Têxteis biofuncionais para aplicação dermocosmética

Abstract

Textile finishes has long been used to provide new functional characteristics to fabrics. These functionalizations can be applied to substrates in different ways. However, one of the most widely used forms of application is through microcapsules, which provide protection for the encapsulated active ingredients against possible adversities. These microcapsules are used in various areas, such as textiles, pharmaceuticals and cosmetics. In the textile industry, they can be used to develop biofunctional textiles, which serve as a transport vehicle for the encapsulated actives to come into contact with the skin and perform new functions such as cosmetic or medicinal. In this project, these biofunctional textiles were used to produce new products classified as dermocosmetics, with the function of penetrating deeper into the skin and providing a prolonged effect on its appearance. In this way, the present work developed a finish using microcapsules of lemongrass essential oil and salicylic acid, which were produced via in situ polymerization. These microcapsules were characterized by scanning electron microscopy (SEM) techniques, which showed microcapsules with irregular morphology and good conformity, estimation of particle diameter by dynamic light scattering (DLS) which found an average diameter of 1.95 µm, Fourier transform infrared spectroscopy (FTIR), percentage of oil loading in the microcapsule, which found that 67.90±1.41 % of lemongrass oil was present in the core of the microcapsule, thermogravimetric analysis (TGA) and the detection of free formaldehyde, which confirmed that this work was able to meet the standard released by ANVISA. These microcapsules were applied to a 100% cotton flat fabric using the pad-dry technique and the functionalization was evaluated using scanning electron microscopy (SEM) and thermogravimetric analysis (TGA), both of which confirmed the presence of the microcapsules in the fabrics. Therefore, this work has shown that microcapsules obtained via in situ polymerization can be used for dermo-cosmetic applications and functionalization of textile substrates, demonstrating that this is a promising area for the development of new research and cosmetic/dermo-cosmetic products, and is a market that allows for innovation and exploration.