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• Schuh, C
• Schuh, K
• Lechmann, M
• Garnier, L
• Kraft, A
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• Schuh, K
• Lechmann, M
• Garnier, L
• Kraft, A
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• Schuh, K
• Lechmann, M
• Garnier, L
• Kraft, A

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Polymers 2010, 2(2), 71-85; doi:10.3390/polym2020071

Article

Shape-Memory Properties of Segmented Polymers Containing Aramid Hard Segments and Polycaprolactone Soft Segments

Christian Schuh, Kerstin Schuh, Maria C. Lechmann, Louis Garnier and Arno Kraft*

Chemistry, School of Engineering & Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK

* Author to whom correspondence should be addressed.

Received: 27 April 2010; in revised form: 28 May 2010 / Accepted: 28 May 2010 / Published: 8 June 2010

Download PDF Full-Text [880 KB, uploaded 8 June 2010 14:33 CEST]

Abstract: A series of segmented multiblock copolymers containing aramid hard segments and extended polycaprolactone soft segments (with an M_n of 4,200 or 8,200 g mol^–1) was prepared and tested for their shape-memory properties. Chain extenders were essential to raise the hard segment concentration so that an extended rubbery plateau could be observed. Dynamic mechanical thermal analysis provided a useful guide in identifying (i) the presence of a rubbery plateau, (ii) the flow temperature, and (iii) the temperature when samples started to deform irreversibly.

Keywords: shape-memory polymer; aramid; polycaprolactone

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