An antibacterial material containing polylactic acid(PLA)-based organically modified bentonite (O-MMT-P(2,3-DMA) adsorbed with metal ions was prepared by electrospinning method under emulsion polymerization condition.The three kinds of antibacterial materials were Ag+/O-MMT-P(2,3-DMA) load PLA,Ni2+/O-MMT-P(2,3-DMA) load PLA,Ag+/Ni2+/O-MMT-P(2,3-DMA) Load PLA respectively.The structure and composition of the materials were characterized by X-ray diffraction (XRD),infrared spectroscopy (FT-IR),thermogravimetry (TG) and scanning electron microscopy (SEM).The results shown that:O-MMT-P(2,3-DMA) was successfully synthesized by emulsion polymerization.The modified organic matter was inserted between the layers of bentonite,and the polymerization reaction was not changed the chemical composition and interlayer structure of the organic modified bentonite.The optimal amount of filler was 0.5%.The antibacterial rate of Ag+/Ni2+/O-MMT-P(2,3-DMA) loaded PLA against Escherichia coli and Staphylococcus aureus reached 92.9% and 92.2%,the antibacterial rate of Ni2+/O-MMT-P (2,3-DMA) loaded PLA on E.coli and Staphylococcus aureus was 21.9% and 23.6%,the antibacterial rate of Ag+/O-MMT-P(2,3-DMA) loaded PLA on E.coli and Staphylococcus aureus reached 77.7% and 73.7% respectively.
Gou Xiaobin, Peng Longgui, Zhu Jianghua, Cheng Huanquan, Zhang Xin
. Synthesis and characterization of PLA-based antibacterial material[J]. New Chemical Materials, 2021
, 49(5)
: 217
-221
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.05.049
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