Composite Films with Ordered Carbon Nanotubes and Cellulose Nanocrystals | |
Sun, Jinhuan1; Zhang, Caihong1; Yuan, Zaiwu1; Ji, Xingxiang1; Fu, Yingjuan1; Li HG(李洪光)2; Qin, Menghua3 | |
刊名 | Journal of Physical Chemistry C |
2017 | |
卷号 | 121期号:16页码:8976-8981 |
ISSN号 | 1932-7447 |
通讯作者 | Yuan, Zaiwu ; 李洪光 |
英文摘要 | Composite films with oxidized carbon nanotubes (o-CNTs) incorporated in the chiral nematic liquid crystals (CNLCs) formed by cellulose nanocrystals (CNCs) were fabricated for the first time. Induced by solvent evaporation, the isotropic aqueous dispersion containing o-CNTs and CNCs gradually forms lyotropic CNLCs, and the framework of the CNLCs can be retained in the final solid films, confirmed by polarized optical microscopy observations and scanning electron microscopy observations. During this evaporation-induced self-assembly process, the predispersed o-CNTs were spontaneously integrated in the liquid crystal matrix. It is found that the incorporation of a trace amount of o-CNTs (∼1.5 wt %) can induce obvious structural changes of the films. The reflection spectrum shifts to higher wavelengths with increasing content of o-CNTs, resulting in a continuous increase of the helical pitch of the CNLC phase. Confined in the liquid crystal matrix, the randomly oriented o-CNTs in the aqueous dispersion are forced to adopt a higher degree of order. This ordered arrangement of o-CNTs combined with the intrinsic anisotropy of the CNLCs impart the composite film anisotropic conductivity as proved by the electrical resistance measurements. This new type of CNTs/CNCs composites could find applications in various fields such as sensors and photoelectronics. |
学科主题 | 材料科学与物理化学 |
收录类别 | SCI |
资助信息 | the National Natural Science Foundation of China (No. 31570570;No. 31370581;No. 61474124) |
语种 | 英语 |
WOS记录号 | WOS:000400534100036 |
内容类型 | 期刊论文 |
源URL | [http://210.77.64.217/handle/362003/22165] |
专题 | 兰州化学物理研究所_清洁能源化学与材料实验室 兰州化学物理研究所_固体润滑国家重点实验室 |
作者单位 | 1.Key Laboratory of Fine Chemicals in Universities of Shandong, Qilu University of Technology, Jinan 250353, China 2.State Key Laboratory of Solid Lubrication & Laboratory of Clean Energy Chemistry and Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China 3.Laboratory of Organic Chemistry, Taishan University, Taian 271021, China |
推荐引用方式 GB/T 7714 | Sun, Jinhuan,Zhang, Caihong,Yuan, Zaiwu,et al. Composite Films with Ordered Carbon Nanotubes and Cellulose Nanocrystals[J]. Journal of Physical Chemistry C,2017,121(16):8976-8981. |
APA | Sun, Jinhuan.,Zhang, Caihong.,Yuan, Zaiwu.,Ji, Xingxiang.,Fu, Yingjuan.,...&Qin, Menghua.(2017).Composite Films with Ordered Carbon Nanotubes and Cellulose Nanocrystals.Journal of Physical Chemistry C,121(16),8976-8981. |
MLA | Sun, Jinhuan,et al."Composite Films with Ordered Carbon Nanotubes and Cellulose Nanocrystals".Journal of Physical Chemistry C 121.16(2017):8976-8981. |
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