Síntese de HKUST-1 em tecido de algodão e análise da alteração das propriedades mecânicas e químicas

Abstract

The purpose of textile finishing is to alter or add properties to the article. Finishing with nanomaterials, although presenting excellent results in functionalizations, has some limitations regarding the chemical interactions between the finish and the textile substrate. These limitations are seen mainly in the low durability of these finishes. Metal organic frameworks (MOFs), are crystalline nanostructures formed by a metal interspersed by an organic binder. These metalorganic materials are examples of nanomaterials applied to textile articles in search of new functionalized articles. Cotton is a cellulosic fiber of great commercial importance, and has good absorption capacity and good breathability, however, due to this characteristics it is susceptible to develop microorganisms on its surface. This work aims to analyze how the direct synthesis of HKUST-1 in cotton fabric, modify chemical and physical properties of the fiber. The material obtained was characterized by scanning electron microscopy in order to obtain its morphology, spectrophotometry in order to verify the color change, biological test in order to verify its resistance to microorganisms and finally unidirectional traction test to verify the change in its mechanical resistance . With that it was possible to prove the formation of MOFs with the morphology of nanorods, it was found a percentage of inhibition of 100 % in the bacteria textit Escherichia coli. The presence of MOF was verified even after washing, but the loss of 75 % in the mechanical resistance of the article unviable its potential for textile finishing.