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photodegradation |
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photodegradation [¦fōd·ō‚deg·rə′dā·shən] (organic chemistry) Chemical changes resulting from the absorption of light that reduce the useful properties of materials, particularly polymers. The chemical changes can include bond scission (especially of the molecular backbone), color formation, crosslinking, and chemical rearrangements. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Some manufacturers say their products are photodegradable, which means that they will biodegrade when exposed to sunlight. Willow Ridge also supplies a photodegradable masterbatch designated UV-H that accelerates uv degradation by creating free radicals that sever the polymer chains into smaller fragments that can be consumed by microbes. Most supermarkets today use a plastic that is at least partly degradable - either photodegradable or biodegradable. |
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