Financial support from the “Ministero dell'Istruzione, dell'Università e della Ricerca” of Italy (PRIN 2004 and Cluster C26 projects) are gratefully acknowledged.
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Communication
From Entropic to Enthalpic Elasticity: Novel Thermoplastic Elastomers from Syndiotactic Propylene–Ethylene Copolymers†
Article first published online: 7 JUN 2005
DOI: 10.1002/adma.200401968
Copyright © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
De Rosa, C. and Auriemma, F. (2005), From Entropic to Enthalpic Elasticity: Novel Thermoplastic Elastomers from Syndiotactic Propylene–Ethylene Copolymers. Adv. Mater., 17: 1503–1507. doi: 10.1002/adma.200401968
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Publication History
- Issue published online: 7 JUN 2005
- Article first published online: 7 JUN 2005
- Manuscript Accepted: 15 MAR 2005
- Manuscript Received: 2 DEC 2004
- Abstract
- References
- Cited By
Keywords:
- Copolymers, random;
- Elastomers;
- Thermoresponsive materials
Syndiotactic propylene–ethylene copolymers show entropic or enthalpic elasticity depending on ethylene concentration (see Figure). Enthalpic elasticity is due to a reversible transition between transplanar and helical polymorphic forms during stretching, and allows maintenance of elasticity even for highly crystalline materials.