Chem. J. Chinese Universities ›› 2019, Vol. 40 ›› Issue (8): 1726.doi: 10.7503/cjcu20190120

• Polymer Chemistry • Previous Articles     Next Articles

Preparation and Properties of Polypyrrole Modified Layered Clay/poly(ε-caprolactone) Antibacterial Nanocomposites

MAO Long1,2, LIU Yuejun1,2, FAN Shuhong2   

  1. 1. Fujian Provincial Key Laboratory of Functional Materials and Applications, Xiamen University of Technology, Xiamen 361024, China;
    2. Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007, China
  • Received:2019-02-25 Revised:2019-06-23 Online:2019-08-10 Published:2019-07-12
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.11872179), the Science and Technology Planning Project of Fujian Province, China(No.2018H6024), the Natural Science Foundation of Hunan Province, China(No.2019JJ50132), the Open Fund for Innovation Platform of Universitiy in Hunan Province, China(No.18K079) and the Open Fund of Fujian Provincial Key Laboratory of Functional Materials and Applications(Xiamen University of Technology), China(Nos.fma2018004, fma2017110).

Abstract: Polypyrrole-coated layered double hydroxides(LDHs@PPy) was prepared by the chemical oxidation polymerization of pyrrole(Py) on the surface of LDHs induced by Fe3+. And LDHs@PPy/poly(ε-caprolactone)(PCL) nanocomposites were prepared by blending LDHs@PPy and pure PCL via solution casting method to obtain homogeneous films. The results showed that LDHs@PPy was prepared with an antibacterial rate of 99.7%(for Escherichia coli and Staphylococcus aureus). It had a good interface compatibility with the PCL matrix and played a role of heterogeneous nucleation in the PCL matrix. When the mass fraction of LDHs@PPy was only 1%, the tensile strength and elongation at break of nanocomposites increased by 35% and 23%, respectively. And the oxygen permeability also decreased by 56%. It was worth mentioning that the antibacterial rate of the nanocomposites was over 99.99%(for Escherichia coli and Staphylococcus aureus), which showed good antibacterial activity. The work promotes the application of layered clay/biopolymer nanocomposites in the field of active packaging.

Key words: Layered clay, Surface modification, Nanocomposites, Barrier property, Antibacterial activity, Layered double hydroxides, Polypyrrol, Poly(ε-eaprolactone)

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