In the News...No More Scratches?

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article by Amanda Stiver

Even though shellfish are unclean and not fit to eat they are useful in developing scratchproof coatings.

Even though shellfish are unclean and not fit to eat (Leviticus 11:10), they are useful in developing scratchproof coatings. A new mixture using molecules made from chitosan, derived from the shells of crabs and other crustaceans, self-heals with exposure to ultraviolet sunlight after being scratched. The process takes about 30 minutes, a significant improvement over previous self-healing substances ("Coatings That 'Self-Heal' in Sun," News.BBC.co.uk, March 12, 2009).

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