高等学校化学学报

高等学校化学学报 ›› 2019, Vol. 40 ›› Issue (8): 1726.doi: 10.7503/cjcu20190120

• 高分子化学 • 上一篇    下一篇

聚吡咯改性层状黏土/聚己内酯抗菌纳米复合材料的制备与性能

毛龙1,2, 刘跃军1,2, 范淑红2   

  1. 1. 厦门理工学院, 福建省功能材料及应用重点实验室, 厦门 361024;
    2. 湖南工业大学, 先进包装材料与技术湖南省重点实验室, 株洲 412007
  • 收稿日期:2019-02-25 修回日期:2019-06-23 出版日期:2019-08-10 发布日期:2019-07-12
  • 通讯作者: 刘跃军,男,博士,教授,主要从事先进包装材料与技术研究.E-mail:yjliu_2005@126.com E-mail:yjliu_2005@126.com
  • 基金资助:
    国家自然科学基金（批准号：11872179）、福建省科技计划项目（批准号：2018H6024）、湖南省自然科学基金（批准号：2019JJ50132）、湖南省高校创新平台开放基金（批准号：18K079）和福建省功能材料及应用重点实验室开放课题（厦门理工学院）（批准号：fma2018004，fma2017110）资助.

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).

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摘要： 利用Fe3+引发吡咯（Py）在层状双羟基金属氧化物（LDHs）表面发生氧化反应，形成聚吡咯（PPy）包覆LDHs（LDHs@PPy）；以LDHs@PPy和聚己内酯（PCL）为原料，采用溶液浇筑方法制备LDHs@PPy/PCL纳米复合薄膜.研究结果表明，LDHs@PPy对大肠杆菌和金黄色葡萄球菌的抗菌率均达到99.7%，其与基材PCL界面相容性良好，而且在基材中还具有异相成核作用.当LDHs@PPy的质量分数仅为1%时，LDHs@PPy/PCL纳米复合材料的拉伸强度和断裂伸长率分别增加35%和23%，氧气渗透性降低幅度达到56%，对大肠杆菌和金黄色葡萄球菌的抗菌率均超过99.99%，表现出良好的抗菌活性，拓展了层状黏土/生物基高分子复合材料在活性包装领域的应用.

关键词: 层状黏土, 表面改性, 纳米复合材料, 阻隔性能, 抗菌活性, 层状双羟基金属氧化物, 聚吡咯, 聚己内酯

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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