Recyclable Diels鈥揂lder Furan/Maleimide Polymer Networks with Shape Memory Effect

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• 作者：Mengjin Fan ; Jialin Liu ; Xiangyuan Li ; Junying Zhang ; Jue Cheng
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：October 22, 2014
• 年：2014
• 卷：53
• 期：42
• 页码：16156-16163
• 全文大小：463K
• ISSN：1520-5045

文摘

A series of recyclable networks with shape memory effect was prepared by the Diels鈥揂lder reaction between furan-functionalized poly(hydroxyaminoethers) (PHAEs) and 1,5-bis(maleimido)-2-methylpentane (MPDBMI). Compression molding was used to recycle the MPDBMI/PHAE films. The Diels鈥揂lder and retro-Diels鈥揂lder reactions between PHAEs and MPDBMI were confirmed by Fourier transform infrared, differential scanning calorimetry (DSC), and solubility test. Furthermore, the mechanical properties and shape memory properties of the original and recycled MPDBMI/PHAE networks were systematically investigated by a tensile test and a quantitative shape memory evaluation method, respectively. DSC measurement indicated that the retro-Diels鈥揂lder reaction will occur upon heating, and the solubility test showed that the recycled MPDBMI/PHAE films may still be considered as recyclable. Moreover, the tensile test at room temperature disclosed that both the original and recycled MPDBMI/PHAE networks exhibited tough properties: all specimens exhibited either the ductile plastic fracture feature with the appearance of yielding phenomenon or the rubber property with large elongation at break. Quantitative shape memory evaluation revealed excellent shape memory performance of the original and recycled MPDBMI/PHAE networks.