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Fluorescent Tracing Abilities and Mechanical Properties of Au NCs/HA/PVA Composite Hydrogel |
LIAO Jingwen, RAO Chunxing, WANG Yanqin( ), CHEN Weiyi |
College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China |
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Cite this article:
LIAO Jingwen, RAO Chunxing, WANG Yanqin, CHEN Weiyi. Fluorescent Tracing Abilities and Mechanical Properties of Au NCs/HA/PVA Composite Hydrogel. Chinese Journal of Materials Research, 2022, 36(2): 107-113.
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Abstract Composite hydrogel of Au NCs/HA/PVA with double network was prepared by means of chemical crosslinking and cyclic freezing-thawing with polyvinyl alcohol (PVA) as raw material, gold nanocluster (Au NCs) and hydroxyapatite (HA) as dopants, and glutaraldehyde as crosslinking agent. The effect of Au NCs content and the number of freezing-thawing cyclics on the physical properties of Au NCs/HA/PVA composite hydrogels was investigated. The results show that the mechanical strength of the gels increased with the increasing number of the freezing-thawing cycles. When the Au NCs content is 2.6% and the number of the freezing-thawing cyclic is 9, the gel has the optimized mechanical properties. The elastic modulus, breaking strength and fracture energy of the gel are 63.09 kPa, 152.84 kPa and 130.36 kJ·m-3, respectively. The moisture content is about 80%, which is similar to the human cartilage tissue, and shows remarkable fluorescence properties.
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Received: 23 November 2020
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Fund: National Natural Science Foundation of China(12172243);Natural Science Foundation of Shanxi Province(20210302123158) |
About author: WANG Yanqin, Tel: (0351)3176655, E-mail: wangyanqin@tyut.edu.cn
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