Using a cheap and easily available natural mineral, scientists from Central Sheep and Wool Research Institute (ICAR-CSWRI), Rajasthan have now moth-proofed woollen fabric. The moths did not consume the woollen fabric when treated with 1% nano kaolinite (an aluminium silicate clay mineral). The mineral costs just Rs 95/ kg while the existing anti-moth chemical (Eulan), which is imported, costs Rs 2,000/kg. The results were published in The Journal of the Textile Institute.
A moth feeds on a protein present in the woollen fabric; a moth larva can consume about 40 mg of wool in a month. The researchers treated wool with different concentrations of nano-kaolinite solution and found just 1% was sufficient to protect the fabric.
They adopted two different methods of wool treatments. One method was addition of kaolinite (dispersed in water) to fabric, followed by heating at 80 degree C for 30 minutes before water rinsing it. In the second method, fabric was dipped in the kaolinite dispersion for 30 minutes, squeezed and kept for 24 hours at room temperature and then water rinsed.....Read more
Source web page:The Hindu