Multiresponsive Shape Memory Blends and Nanocomposites Based on Starch

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• 作者：Valentina Sessini ; Jean-Marie Raquez ; Giada Lo Re ; Rosica Mincheva ; José Maria Kenny ; Philippe Dubois ; Laura Peponi
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：August 3, 2016
• 年：2016
• 卷：8
• 期：30
• 页码：19197-19201
• 全文大小：380K
• 年卷期：0
• ISSN：1944-8252

文摘

Smart multiresponsive bionanocomposites with both humidity- and thermally activated shape-memory effects, based on blends of ethylene-vinyl acetate (EVA) and thermoplastic starch (TPS) are designed. Thermo- and humidity-mechanical cyclic experiments are performed in order to demonstrate the humidity- as well as thermally activated shape memory properties of the starch-based materials. In particular, the induced-crystallization is used in order to thermally activate the EVA shape memory response. The shape memory results of both blends and their nanocomposites reflect the excellent ability to both humidity- and thermally activated recover of the initial shape with values higher than 80 and 90%, respectively.