Wednesday, July 29, 2009

ironing




Have you noticed that what happen when you are ironing your clothes ?
I did not know that until I search it on Internet and I found that Ironing depends on the chemical reaction which will happen during it.First want to tell you about history of ironing and then define ironing and explain how our clothes will be straight:
Ironing or smoothing is the work of using a heated tool to remove crease from washed clothes . The common tools for this purpose are called "irons".
Ironing works by loosening the bonds between the long-chain polymer molecule in the fibres of the material. While the molecules are hot, the fibres are straightened by the weight of the iron, and they hold their new shape as they cool. Some fabrics, such as cotton, require the addition of water to loosen the intermolecular bonds.

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