The oldest known textiles are some sail pieces, made 7,000 years ago. The first textile fibers used by humans were flax and wool, but today a large array of natural and synthetic fibers are employed. The sheep wool is made of keratin, the same protein found in the nails, horns, feathers, reptilian scales and the uppe... |
21 January 2008
06:51 GMT |
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The hair fiber has in its composition keratin and some derived proteins. The protein has a fibrous structure, which also enters in the composition of feathers, nails, hoofs, and horns. Of all the hair growing on the human body, the beard has the toughest and most resistant fibers, being as hard to cut off like copper... |
5 November 2007
14:06 GMT |
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The problem of the plastic contamination could be solved by biodegradable polymers made of poultry feathers, a solution that would also decrease costs in poultry industry. Only in the US over 29 million tons of non-biodegradable plastic waste reach the landfills yearly. "12 % of all plastic packaging ends up in landf... |
30 March 2007
07:10 GMT |
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