Biomimetic Modular Polymer with Tough and Stress Sensing Properties

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	Biomimetic Modular Polymer with Tough and Stress Sensing Properties
	Fang, Xiuli ; Zhang, Huan ; Chen, Yinjun ; Lin, Yangju ; Xu, Yuanze ; Weng, Wengui ; Zhang H(张欢) ; Xu YZ(许元泽) ; Weng WG(翁文桂)
刊名	http://dx.doi.org/10.1021/ma4014862
	2013
关键词	SUPRAMOLECULAR THERMOPLASTIC ELASTOMERS ATOMIC-FORCE MICROSCOPY SINGLE-MOLECULE COVALENT BONDS END-GROUPS ACTIVATION DESIGN NANOFIBERS
英文摘要	Natural Science Foundation of China [21074103]; Fundamental Research Funds for the Central Universities [2010121018]; Scientific Research Foundation for Returned Scholars; NFFTBS [J1210014]; With the aim of designing novel polymeric materials that exhibit superb mechanical performance and at the same time can sense stress, the hydrogen bonding ureidopyrimidinone (UPy) and covalent mechanochromic spiropyran (SP) are incorporated into one polymer structure to program the mechanical and mechanochemical responses of the materials. Excellent correlation between the molecular and microscopic structures and the macroscopic properties has been successfully demonstrated. Tensile tests reveal a combination of excellent mechanical properties, that is, high strength, high elongation at break, and high toughness. The superior mechanical properties are shown to be the consequence of the successive fragmentation of the hard domains formed by stacks of UPy dimers and the dissociations of UPy diners. Stress sensing before catastrophic failure is also readily achieved in the form of color changing, which coincides with the strain hardening event. Studies show that the fragmentation and dissociation events occur before the mechanical activation of SP.
语种	英语
出版者	AMER CHEMICAL SOC
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/88934]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Fang, Xiuli,Zhang, Huan,Chen, Yinjun,et al. Biomimetic Modular Polymer with Tough and Stress Sensing Properties[J]. http://dx.doi.org/10.1021/ma4014862,2013.
APA	Fang, Xiuli.,Zhang, Huan.,Chen, Yinjun.,Lin, Yangju.,Xu, Yuanze.,...&翁文桂.(2013).Biomimetic Modular Polymer with Tough and Stress Sensing Properties.http://dx.doi.org/10.1021/ma4014862.
MLA	Fang, Xiuli,et al."Biomimetic Modular Polymer with Tough and Stress Sensing Properties".http://dx.doi.org/10.1021/ma4014862 (2013).