Ternary Supramolecular Ensembles of Cellulose Nanocrystals Exhibiting Multiscale Deformation and Mechano/Chemoresponsive Selective Reflection of Circularly Polarized Light
Ternary Supramolecular Ensembles of Cellulose Nanocrystals Exhibiting Multiscale Deformation and Mechano/Chemoresponsive Selective Reflection of Circularly Polarized Light
复制标题
纤维素纳米晶体的三元超分子整体表现出多尺度变形和圆偏振光的机械/化学响应选择性反射
DOI：
10.1021/acssuschemeng.8b06230
复制
发表时间：
2019-03
期刊：
影响因子：
--
通讯作者：
Yan Xu
中科院分区：
文献类型：
--
作者：
Yuyuan Su;Wei Fun;Chen Zou;Lihong Wei;Jiaqi Liu;Yan Xu
强韧结构材料是一个具有挑战性的材料工程问题，已引起材料界的广泛关注。本研究表明，纤维素纳米晶体-聚乙烯醇-葡萄糖三元超分子体系通过蒸发诱导的集体组装实现了刚度和韧性的同时增强，断裂功为1.1 MJ·m-3时杨氏模量为13 GPa。组分的改变使三元系的杨氏模量和韧性分别达到14.7 GPa和12.1 MJ·m-3。同时增强的刚度和韧性是由于涉及弱相互作用和螺旋形组织的多尺度变形，导致更有效的能量耗散。在机械和化学刺激下，三元系综的独立透明膜表现出左旋圆偏振光的动态选择性反射。机制的结合……
Strong and tough structural materials are a challenging materials engineering problem that has drawn considerable attention among the materials community. Here we demonstrate that ternary supramolecular ensembles of cellulose nanocrystals-polyvinyl alcohol-glucose by evaporation-induced corporative assembly achieved simultaneous enhancement on the stiffness and toughness with the Young’s modulus of 13 GPa at the work-of-fracture of 1.1 MJ·m–3. Compositional alteration led to stiff and tough ternary ensembles with the Young’s modulus up to 14.7 GPa and the toughness up to 12.1 MJ·m–3, respectively. Concurrent enhancement in the stiffness and toughness was owing to the multiscale deformation involving weak interactions and helicoidal organization, leading to more efficient energy dissipation. The freestanding transparent films of the ternary ensembles exhibited dynamic selective reflection of left-handed circularly polarized light in response to mechanical and chemical stimuli. The combination of the mechan...
登录
查看更多内容
影响因子：
9.5
作者：
Bardet, Raphael;Belgacem, Naceur;Bras, Julien
通讯作者：
Bras, Julien
影响因子：
9.5
作者：
Baolei Zhu;Rémi Mérindol;A. Benítez;Baochun Wang;A. Walther
通讯作者：
Baolei Zhu;Rémi Mérindol;A. Benítez;Baochun Wang;A. Walther
影响因子：
41.2
作者：
Koester, K. J.;Ager, J. W., III;Ritchie, R. O.
通讯作者：
Ritchie, R. O.
影响因子：
6.2
作者：
Sturcová, A;Davies, GR;Eichhorn, SJ
通讯作者：
Eichhorn, SJ
影响因子：
41.2
作者：
Peterlik, H;Roschger, P;Fratzl, P
通讯作者：
Fratzl, P