been subjected to treatment by the exhaustion method using zinc oxide nanoparticles (NP ZnO) (textile functionalization) with the aim of improving their efficiency in blocking UV radiation. The ZnO nanoparticles have been obtained by two methods: The green or also called biosynthesis (using the extract of Coriandrum sativum as an organic reducing agent), and the chemical method (using NaOH as an inorganic reducing agent). The results related to the green method show having achieved a defined geometric configuration with an average size of 97.77 nm (SD: 9.53). On the contrary, the nanostructures obtained by the chemical method show pentagonal configurations with average sizes of 113 nm (SD: 6.72). The textiles functionalized with NP ZnO obtained by biosynthesis showed a better efficiency in blocking ultraviolet radiation (UV).
Highlights
In recent decades, nanotechnology has deepened the level of research, in such a way that it has come to control various properties that atoms and molecules possess, even handling individual atoms with high precision, generating functional materials and devices on the nanometric scale
The use of a vegetable with the aim of obtaining an extract rich in metabolites that play a role as a chemical agent reducer, is considered a challenge because, from the phytochemical and metabolomic point of view, it involves evaluating a series of agents that generate a chemical reaction and aim to obtain nanostructures with new properties and phenomena that are governed by some physical laws
The mechanisms of reducing conventional chemical synthesis are defined using chemical agents such as ascorbates, sodium citrate, sodium borohydride, among others, whose mechanism allows us to have a rigorous consodium citrate, sodium borohydride, among others, whose mechanism allows us to have a trol of the size and shape of the NP zinc oxide (ZnO), generating chemical processes of nucleation and rigorous control of the size and shape of the NP ZnO, generating chemical processes of growth
Summary
Nanotechnology has deepened the level of research, in such a way that it has come to control various properties that atoms and molecules possess, even handling individual atoms with high precision, generating functional materials and devices on the nanometric scale. The properties of nanomaterials are of research interest to scientists and researchers related to the textile industry, which has led to the use of nanotechnology being studied with greater emphasis because textiles are considered one of the best areas to apply nanotechnology In this sense, it is known that fibers provide optimal substrates based on the type of thread (material) or grammage. Zinc and titanium oxides have zero toxicity and are chemically stable when subjected to high temperatures, in addition to having photocatalytic characteristics due to their degree of oxidation This type of nanomaterial has an excellent surface-volume ratio as a result of a significant increase in the effectiveness of catalytic processes (due to their oxidation) compared to bulk materials [10]
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