Tingimento de tecido de algodão com corantes reativos utilizando água do mar

Abstract

The textile industry is a sector completely dependent on water for its full functioning, and its productive processes have a very high water cost. In the textile chemical processing area, desizing, bleaching, dyeing and subsequent washes are mainly responsible for the large consumption of water. On the opposite side to this high consumption there is an evident water crisis worldwide. Nowadays the shortage of fresh water has already became a reality, as a consequence of pollution and climate changes in the planet. That fact has led to many problems to the textile companies, mainly for the preparation, dyeing and printing sectors. Therefore, this work focuses on an ecologically friendly alternative for cellulosic fiber dyeing processes. It aims to evaluate the use of seawater in the dyeing cotton fabrics with reactive dye in three primary colors (blue, yellow and red), comparing it with processes using distilled water. As a result it was possible to observe that seawater in the dyeing process does not detract the important characteristics of the fabrics such as tensile strength and elongation. Besides that, after optimizing the process the sea-dyed samples exhibit good uniformity and it has shown satisfactory washing and rubbing fastness properties compared to the conventional process. Thereby, it was verified that the use of marine water in textile dyeing can be a valid alternative with high application potential.