A Thermoreversible Supramolecular Polyurethane with Excellent Healing Ability at 45 掳C

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• 作者：Antonio Feula ; Alexander Pethybridge ; Ioannis Giannakopoulos ; Xuegang Tang ; Ann Chippindale ; Clive R. Siviour ; C. Paul Buckley ; Ian W. Hamley ; Wayne Hayes
• 刊名：Macromolecules
• 出版年：2015
• 出版时间：September 8, 2015
• 年：2015
• 卷：48
• 期：17
• 页码：6132-6141
• 全文大小：548K
• ISSN：1520-5835

文摘

We report the synthesis and characterization of a healable, elastomeric shape recovery supramolecular polyurethane whose properties result from self-complementary 蟺鈥撓€ stacking and hydrogen bonding interactions plus phase separation. ESEM analysis and photographic images have revealed that this material can heal at 45 掳C in 15 min to recover the mechanical properties of the pristine material with healing efficiencies >99%. This supramolecular polyurethane is also able to recover an applied strain of 25% within 5 min of release of the load.