形状记忆合金
材料科学
形状记忆聚合物
分子动力学
执行机构
聚氨酯
聚己内酯
热塑性聚氨酯
智能材料
热塑性塑料
领域(数学分析)
复合材料
聚合物
化学
计算机科学
弹性体
计算化学
人工智能
数学分析
数学
作者
Arpan Biswas,Vinod K. Aswal,P. U. Sastry,Dipak Rana,Pralay Maiti
出处
期刊:Macromolecules
[American Chemical Society]
日期:2016-06-30
卷期号:49 (13): 4889-4897
被引量:70
标识
DOI:10.1021/acs.macromol.6b00536
摘要
Reversible bidirectional shape memory is developed in thermoplastic polyurethane by designing different components to enable molecular switching from actuator domain to self-assembled rigid hard domain and vice versa under a temperature cycle. Polycaprolactone based special polyurethanes have been synthesized which exhibit appropriate self-assembly behavior suitable for the shape memory effect. Reversible bidirectional shape memory has been reported through induced strain and giving shape at particular temperature, and the results are compared with conventional polyurethanes which do not show any shape memory effect. The correlation between chemical structures, self-assembly, structural evolution, and shape memory effect has been made. Self-gripping is demonstrated revealing the novel mechanism of molecular flipping and temperature-induced structural change along with molecular aggregation.
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