Chinese Journal of Applied Chemistry ›› 2015, Vol. 32 ›› Issue (5): 498-503.DOI: 10.11944/j.issn.1000-0518.2015.05.140307

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Preparation and Performance of Chitosan Grafted Polyvinyl Pyrrolidone Film with Iodine

GUO Rui, SAI Mingze, ZHANG Min, ZHONG Shiliang, MA Wentao, CHEN Lei, DING Derun*   

  1. College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
  • Received:2014-09-03 Revised:2014-11-14 Accepted:2014-12-17 Published:2015-05-05 Online:2015-05-05
  • Contact: DING Derun
  • Supported by:
    Supported by National Natural Science Foundation of China(No.21305086), the National Undergraduate Innovative Training Program(No.201310856012)

Abstract:

The CTS-PVP film with iodine was prepared by chitosan(CTS) grafted polyvinyl pyrrolidone(PVP) in the protection of N2 with dimethyl 2, 2'-azobis(2-methylpropionate)(AIBME) as initiator followed by addition of a certain amounts of iodine in ethanol solution and a gelatin solution. The properties of the film were characterized by infrared(IR), scan electron microscopy(SEM), UV-visible spectroscopy(UV-Vis), differential scanning calorimetry(DSC), etc. The UV-Vis spectrum shows a strong absorption between 200~600 nm for the CTS-PVP film with iodine. The glass transition temperature at 319 ℃ indicates a good thermal stability. The antimicrobial test result shows that the inhibition zone diameters increase along with the increasing amounts of CTS-PVP-I2 complex liquid. The inhibition zone diameters against Staphylococcus aureus and Escherichia coli are in the range of 16~36 mm, when the added volume of CTS-PVP-I2 complex fluid is 10 mL or more, implying its high sensitivity and good antibacterial properties.

 

Key words: chitosan, iodine, film, antibacterial properties, functional materials

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