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Nano Research

Article Title

Strong and stiff Ag nanowire-chitosan composite films reinforced by Ag–S covalent bonds

Authors

Xiao-Feng Pan, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
Huai-Ling Gao, Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, CAS Center for Excellence in Nanoscience, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
Yang Su, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
Ya-Dong Wu, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
Xiang-Ying Wang, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
Jing-Zhe Xue, Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, CAS Center for Excellence in Nanoscience, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
Tao He, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
Yang Lu, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
Jian-Wei Liu, Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, CAS Center for Excellence in Nanoscience, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
Shu-Hong Yu, Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, CAS Center for Excellence in Nanoscience, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China

Keywords

silver nanowire, thiolated chitosan, Ag-S covalent bond, spraying, reinforcement

Abstract

ABSTRACT High-performance composites containing various kinds of nanofibers as reinforcing building blocks have recently received considerable attention, owing to their superior mechanical properties. One of the effective strategies to reinforce these composites involves strengthening interfacial interactions via covalent bonds. However, in contrast to nanosheets, covalent bonds have been rarely used in nanofiber-reinforced composites. Herein, we report the macroscale fabrication of a series of Ag nanowire (NW)-thiolated chitosan (TCS) composite films via spray induced self-assembly. The obtained films were significantly strengthened by Ag–S covalent bonds formed between the Ag NWs and the thiol groups of TCS. The tensile strength of the optimized Ag NW-TCS film was up to 3.9 and 1.5 times higher compared with that of pure TCS and Ag NW-chitosan (CS) films, respectively.

Graphical Abstract

Publisher

Tsinghua University Press

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