Monday, January 3, 2011

Scientific Reality : Why does an iron have to be hot to flatten clothes ? ?

Heat weakens the chemical bonds between adjacent polymer strands in clothing fibres . The iron's weight forces them into a new shape . When the heat removed , the polymers rebond in this new position . For best results , the iron should be hot enough to disrupt the weaker cross-links without damaging the bonds within the polymer chains .

source: Knowledge Magazine (Asian Edition ) , Vol.2 , Issue 6 .


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