A self-cleaning cotton fabric known as nano-care was developed and is marketed by an American Company, Nanotex and stain-resistant jeans and khakis are available since 1990. Nanocare fabrics are created by modifying the cylindrical structure of the cotton fibres making up the fabric. At the nano scale, cotton fibres look like tree trunks. Using nano techniques, these tree trunks are covered in a fuzz of minute whiskers which creates a cushion of air around the fiber. When water hits the fabric, it beads on the points of the whiskers, the beads compress the air in the cavities between the whiskers creating extra buoyancy. In technical terms, the fabric has been rendered super-non wett able or super-hydrophobic. The whiskers also create fewer points of contact for dirt. When water is applied to soiled fabric, the dirt adheres to the water far better than it adheres to the textile surface and is carried off with the water as it beads up and rolls off the surface of the fabric. Thus the concept of Soil-cleaning is based on the leaves of the lotus plant.
Static charge usually builds up in synthetic fibers such as nylon and polyester because they absorb little water. Cellulosic fibers have higher moisture content to carry away static charges, so that no static charge will accumulate. As synthetic fibers provide poor anti-static properties, research work concerning the improvement of the anti-static properties of textiles by using nanotechnology were conducted. It was determined that nano-sized titanium dioxide, zinc oxide whiskers, nano antimony-doped tin oxide (ATO) and silane nano sol could impart anti-static properties to synthetic fibers. TiO2, ZnO and ATO provide anti-static effects because they are electrically conductive materials. Such material helps to effectively dissipate the static charge which is accumulated on the fabric. On the other hand, silane nano sol improves anti-static properties, as the silane gel particles on fiber absorb water and moisture in the air by amino and hydroxyl groups and bound water.
Nano Technology for Wrinkle Free Treatment:
Nano-Tex has launched a new nanotechnology-based wrinkle-free treatment that is said to offer an improved performance while preserving fabric strength and integrity providing an alternative to harsh traditional processes. Chemicals and processing methods reduce a fabrics tear and tensile strength. This means there are certain fabrics and garments that are Wrinkle-free textiles are popular and convenient for time-pressed consumers, but traditional not candidates for wrinkle-free technology, such as lightweight fabrics or slim fitting garments. Sometimes fabrics also need to be over-engineered or beefed up in order to withstand the fiber degradation caused by traditional wrinkle-free solutions. Either way, current technologies either do not work on all fabrics or the brand/retailer has to incur additional expense just to accommodate the destructive properties of wrinkle-free chemistry.