Textile manufacturers are demonstrating an increasing interest in the application of different types of micro or nanoparticles in order to add new properties to the fabric. For example, it is demostrated that fabrics treated with some type of silicate particles, like montmorillonite improve the wrinkle resistance of cotton fabric or improve the flame retardant effect, among other interesting properties. Usually these particles, are not a reactive agent that can react with the fibers. Because of

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... that, the resin product are necessary to make them adhere to the fiber, otherwise they will be lost during the actions of treated fabric use and maintenance such as washing, ironing, drying, etc. The resin plays an important role in treating the fuctionalization of the textile. Instead, this compound can modify its properties. In this work, flexural rigidity of treated cotton fabrics with binder and with and without montmorillonite particles were evaluated. Two different resins were studied, acrilyc and poliurethane, and 1, 2.5 and 5 g/L of this product were applied. It was appreciated that fabric treated with particles modify the flexural rigidity in less difference than when treating it only with resin, regardless of the type of binder used.