Polyethylene adipate (or PEA), is an aliphatic polyester formed from polyethylene glycol and adipic acid. Its CAS Number 24938-37-2 and its linear formula is [OCH2CH2OCO(CH2)4CO]n. It forms monoclinic crystals, mp 55C, and the amorphous material has a low Tg at -70C. However its practical use is mostly as a pre-polymer of polyurethane. It is often blended with other polyesters to form the soft segments. A strain of Penicillium 14-3 can degrade it. Lipases from R. arrizus, R. delemar, Achromobacter sp. and Candida cylindracea; as well as an esterase from hog liver also degraded PEA.
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