Volume 11 Issue 5
Oct.  2018
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DONG Li-dan, WEI Chang-ping, LI Zhong-tian, WANG Feng-ming. Preparation and properties of nano-chitosan composites[J]. Chinese Optics, 2018, 11(5): 773-778. doi: 10.3788/CO.20181105.0773
Citation: DONG Li-dan, WEI Chang-ping, LI Zhong-tian, WANG Feng-ming. Preparation and properties of nano-chitosan composites[J]. Chinese Optics, 2018, 11(5): 773-778. doi: 10.3788/CO.20181105.0773

Preparation and properties of nano-chitosan composites

doi: 10.3788/CO.20181105.0773
Funds:

China Association for Science and Technology "Overseas Intelligence Service Action Plan" 07064

The Education Department of Jilin Provincial "The 12th Five-year Scientific and Technological Research Project" 【2013】36

More Information
  • Corresponding author: WEI Chang-ping, E-mail:changpingwei@hotmail.com
  • Received Date: 09 Apr 2018
  • Rev Recd Date: 15 May 2018
  • Publish Date: 01 Oct 2018
  • In order to improve the water soluble and the hemostatic performance of chitosan (CS), chitosan is nano-sized and an antibacterial Ag+ and coagulation-assisted Ca2+ are introduced to prepare a nano-chitosan metal ion composite hemostatic material. Firstly, nano-chitosan (nmCS) is prepared by ion exchange method, and AgNO3 and saturated CaCl2 solution are added respectively to obtain nmCS-Ag, nmCS-Ca and nmCS-Ag-Ca composites. Then, the structure of the composite is characterized by means of FTIR, XRD and SEM. Finally, the coagulation and hemostatic properties of the complex are tested. The results show that the characteristic absorption peak of nano-chitosan sodium salt appeared at the modified chitosan IR spectrum at 1 647 cm-1 and 1 560 cm-1. The nano-chitosan composited with metal ions show the crystal characteristics of Ag+ and Ca2+ in the XRD pattern. The SEM shows that partial Ag+ precipitates in nmCS-Ag, and the composite effect of nmCS-Ca is better. The coagulation and hemostasis of nmCS-Ag-Ca is better than that of nmCS-Ag and nmCS-Ca, while the coagulation and hemostasis of nmCS-Ag and nmCS-Ca are better than that of nmCS. The test results show that the nano-chitosan metal ion composite hemostatic material has been successfully prepared.

     

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